Amp driving me nuts

[BassmanPaul]

We did try linking the Send and return of the Effects Loop with a cable did we??

 

[BlacknWhite]

We did try linking the Send and return of the Effects Loop with a cable did we??

Yep that actually got my Hope's up lol. One of the first things I tried and thought I found the problem as it worked with non issues for over an hour after I did it lol.

 

[whero]

As for cables and cabs that is always my first step.

I always start at the front of the signal chain and work to the amp. Check the bass (and battery for active electronics), instrument cable, FX pedals, etc. Then go to the speaker cab and work back to the amp. I don't start pulling amps apart until all jacks, cables, batteries, etc. have been cleared.

 

[Vanceman]

I once helped a friend do an engine swap because the car wouldn't start. Afterwards, it still wouldn't start. He towed it to the local fix it station, where they determined the fuel pump in the tank(EFI) was bad. I know that doesn't help, but it felt good just to say it (type it).

 

[BlacknWhite]

Well I found the problem. I was looking the power amp board over with my Magnifier before I bolted it back in and I noticed two of the contacts on one of the power tube sockets were bent and the gap was definitely big enough the pins were probably not getting full contact. All the other contacts on that socket were in good shape and the tension was good so I'm guessing that's how it passed the tap and wiggle test... I wouldn't have noticed it without my glass lol. I'm glad I opened it up because I did find some solder joints that would have been future issues but at least for next time I'll check all the contacts even if the tube feels snug! (Rookie mistake) The other three sockets looked good but I re tensioned them as well to be on the safe side.

 

[Rune Bivrin]

Good job!