K5synth

Well my k5 "got better", perhaps it was a problem with my headphones,
I hope.  Thanks for all the help on this issue.  I will let people
know how the 147k resistor thing goes.  Has anyone here done that mod?
 Are you happy with it?  
--- In k5synth@yahoogroups.com, "nelsonj_sce" <nelsonj_sce@y...> wrote:
> Hello all, 
> I was playing my K5 earlier today (through the headphones) when it
> made a "crack/pop" sound.  The volume level then dropped, and now when
> I play a loud Multi (such as loud horns or loud strings) the output
> distorts.  Sigles now seem quiter.  In fact, it seems that all the
> outputs (headphones, mix, 1-4) are all now a lot quiter.  Everything
> else seems to work perfectly.
> 
> I think an op-amp or part of the amp circuit went out.  Any ideas out
> there on what my problem is and how to fix it?  Does anyone know which
> op-amp controls the headphones (IC1, 4, 8 and 9 or something else)? 
> If one of these ICs went bad I guess I have to replace it - but I need
> to isolate the problem and change only the bad parts. (It doesn't look
> like it will be a lot of fun changing out one of these ICs.)
> 
> 
> Also, I plan on doing the 147k resistor hack very soon.  Any chance
> this will fix the problem?  
> 
> By any chance, does anyone have schematics for the k5 they could turn
> in to a .pdf and post?  That would help me a lot in seeing what the
> problem might be.
> 
> Thanks in advance for any advice.