PLEASE HELP! My reverb doesn't work on my Twin Reverb...

[elenore19]

If you have a meter you could check the continuity of the tank circuit.

I might have a meter somewhere, not too familiar with using one though. How would I go about checking the continuity of the tank circuit?

 

[elenore19]

For what it's worth this is the schematic section of the reverb. The green overlay is the dry signal going to the reverb tank. The red overlay is the wet reverb signal after the tank.

Any chance you have a stereo, mixer, etc. with RCA ins? If you do and you can find an RCA to RCA cable, plug one end into where the white plug would go on the amps chassis and the other end into the stereo, mixer or whatever you might have that can be used to monitor a signal. The signal out of that jack is fairly hot, so keep the volume down on what you're monitoring with. If you get signal at that jack, it's a pretty fair guess the reverb tank has an issue.

I have no idea even where to begin with reading that schematic. I looked at it somewhere else and tried to figure something out, but I really just am ignorant when it comes to reading electrical diagrams like that....Someday...
That being said.
SO I have the RCA white plugged into the amp. Then the other end of the white into the input of the tank. Then the red from the output of the tank to the red input of my mixer? is that right?
Then if I get a signal through what I'm monitoring, it means there's a problem with the tank? Do I have to play my guitar to get a signal? or can I just do this with the amp powered up with no guitar?

A side question...could I use my Tv's rca inputs to try this out? It would be a lot more convenient so I don't have to haul this 64lb beast of an amp up 2 flights of stairs....

 

[elenore19]

Thanks for the help. I used that and finally isolated the issue. I found this spot where if I put enough pressure on it it worked, so I just taped it and voila! it works great. I'll just reinforce the tape a little better and I should be back in business.



Thanks everyone for the help! It was greatly appreciated.

 

[dintymoore]

Thanks for the help. I used that and finally isolated the issue. I found this spot where if I put enough pressure on it it worked, so I just taped it and voila! it works great. I'll just reinforce the tape a little better and I should be back in business.



Thanks everyone for the help! It was greatly appreciated.

That's great - and good you stuck with it because most of the time you can at least isolate the problem and save $ if you have to take it in for repairs.

That's how you learn.

I've done tons of "in a pinch" repairs like you're doing with tape, but can you see what it is to actually restore it to the way it should be - is it just a bad RCA plug?