Analogue-sequencer

HI

I thought i had survived the curse of the PLED but it looks like no to
that :(
I noticed last week my display was very dull and the digits looked
bright here and there then dull elsewhere. I've been busy so didnt
chase it up but yesterday i turned the P3 on and the display is
totally dark :(
I have a spare pled but i'm wondering if its worth putting in due to
all the problems....especially as i haven't used my P3 a whole lot and
its still died.. Thats not the P3's fault but mine for being ultra
busy this year and not having time to use it alot lately.
I read through some forum posts re the subject but have read of some
issues with slow response etc from some LCD's. Can anyone recommend a
LCD they have used and that they are happy with? Also is there any
need for heatsinks on the power transistors etc due to the increased
current draw of a LCD?

Cheers
Brett

> I thought i had survived the curse of the PLED but it looks like no to
> that :(

The PLED displays are no longer available at any of the suppliers I used -
according to one supplier, the makers of the display material used have
stopped producing it 'for financial reasons'.
Maybe that means they can make more money doing colour PLEDs for MP3
players, or maybe they had problems with high failure rates...

Anyway, much as I love the appearance of the PLED displays, they are not
that much nicer to look at than a good LCD to be worth the trouble.

I have been using Electronic Assembly white on blue LCD modules to replace
PLEDs that have failed in production units under warranty.
http://www.lcd-module.de/eng
Part number W162-BNLW

I have also looked at using Noritake LCD-compatible VFD displays, but these
are expensive (£30+), use a lot more current, and also have a gradual loss
of brightness over time.

Fitting an LCD module to a P3 requires 10mm M3 mounting screws and 5mm
spacers, since the LCD modules are thicker than the PLEDs.
The LCD backlight also needs R19 on the P3 mainboard to be fitted.
The EA modules I use need a 47R resistor there. Other makers modules may
vary.

On P3s with a serial number earlier than roughly #1040, the function key
switch board is too wide to allow the LCD to be fitted, so it needs a bit of
width removed with a file.
I'll put together an instruction page on this soon.

You can wire the ribbon cable directly to the contacts on the LCD module,
and put a plug on the other end.
I was thinking of getting some of the little PLED to IDC socket adaptor
boards made up, since it's a pain to remove and re-use the ones already on a
PLED module, and they didn't have connections for the backlight anyway.

> Also is there any
> need for heatsinks on the power transistors etc due to the increased
> current draw of a LCD?

No, it's well within the limits of the power supply.
Pre-production P3s used LCD modules in the first place.

Best regards,
Colin Fraser
Sequentix Music Systems Ltd
http://www.sequentix.com

Hi,

My PLED is dead, too:(

I've had to change the location of the studio. So the P3 was not
switched on for four weeks. After this break --> PLED is black.

I've ordered a "EA Blueline LCD Display". Hope it fits.

I would really appreciate an instruction page on this.

Cheers
Mario



> > I thought i had survived the curse of the PLED but it looks like no to
> > that :(
> 
> The PLED displays are no longer available at any of the suppliers I
used -
> according to one supplier, the makers of the display material used have
> stopped producing it 'for financial reasons'.
> Maybe that means they can make more money doing colour PLEDs for MP3
> players, or maybe they had problems with high failure rates...
> 
> Anyway, much as I love the appearance of the PLED displays, they are not
> that much nicer to look at than a good LCD to be worth the trouble.
> 
> I have been using Electronic Assembly white on blue LCD modules to
replace
> PLEDs that have failed in production units under warranty.
> http://www.lcd-module.de/eng
> Part number W162-BNLW
> 
> I have also looked at using Noritake LCD-compatible VFD displays,
but these
> are expensive (£30+), use a lot more current, and also have a
gradual loss
> of brightness over time.
> 
> Fitting an LCD module to a P3 requires 10mm M3 mounting screws and 5mm
> spacers, since the LCD modules are thicker than the PLEDs.
> The LCD backlight also needs R19 on the P3 mainboard to be fitted.
> The EA modules I use need a 47R resistor there. Other makers modules may
> vary.
> 
> On P3s with a serial number earlier than roughly #1040, the function key
> switch board is too wide to allow the LCD to be fitted, so it needs
a bit of
> width removed with a file.
> I'll put together an instruction page on this soon.
> 
> You can wire the ribbon cable directly to the contacts on the LCD
module,
> and put a plug on the other end.
> I was thinking of getting some of the little PLED to IDC socket adaptor
> boards made up, since it's a pain to remove and re-use the ones
already on a

