Doepfer

Hi,

 

Just to add some figures to my previous post, my calculated module loads are:

 

+12V = 885mA

-12V = 568mA

Total = 1453mA

 

Best wishes.

 

Tim Burgess

 

From: Doepfer_a100@yahoogroups.com [mailto:Doepfer_a100@yahoogroups.com] 
Sent: 10 February 2018 18:23
To: Doepfer_a100@yahoogroups.com
Subject: RE: [Doepfer_a100] Troubleshooting lack of power on LC9

 

  

Hi,

I got some eyes to check the glass fuse in the PSU and it’s blown. I thought I’d kept track of my current drain, but I’ve just recalculated and it looks like I may be over what the PSU can supply, hence my problems.

Can I please check my understanding of how I calculate my available maximum current drain before stripping everything down and attempting operation with a new fuse?

My LC9 has a V2 power supply, which I believe provides a maximum drain of 1200mA. Firstly, am I correct that this represents the total used by all my modules (i.e. the total of the +12V load and the -12V load). Secondly, if I’m operating within this limit, I’m assuming that I can have modules wherever I like, i.e. the 1200mA total isn’t broken up with a 400mA maximum for each row? 

Since I don’t have another case to move any modules that are pushing me over the limit, how difficult would it be to replace my V2 power supply with a V3? Do I need an electrician for this, or could my technically-aware wife attempt it?

Best wishes.

Tim Burgess

From: Doepfer_a100@yahoogroups.com [mailto:Doepfer_a100@yahoogroups.com] 
Sent: 06 February 2018 00:55
To: Doepfer_a100@yahoogroups.com
Subject: Re: [Doepfer_a100] Troubleshooting lack of power on LC9

You might just need to replace the fuse

Confirm what PSU model you have and refer to this page:

http://www.doepfer.de/faq/a100_faq.htm#Fuse

On Feb 5, 2018, at 11:08 AM, 'Tim Burgess' tim@raisedbar.net <mailto:tim@raisedbar.net> [Doepfer_a100] <Doepfer_a100@yahoogroups.com <mailto:Doepfer_a100@yahoogroups.com> > wrote:

Hi,

I’ve been having some mail issues, so apologies if this has come through previously.

I have an LC9 case that is not receiving power when turned on. I’ve swapped the power cable out for the known good cable from my G6 case, but I still get no power to my modules. The case has been moved since the last time I used it – is it possible that a module’s connection is become partially-seated and this is preventing power-up? I’m a long way from anybody who could service the unit for me and I’m blind, so removing all of the modules and asking somebody to fit them for me again is something I want to avoid if a loose connection wouldn’t be a possible cause of the fault.

Any and all suggestions gratefully received.

Best wishes.

Tim Burgess

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