Crack Just Went Silent

[Murray Stevens]

Hi, I built my Crack a couple of months ago and all has been fine. On Friday, it suddenly went silent. No drama, it just went silent.

Today is the first day I have had time to troubleshoot a little.
Headphones work when plugged into computer output.
Cord from computer output checked for continuity and appears to be ok. (I'm new at this so I set my multimeter to "Continuity <100 ohms" per the manual and got readings when testing from each RCA jack to the miniplug.
Tubes glow when power is turned on.

I just did the resistance check per the manual. All is well except when I test Terminal 5. It starts at a value of 60ish and then climbs slowly upwards. This is a behavior similar to Terminal 13. This doesn't seem to be the way it should behave as it is marked with an asterisk which indicates it should display a fluctuating reading.

I don't have time to do anymore today before I leave for home. Just wondering if Terminal 5 indicates a problem that could have resulted in no output?

Will test voltages tomorrow when I have someone else here...I am very paranoid about the safety warnings...sorry for being a wimp ;-)

Cheers,

Murray

[Paul Birkeland]

The voltages will be very helpful.

-PB

[Murray Stevens]

Hi PB,

I just measured all the voltages. Everything checked out ok. Plugged in the headphones again and it works just fine. I don't know what happened.

I appreciate you trying to help a noob.

But I'm a happy guy now, the tunes are flowing again :-)

Cheers,

Murray

[Grainger49]

Murry,

There is something wrong.  It will come back after a while. 

I would suggest taking a close look at all solder joints.  There is a possibility that one wasn't soldered at all.  Or the solder joint is bad. 

I would just go through and touch up every solder joint in the power supply.  If the amp was just dead on both channels it could have been the heater voltage or the high voltage missing.