> PLED module, and they didn't have connections for the backlight anyway.
> 
> > Also is there any
> > need for heatsinks on the power transistors etc due to the increased
> > current draw of a LCD?
> 
> No, it's well within the limits of the power supply.
> Pre-production P3s used LCD modules in the first place.
> 
> Best regards,
> Colin Fraser
> Sequentix Music Systems Ltd
> http://www.sequentix.com
>

There is an install guide here:
http://www.sequentix.com/sq_lcd.htm

Sorry, should have mentioned it on the list.
I have a stock of the white on blue displays, but don't yet have the adaptor
boards to fit them with a 16 way ribbon cable.
I should have them in a few weeks, the PCB suppliers are closed over
Christmas.

Best regards,
Colin Fraser
Sequentix Music Systems Ltd
http://www.sequentix.com

> -----Original Message-----
> From: analogue-sequencer@yahoogroups.com 
> [mailto:analogue-sequencer@yahoogroups.com] On Behalf Of eigentone2000
> Sent: 17 December 2007 14:08
> To: analogue-sequencer@yahoogroups.com
> Subject: [analogue-sequencer] Re: PLED replacement suggestions?
> 
> Hi,
> 
> My PLED is dead, too:(
> 
> I've had to change the location of the studio. So the P3 was not
> switched on for four weeks. After this break --> PLED is black.
> 
> I've ordered a "EA Blueline LCD Display". Hope it fits.
> 
> I would really appreciate an instruction page on this.
> 
> Cheers
> Mario
> 
> 
> 
> > > I thought i had survived the curse of the PLED but it 
> looks like no to
> > > that :(
> > 
> > The PLED displays are no longer available at any of the suppliers I
> used -
> > according to one supplier, the makers of the display 
> material used have
> > stopped producing it 'for financial reasons'.
> > Maybe that means they can make more money doing colour PLEDs for MP3
> > players, or maybe they had problems with high failure rates...
> > 
> > Anyway, much as I love the appearance of the PLED displays, 
> they are not
> > that much nicer to look at than a good LCD to be worth the trouble.
> > 
> > I have been using Electronic Assembly white on blue LCD modules to
> replace
> > PLEDs that have failed in production units under warranty.
> > http://www.lcd-module.de/eng
> > Part number W162-BNLW
> > 
> > I have also looked at using Noritake LCD-compatible VFD displays,
> but these
> > are expensive (£30+), use a lot more current, and also have a
> gradual loss
> > of brightness over time.
> > 
> > Fitting an LCD module to a P3 requires 10mm M3 mounting 
> screws and 5mm
> > spacers, since the LCD modules are thicker than the PLEDs.
> > The LCD backlight also needs R19 on the P3 mainboard to be fitted.
> > The EA modules I use need a 47R resistor there. Other 
> makers modules may
> > vary.
> > 
> > On P3s with a serial number earlier than roughly #1040, the 
> function key
> > switch board is too wide to allow the LCD to be fitted, so it needs
> a bit of
> > width removed with a file.
> > I'll put together an instruction page on this soon.
> > 
> > You can wire the ribbon cable directly to the contacts on the LCD
> module,
> > and put a plug on the other end.
> > I was thinking of getting some of the little PLED to IDC 
> socket adaptor
> > boards made up, since it's a pain to remove and re-use the ones
> already on a
> > PLED module, and they didn't have connections for the 
> backlight anyway.
> > 
> > > Also is there any
> > > need for heatsinks on the power transistors etc due to 
> the increased
> > > current draw of a LCD?
> > 
> > No, it's well within the limits of the power supply.
> > Pre-production P3s used LCD modules in the first place.
> > 
> > Best regards,
> > Colin Fraser
> > Sequentix Music Systems Ltd
> > http://www.sequentix.com
> >
> 
> 
> 
> 
>  
> Yahoo! Groups Links
> 
> 
>

