[sdiy] Prophet 10 on fritz again.

Barry Klein Barry.L.Klein at wdc.com
Sat May 14 00:53:24 CEST 2011


Or at least fix the problem first before messing with anything else....

-----Original Message-----
From: synth-diy-bounces at dropmix.xs4all.nl
[mailto:synth-diy-bounces at dropmix.xs4all.nl] On Behalf Of Graham Atkins
Sent: Friday, May 13, 2011 3:23 PM
To: Doug Terrebonne
Cc: Synth-diy at synth-diy.org
Subject: Re: [sdiy] Prophet 10 on fritz again.

I cringe when I read some posts where people say "I replaced X Y Z as a
matter of course" without any real justification. People look for a quick
fix rather than finding out how the circuit works and intelligently changing
suspect parts.  
Apart from anything
else there is always the risk of damaging PCB tracks when removing parts,
particularly on old 70's / 80's non glass-fibre PCB's, which can lead to a
whole lot more problems.

Graham

On 13 May 2011, at 08:56, Doug Terrebonne wrote:

> I would generally agree. The synth forums are full of people saying 
> that you should go in and replace all the caps whenever someone 
> reports a problem on older synths. The only ones I would be sure to 
> replace is older tantalums which like to short out and large bulging 
> electros in the PS.
>
> Doug
> synthparts.com
>
> On May 12, 2011, at 11:46 PM, Gordon JC Pearce <gordonjcp at gjcp.net>
> wrote:
>
>> On Thu, 2011-05-12 at 16:26 -0700, Steve Galle wrote:
>>
>>> Also the recent thread regarding capacitors makes me think, m aybe 
>>> the next step is to recap the cpu board. Tedious task to 
>>> contemplate, but one that I suppose should probably be done 
>>> regardless...
>>
>> ... and guaranteed to leave you with more faults than you began with!
>>
>> Never, ever do this.  Randomly ripping out and replacing components 
>> just because someone on the Internet said somewhere that they *might* 
>> be faulty, maybe, is a bad idea.
>>
>> Find the fault properly.  Fix the fault properly.
>>
>> Gordon MM0YEQ
>>
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