Doepfer

Hey all,

My Doepfer A-199 spring module has suddenly started distorting. I've
only had it two weeks, and I just got a lovely Accutronics 4 spring tray
for it that sounds amazing. Then today, it sounded different, like the
reverb signal was going through a fuzz pedal - so I backed the level
off, and it kept happening, so I hooked up the original Belton tray, and
the problem persisted. The dry signal going to it is fine, and turning
the mix control fully left gives a normal dry signal. All I could think
was that I had tugged the RCA cable inside the case and something had
come loose - but everything looks fine.

Does anyone have any suggestions? I'm gutted, I finally get the spring
sound of my dreams, and now its gone again... :help:

Any help gratefully received. I'll post this on the Doefper forum too,
just in case.

Cheers,
TJ



[Non-text portions of this message have been removed]

Does yours distort without the tank being in or anywhere near the
case? This doen't sound like interference, it sounds like a module
problem. But I could be wrong.


--- In Doepfer_a100@yahoogroups.com, Jonas Asher <asher.jonas@...> wrote:
>
> this same thing happened to me, people suggested MU Metal, i tried
it, and
> its still not working right.......blah
> 
> On Mon, Jan 19, 2009 at 6:11 PM, aesoteric@...
> <aesoteric@...>wrote:
> 
> >   Hey all,
> >
> > My Doepfer A-199 spring module has suddenly started distorting. I've
> > only had it two weeks, and I just got a lovely Accutronics 4
spring tray
> > for it that sounds amazing. Then today, it sounded different, like the
> > reverb signal was going through a fuzz pedal - so I backed the level
> > off, and it kept happening, so I hooked up the original Belton
tray, and
> > the problem persisted. The dry signal going to it is fine, and turning
> > the mix control fully left gives a normal dry signal. All I could
think

> > was that I had tugged the RCA cable inside the case and something had
> > come loose - but everything looks fine.
> >
> > Does anyone have any suggestions? I'm gutted, I finally get the spring
> > sound of my dreams, and now its gone again... :help:
> >
> > Any help gratefully received. I'll post this on the Doefper forum too,
> > just in case.
> >
> > Cheers,
> > TJ
> >
> > [Non-text portions of this message have been removed]
> >
> >  
> >
> 
> 
> 
> -- 
> --------------------------------------/
> www.phaserprone.com
> 
> 
> [Non-text portions of this message have been removed]
>

this same thing happened to me, people suggested MU Metal, i tried it, and
its still not working right.......blah

On Mon, Jan 19, 2009 at 6:11 PM, aesoteric@talk21.com
<aesoteric@talk21.com>wrote:

>   Hey all,
>
> My Doepfer A-199 spring module has suddenly started distorting. I've
> only had it two weeks, and I just got a lovely Accutronics 4 spring tray
> for it that sounds amazing. Then today, it sounded different, like the
> reverb signal was going through a fuzz pedal - so I backed the level
> off, and it kept happening, so I hooked up the original Belton tray, and
> the problem persisted. The dry signal going to it is fine, and turning
> the mix control fully left gives a normal dry signal. All I could think
> was that I had tugged the RCA cable inside the case and something had
> come loose - but everything looks fine.
>
> Does anyone have any suggestions? I'm gutted, I finally get the spring
> sound of my dreams, and now its gone again... :help:
>
> Any help gratefully received. I'll post this on the Doefper forum too,
> just in case.
>
> Cheers,
> TJ
>
> [Non-text portions of this message have been removed]
>
>  
>



-- 
--------------------------------------/
www.phaserprone.com


[Non-text portions of this message have been removed]

> Hey all,
>
> My Doepfer A-199 spring module has suddenly started distorting. I've
> only had it two weeks, and I just got a lovely Accutronics 4 spring tray
> for it that sounds amazing. Then today, it sounded different, like the
> reverb signal was going through a fuzz pedal - so I backed the level
> off, and it kept happening, so I hooked up the original Belton tray, and
> the problem persisted. The dry signal going to it is fine, and turning
> the mix control fully left gives a normal dry signal. All I could think
> was that I had tugged the RCA cable inside the case and something had
> come loose - but everything looks fine.
>
> Does anyone have any suggestions? I'm gutted, I finally get the spring
> sound of my dreams, and now its gone again... :help:
>
> Any help gratefully received. I'll post this on the Doefper forum too,
> just in case.
>
> Cheers,
> TJ

The power amplifier of the A-199 that drives the reverb unit has no short
circuit protection as one assumes that it is internally connected. If you
made a short circuit with one of the RCA connectors to GND (e.g. case or
mounting rails) while the module was powered probably the power amplifier of
the module became defective and the LM386 amplifier circuit has to be
replaced. But that's only a guess (diagnosis from the distance is generally
uncertain). Please check also the bus connection of the module.