Hi Colin

Hope your enjoying the hols ;) I'd be interested in one of the adapter
boards once you get them.

cheers
Brett

--- In analogue-sequencer@yahoogroups.com, "Colin Fraser" <colin@...>
wrote:
>
> There is an install guide here:
> http://www.sequentix.com/sq_lcd.htm
> 
> Sorry, should have mentioned it on the list.
> I have a stock of the white on blue displays, but don't yet have the
adaptor

> boards to fit them with a 16 way ribbon cable.
> I should have them in a few weeks, the PCB suppliers are closed over
> Christmas.
> 
> Best regards,
> Colin Fraser
> Sequentix Music Systems Ltd
> http://www.sequentix.com
> 
>  
> 
> > -----Original Message-----
> > From: analogue-sequencer@yahoogroups.com 
> > [mailto:analogue-sequencer@yahoogroups.com] On Behalf Of eigentone2000
> > Sent: 17 December 2007 14:08
> > To: analogue-sequencer@yahoogroups.com
> > Subject: [analogue-sequencer] Re: PLED replacement suggestions?
> > 
> > Hi,
> > 
> > My PLED is dead, too:(
> > 
> > I've had to change the location of the studio. So the P3 was not
> > switched on for four weeks. After this break --> PLED is black.
> > 
> > I've ordered a "EA Blueline LCD Display". Hope it fits.
> > 
> > I would really appreciate an instruction page on this.
> > 
> > Cheers
> > Mario
> > 
> > 
> > 
> > > > I thought i had survived the curse of the PLED but it 
> > looks like no to
> > > > that :(
> > > 
> > > The PLED displays are no longer available at any of the suppliers I
> > used -
> > > according to one supplier, the makers of the display 
> > material used have
> > > stopped producing it 'for financial reasons'.
> > > Maybe that means they can make more money doing colour PLEDs for MP3
> > > players, or maybe they had problems with high failure rates...
> > > 
> > > Anyway, much as I love the appearance of the PLED displays, 
> > they are not
> > > that much nicer to look at than a good LCD to be worth the trouble.
> > > 
> > > I have been using Electronic Assembly white on blue LCD modules to
> > replace
> > > PLEDs that have failed in production units under warranty.
> > > http://www.lcd-module.de/eng
> > > Part number W162-BNLW
> > > 
> > > I have also looked at using Noritake LCD-compatible VFD displays,
> > but these
> > > are expensive (£30+), use a lot more current, and also have a
> > gradual loss
> > > of brightness over time.
> > > 
> > > Fitting an LCD module to a P3 requires 10mm M3 mounting 
> > screws and 5mm
> > > spacers, since the LCD modules are thicker than the PLEDs.
> > > The LCD backlight also needs R19 on the P3 mainboard to be fitted.
> > > The EA modules I use need a 47R resistor there. Other 
> > makers modules may
> > > vary.
> > > 
> > > On P3s with a serial number earlier than roughly #1040, the 
> > function key
> > > switch board is too wide to allow the LCD to be fitted, so it needs
> > a bit of
> > > width removed with a file.
> > > I'll put together an instruction page on this soon.
> > > 
> > > You can wire the ribbon cable directly to the contacts on the LCD
> > module,
> > > and put a plug on the other end.
> > > I was thinking of getting some of the little PLED to IDC 
> > socket adaptor
> > > boards made up, since it's a pain to remove and re-use the ones
> > already on a
> > > PLED module, and they didn't have connections for the 
> > backlight anyway.
> > > 
> > > > Also is there any
> > > > need for heatsinks on the power transistors etc due to 
> > the increased
> > > > current draw of a LCD?
> > > 
> > > No, it's well within the limits of the power supply.
> > > Pre-production P3s used LCD modules in the first place.
> > > 
> > > Best regards,
> > > Colin Fraser
> > > Sequentix Music Systems Ltd
> > > http://www.sequentix.com
> > >
> > 
> > 
> > 
> > 
> >  
> > Yahoo! Groups Links
> > 
> > 
> >
>

