I've reversed the power connector on a Power-One supplied module with no
lasting bad effects. Stupidity happens. Lucky to have the tolerant
supply. Another mistake is to offset the 4-pin connector by one pin.
What happens depends on the whether the MOTM type connector has both
middle pins connected on the board. If the supply is shorted, nothing
happens, but if not, you get interesting LED conditions :).
-Richard Brewster
sasami@... wrote:
lasting bad effects. Stupidity happens. Lucky to have the tolerant
supply. Another mistake is to offset the 4-pin connector by one pin.
What happens depends on the whether the MOTM type connector has both
middle pins connected on the board. If the supply is shorted, nothing
happens, but if not, you get interesting LED conditions :).
-Richard Brewster
sasami@... wrote:
>>any opinions on which semis are likely to get blown in a reversed power
>>
>>
>situation, as a starting point for replacing?
>
>It depends on your power supply. I have reversed things on my synth before
>with no ill effects. The power one supply senses over current and shuts
>down. If however, your supply is of the sort that just keeps on pumping out
>the power, things may get killed. Step one - feel for any components that
>are running hot. Step two - poke around with a multimeter and read some
>voltages. If you have a logic probe, check the operation of the counter.
>Check the VCO is working (probably is, going by what you've said).
>
>
>
>>unfortunatley, this is not the dumbest mistake i've made.
>>
>>
>
>Join the club.
>
>Ken
>_______________________________________________________________________
>Ken Stone sasami@... or sasami@...
>Modular Synth PCBs for sale <http://www.blaze.net.au/~sasami/synth/>
>Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>
>
>