>Thanks Richard and Ken. Unplugged power pin resistance measures 5K and 58K.No backwards chips. What else would cause the excessive load?
Measure both directions incase you have a diode effect happening (i.e. the
load is only in one direction).
A wiring error - such as one of the power rails accidently being connected
to the front panel instead of 0V. When it is mounted, you would get a short
circuit.
Ken
>--- In cgs_synth@yahoogroups.com, sasami@... wrote:_______________________________________________________________________
>>
>> Backwards chip?
>>
>> It sounds like your PSU is going into current limit/shutdown when switched
>> on, due to the excessive load.
>>
>> Ken
>>
>> >When I plug in the VCS and measure the power pins from the bottom of the
>> PCB, I don't get + and - 15v, I get much smaller amounts.
>> >
>> >Also, when the VCS is plugged in, my dotcom Q960 doesn't work at all.
>> >
>> >No smoke, nothing seems to be getting hot.
>> >
>> >Any ideas?
>> >
>> >Thanks
>> >
>> >
>> >
>> >------------------------------------
>> >
>> >The CGS Modular Synth home page: http://www.cgs.synth.net/
>> >Yahoo! Groups Links
>> >
>> >
>> >
>> >
>> _______________________________________________________________________
>> Ken Stone sasami@... otherunicorn@...
>> Modular Synth PCBs for sale <http://www.cgs.synth.net/>
>> Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>
>>
>
>
>
>
>------------------------------------
>
>The CGS Modular Synth home page: http://www.cgs.synth.net/
>Yahoo! Groups Links
>
>
>
>
Ken Stone sasami@... otherunicorn@...
Modular Synth PCBs for sale <http://www.cgs.synth.net/>
Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>