Hi Colin,

> I have a stock of the white on blue displays, but don't yet have the  
> adaptor
> boards to fit them with a 16 way ribbon cable.

Is there any follow-up on this?

the PLED in my P3 has pretty much failed now; over the last two days  
it's gone from annoyingly patchy to basically unreadable. Time for an  
MOT and a service, I think.

	-- N.


Nick Rothwell / Cassiel.com Limited
www.cassiel.com
www.myspace.com/cassieldotcom
www.last.fm/music/cassiel
www.reverbnation.com/cassiel
www.linkedin.com/in/cassiel
www.loadbang.net

I've had real problems getting a p3 to work after the initial display
went...I am now onto my third diplay board..the last of which was
supplied directly by sequentix complete with adaptor board. I think
potential customers should be aware that the sequentix is really a
hobby item, if it goes wrong you are pretty much stuck. The boards
supplied dont fit, even the sequentix one, and you have to chop off
bits of PCB and leave screws out. Is there anybody out there r=that
offers a service to get this thing working
sean zoega

--- In analogue-sequencer@yahoogroups.com, "sean_zoega" <sean@...> wrote:
>
> I've had real problems getting a p3 to work after the initial display
> went...I am now onto my third diplay board..the last of which was
> supplied directly by sequentix complete with adaptor board. I think
> potential customers should be aware that the sequentix is really a
> hobby item, if it goes wrong you are pretty much stuck. The boards
> supplied dont fit, even the sequentix one, and you have to chop off
> bits of PCB and leave screws out. Is there anybody out there r=that
> offers a service to get this thing working
> sean zoega

My replacement display was easy to install and has been reliable since
installation (as has the memory upgrade in my other unit). I
appreciate the units are serviceable on par with 1970s-1980s synths.
Even with my limited skills, I've managed to keep a service person out
of the loop.

-Jim

Hi Colin,

On your website you state:

"Due to the discontinuation of the PLED display modules used in 
production P3s, any failed display will need to be replaced with an LCD 
module"

However on farnell site (ordernumber1216289) i've found an alternative 
PLED module which still can be delivered.

http://nl.farnell.com/1216289/electrical-circuit-protection/product.us0?
sku=ANDERS-ELECTRONICS-PDC1602M&_requestid=417298

I think this a good replacement for the original one. What's your 
opinion in this?

Regards,
-Frank

You're right they are the same, obviously Anders Electronics has made a 
RoHS compliant equivalent under the same productname (PDC1602M)

Farnell NL confirmed a shipment to be delivered in week 16

Regards,
-Frank

> -----Original Message-----
> From: analogue-sequencer@yahoogroups.com 
> [mailto:analogue-sequencer@yahoogroups.com] On Behalf Of sean_zoega
> Sent: 30 March 2008 11:44
> To: analogue-sequencer@yahoogroups.com
> Subject: [analogue-sequencer] Re: PLED replacement suggestions?
> 
> I've had real problems getting a p3 to work after the initial display
> went...I am now onto my third diplay board..the last of which was
> supplied directly by sequentix complete with adaptor board. I think
> potential customers should be aware that the sequentix is really a
> hobby item, if it goes wrong you are pretty much stuck. The boards
> supplied dont fit, even the sequentix one, and you have to chop off
> bits of PCB and leave screws out. Is there anybody out there r=that
> offers a service to get this thing working
> sean zoega

For the avoidance of doubt, Sequentix Ltd undertake repair work on P3s both
under warranty, or for a reasonable hourly rate.
You have to actually ask for this service.
Due to a lack of psychic ability, I am unable to pro-actively offer repair
services to customers who require them but have not as yet communicated that
need.