Best wishes
Dieter Doepfer

Thanks for getting back to me so quickly Dieter. 

That sounds the most likely thing to have happened, although I'm
always careful to turn the power off before connecting/disconnecting
the tanks. Is the replacement of the LM386 amp circuit just a matter
of swapping out the op-amp IC? Is it worth trying to see if that
solves the problem? Or is it a more complex operation? I just don't
want to be parted from the reverb for too long, as I'm based in the
UK, and sending to and from Germany takes time!

I'm guessing if I did short the RCA to ground, this isn't something
that would be covered by the warranty? 

Many thanks,

TJ




--- In Doepfer_a100@yahoogroups.com, <yahoo@...> wrote:

> The power amplifier of the A-199 that drives the reverb unit has no
short
> circuit protection as one assumes that it is internally connected.
If you
> made a short circuit with one of the RCA connectors to GND (e.g. case or
> mounting rails) while the module was powered probably the power
amplifier of
> the module became defective and the LM386 amplifier circuit has to be
> replaced. But that's only a guess (diagnosis from the distance is
generally

> uncertain). Please check also the bus connection of the module.
> 
> Best wishes
> Dieter Doepfer
>

> Thanks for getting back to me so quickly Dieter.
>
> That sounds the most likely thing to have happened, although I'm
> always careful to turn the power off before connecting/disconnecting
> the tanks. Is the replacement of the LM386 amp circuit just a matter
> of swapping out the op-amp IC? Is it worth trying to see if that
> solves the problem? Or is it a more complex operation? I just don't
> want to be parted from the reverb for too long, as I'm based in the
> UK, and sending to and from Germany takes time!
>
> I'm guessing if I did short the RCA to ground, this isn't something
> that would be covered by the warranty?
>
> Many thanks,
>
> TJ

It's very easy to replace the LM386 as it is inserted into a socket. The
LM386 is also cheap (< Euro 1) and a standard electronic part. In Germany
it's available from all electronic online shops (e.g. Conrad, Reichelt). I
don't about the situation in UK but I assume it's similar. First of all I'd
replace the LM386. To be on the safe side I'd also replace the TL084 which
also a cheap circuit (< Euro 1). If this does not help please send the
module to the dealer where you purchased it for repair. If you have problems
to get the LM386 and TL084 we can send you the circuits (the shipping
charges will be much more than the value of the parts).

Best wishes
Dieter Doepfer

--- In Doepfer_a100@yahoogroups.com, <yahoo@...> wrote:
Hi Dieter, 

I've just replaced both the LM386 and the TL084, and the problem is
still there, so perhaps I didn't short it to ground after all.

I'll contact Thomann and get it sent back to them.

Thanks for you help.

TJ

> It's very easy to replace the LM386 as it is inserted into a socket. The
> LM386 is also cheap (< Euro 1) and a standard electronic part. In
Germany
> it's available from all electronic online shops (e.g. Conrad,
Reichelt). I
> don't about the situation in UK but I assume it's similar. First of
all I'd
> replace the LM386. To be on the safe side I'd also replace the TL084
which
> also a cheap circuit (< Euro 1). If this does not help please send the
> module to the dealer where you purchased it for repair. If you have
problems

> to get the LM386 and TL084 we can send you the circuits (the shipping
> charges will be much more than the value of the parts).
> 
> Best wishes
> Dieter Doepfer
>

> Hi Dieter,
>
> I've just replaced both the LM386 and the TL084, and the problem is
> still there, so perhaps I didn't short it to ground after all.
>
> I'll contact Thomann and get it sent back to them.
>
> Thanks for you help.
>
> TJ

I cannot imagine a fault that causes distortion and that is not caused by
the two integrated circuits. These are the only active parts in the module.
Anyway - we will see what is wrong if the module comes back to us for
service. Maybe the 1000u AC coupling capacitor in the amplifier output is
defective. In any case the repair is covered by warranty.

