I have a Sound Workshop Series 40 console, recently all recapped. +16v rail dies when ANY channel is plugged into chans 1-8. Power led inside PSU (70's Power One design) indicates voltage correct when not under load. Don't have a live load to test rail under controlled load. Any ideas the likely culprit? Might've used some bipolar MUSE caps in the PSU circuitry (not main filter/rectifier caps of course)....has been fine until now...that's really the only thing I can think of off the top of my head other than trying new voltage regs. Any ideas what might be the issue? Thanks fellas!
+ rail dies on console PSU
- Thread starter jdurango
- Start date
Help Support GroupDIY Audio Forum:
look for a backwards electrolytic cap.
JR
JR
pucho812
Well-known member
jdurango said:
backwards they can smoke, but if they are rated high enough in voltage will not smoke but can produce a thump sound at various intervals.
Have you tried to see if it's a single channel that is bringing the rail down? I would try pulling out all the modules and power it up from there, see if you still have a problem. Then from there can turn it off and add modules and see if after a certain number it drops, or after a specific channel it drops.
Can you measure the voltage rails with a multimeter unloaded?
