Intermittent Power Failure

[joneric13]

Hey All,

The PS03 in my unit loaded with 8 C84's went on the fritz during a session yesterday. While in use (all 8 channels not using phantom power) made an ramping click/beep sound I could here through the monitors and then shut down. When I power it up now the power pulses on and off in a steady rhythmic pattern. The unit was not noticeably hot. Any ideas of what could be causing this would be greatly appreciated.

[tpryan]

What happens if you disconnect some or all of the modules?

[joneric13]

I will give that a go tonight and report back.

[joneric13]

I've traced the power failure back to the module in the channel #8 slot. With that one disconnected from the harness the power indicator stays solidly lit. The wires to the 6 pin adapter all seem to be firmly seated in the plug. Any advice on troubleshooting the module?

[tpryan]

So just to be clear, if only module #8 is connected, you still get the same symptom?

[joneric13]

Sorry for the delayed response, we must be on opposite schedules.

Well, Now it is behaving different. I tried only module #8 and the symptom did not occur. So I started plugging them back in, in reverse order from #8 and the pulsing did not start until Channel #3. From there I tried 2 & 1 unplugged and the pulsing continued. Then I plugged them all in and the symptom disappeared. Powered cycled it and now it's back and I didn't change anything. ?? I'm perplexed.

[joneric13]

OK. I have all except module #8 plugged in and it is staying powered on. It's been on for about 5 minutes.. no pulsing.

[tpryan]

Probably the best thing to do is send in the PS03 and module #8 so we can have a look at both. Send an e-mail to rma@seventhcircleaudio.com for return instructions.