Best wishes
Dieter Doepfer

Hi Dieter

> I cannot imagine a fault that causes distortion and that is not caused by
> the two integrated circuits. These are the only active parts in the module.
> Anyway - we will see what is wrong if the module comes back to us for
> service. Maybe the 1000u AC coupling capacitor in the amplifier output is
> defective. In any case the repair is covered by warranty.
I know funny distortions from opamps driven by an asymetric power 
supply: Maybe a broken wire in the power ribbon cable, or cold/broken 
solder joint at the bus connector of the module. Both could be caused by 
the frequent removing of the module.

Florian

> Hi Dieter
>
> > I cannot imagine a fault that causes distortion and that is not
> caused by
> > the two integrated circuits. These are the only active parts in
> the module.
> > Anyway - we will see what is wrong if the module comes back to us for
> > service. Maybe the 1000u AC coupling capacitor in the amplifier
> output is
> > defective. In any case the repair is covered by warranty.
> I know funny distortions from opamps driven by an asymetric power
> supply: Maybe a broken wire in the power ribbon cable, or cold/broken
> solder joint at the bus connector of the module. Both could be caused by
> the frequent removing of the module.
>
> Florian

You are right. An asymmetric power supply could cause this behaviour. TJ:
please double check if the other modules on the same bus are OK (an
assymetric supply caused by the power supply would affect other modules too)
and if the two LEDs for +12V and -12V on the bus board light up. If that's
OK please use another bus connection cable to find out if the cable causes
the problem. And have an eye for the bus pin header of the A-199 module.
Maybe one of the pins is broken or the solder on the bottom side is not OK.
And try also another connector of the bus board (maybe the pin header of the
bus board causes the problems).

Good luck
Dieter Doepfer

I tried a different ribbon cable, a different bus connection point,
tried the lower bus strip in the case, and checked the ribbon and the
bus connector on the module and cannot see any obvious faults. Both
the +12 and -12 led's are on in the case.

I'm stumped.

TJ


--- In Doepfer_a100@yahoogroups.com, <yahoo@...> wrote:
>
> > Hi Dieter
> >
> > > I cannot imagine a fault that causes distortion and that is not
> > caused by
> > > the two integrated circuits. These are the only active parts in
> > the module.
> > > Anyway - we will see what is wrong if the module comes back to
us for
> > > service. Maybe the 1000u AC coupling capacitor in the amplifier
> > output is
> > > defective. In any case the repair is covered by warranty.
> > I know funny distortions from opamps driven by an asymetric power
> > supply: Maybe a broken wire in the power ribbon cable, or cold/broken
> > solder joint at the bus connector of the module. Both could be
caused by
> > the frequent removing of the module.
> >
> > Florian
> 
> You are right. An asymmetric power supply could cause this
behaviour. TJ:
> please double check if the other modules on the same bus are OK (an
> assymetric supply caused by the power supply would affect other
modules too)
> and if the two LEDs for +12V and -12V on the bus board light up. If
that's
> OK please use another bus connection cable to find out if the cable
causes
> the problem. And have an eye for the bus pin header of the A-199 module.
> Maybe one of the pins is broken or the solder on the bottom side is
not OK.
> And try also another connector of the bus board (maybe the pin
header of the

> bus board causes the problems).
> 
> Good luck
> Dieter Doepfer
>

And other modules on the bus are unaffected.

TJ

Hi Dieter

> please double check if the other modules on the same bus are OK (an
> assymetric supply caused by the power supply would affect other modules too)
The other modules do not have to be affected necessarily. There could be 
some resistance between the (correctly working) powerbus and the power 
connections on the modules pcb (I had this on one channel of my Yamaha 
desk when I bought it).


