Thanks for all your help
the problem of the overheating resistor is solved.
it was indeed a short to the ground.
still only lfo 3 &4 working properly...
the wiring from the pcb to switches, potmeters & leds seem to be OK,
because when I switch the wiring from lfo 3 to 2, then the led, pot
and led of lfo2 work properly.
so my guess is that something is wrong on the pcb, but so far I cant
figue out what it is...
thanks!
steven
the problem of the overheating resistor is solved.
it was indeed a short to the ground.
still only lfo 3 &4 working properly...
the wiring from the pcb to switches, potmeters & leds seem to be OK,
because when I switch the wiring from lfo 3 to 2, then the led, pot
and led of lfo2 work properly.
so my guess is that something is wrong on the pcb, but so far I cant
figue out what it is...
thanks!
steven
--- In cgs_synth@yahoogroups.com, sasami@... wrote:
>
> Component recognition problems. I very much doubt a 100n could get
hot on
> its own. Either something is heating it via radiation/conduction
(i.e heated
> BY the 10R), or alternately, it isn't a capacitor at all, which
would
> explain the 10 ohm resistor going up in smoke.
>
> Is anything else getting hot? The chip for example?
>
> Ken
>
> >When test running my newly build super psycho lfo, I found only
lfo 3 &
> >4 working. But what worried me more was the R10 resistor in the
power
> >filter that burned.It was the one on the +15V side of the
circuit.Also
> >the 100n capacitors surrounding the resistor got really hot.
> >As far as I can see, the part for the power seems to be correct.
No
> >electro capacitors seems to be wrong positioned.
> >The -15V side looks still OK and did not get hot.
> >
> >What could be a possible reason for this ?
> >Should I keep looking at the powersupply filter circuit or could
it be
> >a shortcircuit/wiring mistake in an other location ?
> >
> >
> >
> >
> >
> >The CGS Modular Synth home page: http://www.cgs.synth.net/
> >
> >Yahoo! Groups Links
> >
> >
> >
> >
>
______________________________________________________________________
_
> Ken Stone sasami@...
> Modular Synth PCBs for sale <http://www.cgs.synth.net/>
> Australian Miniature Horses & Ponies
<http://www.blaze.net.au/~sasami/>
>