In the case of PLED failure, I can supply replacement LCD modules to
customers who feel able to do the install themselves, or have a handy local
tech.
This saves the return shipping costs for the complete P3, which amount to
several times the cost of the module.
But I'm happy to carry out LCD module replacements if the user feels unable
to do so.

The LCD replacement procedure is documented here:
http://www.sequentix.com/sq_lcd.htm

Best regards,
Colin Fraser
Sequentix Music Systems Ltd
http://www.sequentix.com

> However on farnell site (ordernumber1216289) i've found an 
> alternative 
> PLED module which still can be delivered.
> 
> http://nl.farnell.com/1216289/electrical-circuit-protection/pr
> oduct.us0?sku=ANDERS-ELECTRONICS-PDC1602M&_requestid=417298
> 
> I think this a good replacement for the original one. What's your 
> opinion in this?

These are the original parts - I got them direct from Anders Electronics.
Last time I tried to get some they were "out of stock indefinitely".
Then I heard that OSRAM (makers of the display glass) had discontinued the
process used for it, and supply of modules would run dry once stocks ran
out.
Farnell UK list them as "awaiting delivery".
Do Farnell NL actually have them ?
I'm not sure I'd recommend them even if they were available.
They look lovely, but they put the 'mean' in MTBF.

Best regards,
Colin Fraser
Sequentix Music Systems Ltd
http://www.sequentix.com

While we are talking about displays failing, is there a VFD that is a drop
in replacement?  I guess I'd like to make a "permanent" fix.

James R. Coplin
(郭杰明)

***************************************
Work is the Curse of the Drinking Class
***************************************

> While we are talking about displays failing, is there a VFD 
> that is a drop
> in replacement?  I guess I'd like to make a "permanent" fix.

I got a quote of roughly 40 ukp each for 16x2 LCD-compatible VFD displays
from Noritake.
They *should* work, though I haven't tested them - at the price, LCD is good
enough for me.
They have a much higher current draw than either PLED or LCD, so the
de-coupling resistor/capacitor on the P3 mainboard may need the resistor
replaced with an inductor if there is too much voltage drop.

Best regards,
Colin Fraser
Sequentix Music Systems Ltd
http://www.sequentix.com

Hello,
  I upgraded to v4 and have been having some problems. the first is that i can't initialize the memory. i can get to the screen where it asks to confirm initialization, but it will only allow me to hit F3 to continue, not to confirm deleting everything. F1 or F2 wont' work.
  also, every track has the same note information as every other track. and when i go to enter new note information, it won't let me. when i turn the note knobs the note display just shows a line through it. is this because they are ghosted and you aren't allowed to change the note information, as they are unchangeable copies?
  i also havent' been able to upgrade using p3 tools, i get a bad data error, so i upgraded using midi-ox.
  thanks

       
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>>I upgraded to v4 and have been having some problems. the first is
that i can't initialize the memory.<<

have you tried using your nose? :-)

my p3 was full of nonsense after I upgraded the memory; I can't
remember  what it was like after going to v4, but I went back & forth
a couple of times between v3 & v4 (indecision being a past-time of
mine) without too much trouble.

the power-on memory clearing operation should sort it out, but you
will have to use either a piece of camera tape to hold the step key
down, or use y'r nose (which is what I do..)

d.

i used a screwdriver!

duncan <ferrograph@aol.com> wrote:          >>I upgraded to v4 and have been having some problems. the first is
that i can't initialize the memory.<<

have you tried using your nose? :-)

my p3 was full of nonsense after I upgraded the memory; I can't
remember what it was like after going to v4, but I went back & forth
a couple of times between v3 & v4 (indecision being a past-time of
mine) without too much trouble.

the power-on memory clearing operation should sort it out, but you
will have to use either a piece of camera tape to hold the step key
down, or use y'r nose (which is what I do..)

d.



                           

       
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