Florian

Hi TJ,
 
> Does anyone have any suggestions? I'm gutted, I finally get the spring
> sound of my dreams, and now its gone again... :help:

Coming a bit late into this thread, and I haven't checked the circuit 
in detail, but I'm wondering what the input impedance of the 
Accutronics tank is (didn't spot if it was mentioned before)? All tanks 
are *not* equal - this could be as low as 8ohms, and compared to the 
Belton's 150ohm, whilst it might not cause undue problems to the 
circuit, any deviation from what the circuit was designed for is likely 
to make it sub-optimal, performance-wise. The code on the tank will 
need 'decoding' in order to find out what it is - details are at the 
Accutronics site, or post them here, and I can easily do it.

Tim

I've just noticed in a couple of pictures online, that the power supply in the G6 Suitcase is 
fixed at both sides - mine is only bolted on the right hand side (from the front), so the 
power supply kind of bounces on the two bolts, with the left hand side sticking out freely...is 
this normal? Would this have any impact on the current to the modules? 

TJ

--- In Doepfer_a100@yahoogroups.com, "aesoteric@..." <aesoteric@...> wrote:

>
> And other modules on the bus are unaffected.
> 
> TJ
>

Thanks Dieter, 

The case was bought from Thomann a couple of weeks ago, so all I can
think is that the screws snapped in transit. There aren't any screws
missing, but the two that I would assume the power supply should be
fixed to don't go anywhere. They have a standoff, and don't do
anything - should they go right through the board?

Here's a picture just to check. What is the screw size? 

http://www.flickr.com/photos/23732700@N05/3215661296/in/photostream/

Many thanks,
TJ.


 
> Though this does not affect the current of the modules the power
supply has
> to be fixed with 4 screws and should not bounce on the other two
bolts. I'm
> quite sure that the G6 was delivered not in that way from us. Maybe the
> power supply has been replaced and the owner forgot to fix the power
supply
> with all four screws. The missing two screws should be added in any
case !

> 
> Best wishes
> Dieter Doepfer
>

> I've just noticed in a couple of pictures online, that the power supply in
the G6 Suitcase is
> fixed at both sides - mine is only bolted on the right hand side (from the
front), so the
> power supply kind of bounces on the two bolts, with the left hand side
sticking out freely...is
> this normal? Would this have any impact on the current to the modules?
>
> TJ

Though this does not affect the current of the modules the power supply has
to be fixed with 4 screws and should not bounce on the other two bolts. I'm
quite sure that the G6 was delivered not in that way from us. Maybe the
power supply has been replaced and the owner forgot to fix the power supply
with all four screws. The missing two screws should be added in any case !

Best wishes
Dieter Doepfer

Hi Florian,

Thanks for the reply. Do you know where the supply should connect to
the housing on the left? What is the purpose of the screw/standoff in
the picture that goes no-where? I can't see any other place the board
could connect to the housing.

I'm starting to despair with the whole thing...

--- In Doepfer_a100@yahoogroups.com, Florian Anwander <fanwander@...>
wrote:
>
> Hi
> 
> > think is that the screws snapped in transit. There aren't any screws
> > missing, but the two that I would assume the power supply should be
> > fixed to don't go anywhere. They have a standoff, and don't do
> > anything - should they go right through the board?
> > Here's a picture just to check. What is the screw size? 
> > http://www.flickr.com/photos/23732700@N05/3215661296/in/photostream/
> Those are the screws which fix the heatsink to the pcb. Thats normal. 
> They have nothing to do with the fixing of the powersupply to the
housing.

> 
> Florian
>

Hi

> think is that the screws snapped in transit. There aren't any screws
> missing, but the two that I would assume the power supply should be
> fixed to don't go anywhere. They have a standoff, and don't do
> anything - should they go right through the board?
> Here's a picture just to check. What is the screw size? 
> http://www.flickr.com/photos/23732700@N05/3215661296/in/photostream/
Those are the screws which fix the heatsink to the pcb. Thats normal. 
They have nothing to do with the fixing of the powersupply to the housing.

Florian

Thanks, 

Sorry for the quality of the picture - my camera is out of batteries,
so I used my phone. I'll take a better image later on. 

The screws I'm interested in aren't the one's in the heatsink, but
rather the one behind, in the square, and connected to the case, but
to nothing else - just seems strange to me.

Many thanks for you help.

TJ

--- In Doepfer_a100@yahoogroups.com, Florian Anwander <fanwander@...>
wrote:

>
> Hello
> 
> > the housing on the left? What is the purpose of the screw/standoff in
> > the picture that goes no-where? I can't see any other place the board
> > could connect to the housing.
> It shall be like it is: it fixes the heatsink on the pcb. Thats it. 
> There is nothing wrong with the screw that is shown.
> > I'm starting to despair with the whole thing...
> I think you should take some sharp and not too small picture from the 
> rear side of your case and I might do the same (but not today). From 
> there you and us may see whether something is wrong or not.
> 
> Florian
>

Hello

> the housing on the left? What is the purpose of the screw/standoff in
> the picture that goes no-where? I can't see any other place the board
> could connect to the housing.
It shall be like it is: it fixes the heatsink on the pcb. Thats it. 
There is nothing wrong with the screw that is shown.
> I'm starting to despair with the whole thing...
I think you should take some sharp and not too small picture from the 
rear side of your case and I might do the same (but not today). From 
there you and us may see whether something is wrong or not.

Florian

Hi Dieter,

The four screws in the rear side of the suitcase are inplace, and are
attached to the standoffs inside the case - however, I think the
screws attaching the heat sink to the PCB and into the standoffs have
snapped (If I understand how it should be correctly) 

You can see in this picture, the standoff attached to the rear of the
case is in the square, and the screw coming from it into the case goes
nowhere:

http://www.flickr.com/photos/23732700@N05/3215661296/in/photostream/

I'll try to take a better picture if that would help? 


Many thanks,
TJ




> Florian's comments are 100% correct. The heatsinks have internal female
> threads. So there is no nut required at this position. But the other
side of
> the 4 standoffs (i.e. the female threads of the standoffs) have to be
> mounted with 4 screws at the rear side of the suitcase.
> 
> Just to be sure: can you confirm that the power supply is mounted by
means
> of 2 screws only to the rear side of the suitcase (not 4 as it
should be) ?

> If this applies I ask you to take a picture from the rear side of the
> suitcase that shows the two unused mounting holes.
> 
> Best wishes
> Dieter Doepfer
>

> Thanks,
>
> Sorry for the quality of the picture - my camera is out of batteries,
> so I used my phone. I'll take a better image later on.
>
> The screws I'm interested in aren't the one's in the heatsink, but
> rather the one behind, in the square, and connected to the case, but
> to nothing else - just seems strange to me.
>
> Many thanks for you help.
>
> TJ

Florian's comments are 100% correct. The heatsinks have internal female
threads. So there is no nut required at this position. But the other side of
the 4 standoffs (i.e. the female threads of the standoffs) have to be
mounted with 4 screws at the rear side of the suitcase.

Just to be sure: can you confirm that the power supply is mounted by means
of 2 screws only to the rear side of the suitcase (not 4 as it should be) ?
If this applies I ask you to take a picture from the rear side of the
suitcase that shows the two unused mounting holes.

Best wishes
Dieter Doepfer

Hi Florian,

I've established that the A199 distorts with the original spring, and
am in the process of arranging to have it sent back. This is an
unrelated potential problem with the bouncing power supply unsecured
power supply PCB.

So, you are saying that there SHOULD be two screws going into the back
of the case, and into standoffs directly behind the left side of the
power PCB, that are attached to nothing? And that the power PCB should
only be connected to the case by two screws. My apologies if this is
getting on your nerves...

TJ

--- In Doepfer_a100@yahoogroups.com, Florian Anwander <fanwander@...>
wrote:

>
> aesoteric@... wrote:
> > Hi Dieter,
> > 
> > The four screws in the rear side of the suitcase are inplace, and are
> > attached to the standoffs inside the case - however, I think the
> > screws attaching the heat sink to the PCB and into the standoffs have
> > snapped (If I understand how it should be correctly) 
> NO NO NO NO NO NO. Everything is ok with your case.
> 
> Please reattach the original Doepfer spring and check whether the 
> distortion still occurs. If it does NOT occur, then you know the fault 
> is the new spring. If it DOES still distort withthe original spring, 
> then send the module back to Thomann with the original spring.
> 
> Florian
>

Here is a final link to a better quality photo of the unconnected
standoffs. If they are meant to do nothing, then I am happy...but
somehow I doubt it. 

http://www.flickr.com/photos/23732700@N05/3215418519/

Regards.
TJ

--- In Doepfer_a100@yahoogroups.com, "aesoteric@..." <aesoteric@...>
wrote:
>
> Hi Florian,
> 
> I've established that the A199 distorts with the original spring, and
> am in the process of arranging to have it sent back. This is an
> unrelated potential problem with the bouncing power supply unsecured
> power supply PCB.
> 
> So, you are saying that there SHOULD be two screws going into the back
> of the case, and into standoffs directly behind the left side of the
> power PCB, that are attached to nothing? And that the power PCB should
> only be connected to the case by two screws. My apologies if this is
> getting on your nerves...
> 
> TJ
> 
> --- In Doepfer_a100@yahoogroups.com, Florian Anwander <fanwander@>
> wrote:
> >
> > aesoteric@ wrote:
> > > Hi Dieter,
> > > 
> > > The four screws in the rear side of the suitcase are inplace,
and are
> > > attached to the standoffs inside the case - however, I think the
> > > screws attaching the heat sink to the PCB and into the standoffs
have
> > > snapped (If I understand how it should be correctly) 
> > NO NO NO NO NO NO. Everything is ok with your case.
> > 
> > Please reattach the original Doepfer spring and check whether the 
> > distortion still occurs. If it does NOT occur, then you know the
fault 

> > is the new spring. If it DOES still distort withthe original spring, 
> > then send the module back to Thomann with the original spring.
> > 
> > Florian
> >
>

aesoteric@talk21.com wrote:
> Hi Dieter,
> 
> The four screws in the rear side of the suitcase are inplace, and are
> attached to the standoffs inside the case - however, I think the
> screws attaching the heat sink to the PCB and into the standoffs have
> snapped (If I understand how it should be correctly) 
NO NO NO NO NO NO. Everything is ok with your case.

Please reattach the original Doepfer spring and check whether the 
distortion still occurs. If it does NOT occur, then you know the fault 
is the new spring. If it DOES still distort withthe original spring, 
then send the module back to Thomann with the original spring.

Florian

hey guys.  you might remember that i had a Flame Clockwork up for sale a few
months ago.  Well, i sold it to someone locally but it ended up that one of
the channels wasn't responding properly so i took it back.   it was still
under warranty so i sent it back to the place of purchase who, in turn, sent
it to Flame for repair.

after several months, Flame still hasn't fixed the broken unit, so the place
of purchase replaced it with a brand new one!  i'd love to hang onto it, but
alas, i need the cash. 

so, a Brand New in the Box never opened Flame Clockwork could be yours for
$400 shipped.  i'll ship overseas if you'd like to pay for the shipping
costs. 

this thing is wicked fun. it clocks to midi too: 

 <http://www.analoguehaven.com/flame/clockwork/>
http://www.analoguehaven.com/flame/clockwork/ 

 

i don't have a picture of the actual unit because i wanted to avoid opening
the box. 

thanks! 

 

And thanks for the bandwidth :-) 

 

jared

 



[Non-text portions of this message have been removed]

Hi Florian, 

Thanks for all you help. I've literally just uploaded some slightly
better pics, with arrows, which might be why they weren't there before. 

I had just assumed the power supply was supposed to 'float', as it was
like that when I got it out of the box. I'm hoping it might simply be
the case that I can replace the screws through the case and not have
to send it off for repair. I guess I'll have to see what Dieter says. 

Thanks again for your patience and for taking the time to help me out. 

Cheers,
TJ 

--- In Doepfer_a100@yahoogroups.com, Florian Anwander <fanwander@...>
wrote:
>
> Hello TJ
> 
> BONGGGgggg
> 
> > http://www.flickr.com/photos/23732700@N05/3216521828/in/photostream/
> I missed the second picture in this gallery. It shows clearly that the 
> two left side screws are broken (you never could raise the powerboard 
> that way if they were attached correctly).
> 
> Dieter may correct me, but this a warranty case. You should ship it
back 

> to Thomann.
> I recommed to unscrew the complete powersupply and then to remove all 
> connectors (this may require a plier). Then pack the powersupply 
> separately. Otherwise it might come loose completely while the shipping 
> and get damaged or might damage other parts.
> 
> Best regards, Florian
>

Hi TJ

> Here is a final link to a better quality photo of the unconnected
> standoffs. If they are meant to do nothing, then I am happy...but
> somehow I doubt it. 
> 
> http://www.flickr.com/photos/23732700@N05/3215418519/

I still don't get it. Too much detail, not enough overview.
Could you please make a picture from the complete outer rear side of 
your case and a frontal shot from inside at the complete power supply.

Florian

Ok here we go:


http://fa.utfs.org/diy/a100/rear_side.jpg shows the four screws
http://fa.utfs.org/diy/a100/powersupply_frontal.jpg shows the location 
of these four screws as frontal view to the powersupply.
http://fa.utfs.org/diy/a100/powersupply_detail.jpg shows the two left 
side screws.

Florian

Hello TJ

BONGGGgggg

> http://www.flickr.com/photos/23732700@N05/3216521828/in/photostream/
I missed the second picture in this gallery. It shows clearly that the 
two left side screws are broken (you never could raise the powerboard 
that way if they were attached correctly).

Dieter may correct me, but this a warranty case. You should ship it back 
to Thomann.
I recommed to unscrew the complete powersupply and then to remove all 
connectors (this may require a plier). Then pack the powersupply 
separately. Otherwise it might come loose completely while the shipping 
and get damaged or might damage other parts.

Best regards, Florian

Thanks Dieter, 

I'll send it back with the Spring Reverb module mounted in the case,
to kill two birds with one stone. Should I return the Belton reverb
tank also, or just keep that here as it is fine?

TJ


--- In Doepfer_a100@yahoogroups.com, <yahoo@...> wrote:
>
> > Hello TJ
> >
> > BONGGGgggg
> >
> > > http://www.flickr.com/photos/23732700@N05/3216521828/in/photostream/
> > I missed the second picture in this gallery. It shows clearly that the
> > two left side screws are broken (you never could raise the powerboard
> > that way if they were attached correctly).
> >
> > Dieter may correct me, but this a warranty case. You should ship
it back
> > to Thomann.
> > I recommed to unscrew the complete powersupply and then to remove all
> > connectors (this may require a plier). Then pack the powersupply
> > separately. Otherwise it might come loose completely while the
shipping
> > and get damaged or might damage other parts.
> >
> > Best regards, Florian
> 
> Looks indeed like a transport damage. Please do no longer use the
suitcase
> and send it back to Thomann. Only if you are experienced with
electronics
> I'd recommend to replace the standoff yourself. In this case we
would send
> you the required parts for free. But please overrate yourself. In
case of

> doubt send the complete unit back to Thomann.
> 
> Best wishes
> Dieter Doepfer
>

> So, you are saying that there SHOULD be two screws going into the back
> of the case, and into standoffs directly behind the left side of the
> power PCB, that are attached to nothing?


Please refer to my last email: "The heatsinks have internal female
threads. So there is no nut required at this position."

Consequently the standoffs are not attached to nothing but to the heatsinks
via the internal female
threads (which work like nuts) !

Dieter Doepfer

> Hello TJ
>
> BONGGGgggg
>
> > http://www.flickr.com/photos/23732700@N05/3216521828/in/photostream/
> I missed the second picture in this gallery. It shows clearly that the
> two left side screws are broken (you never could raise the powerboard
> that way if they were attached correctly).
>
> Dieter may correct me, but this a warranty case. You should ship it back
> to Thomann.
> I recommed to unscrew the complete powersupply and then to remove all
> connectors (this may require a plier). Then pack the powersupply
> separately. Otherwise it might come loose completely while the shipping
> and get damaged or might damage other parts.
>
> Best regards, Florian

Looks indeed like a transport damage. Please do no longer use the suitcase
and send it back to Thomann. Only if you are experienced with electronics
I'd recommend to replace the standoff yourself. In this case we would send
you the required parts for free. But please overrate yourself. In case of
doubt send the complete unit back to Thomann.

Best wishes
Dieter Doepfer

> Thanks Dieter,
>
> I'll send it back with the Spring Reverb module mounted in the case,
> to kill two birds with one stone. Should I return the Belton reverb
> tank also, or just keep that here as it is fine?
>
> TJ

I'd recommend to send the reverb tank too. Of course we have the tanks here
but maybe the tank causes the problem.

Best wishes
Dieter Doepfer