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212 Sixty-Five Reverb Not Working

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bradleyny
Posted on Monday, April 24, 2006 - 07:18 am:   

Hello. I'm new to this site and to Music Man amps. I've been playing Fender amps for almost 10 years, and decided to buy a 212 Sixty-Five after playing my friend's. I like everything about the amp I bought from him, except for two problems. First, the reverb does not work at all. I've tried it with and without the footswitch. Nothing. I inspected the reverb tank and all the cables, but saw nothing out of the ordinary. I tried switching the plugs that go into the chassis, thinking that they might have been reversed at some point; still no reverb. Second, when I switch from high power to low power, I notice no difference in sound or volume. Is it supposed to be that way. Maybe I'm inexperienced with these amps, but I thought it would be a lot quieter on the lower setting. If anyone knows anything that might help me, I'd be very appreciative.
bradleyny
Posted on Monday, April 24, 2006 - 07:20 am:   

I forgot to mention that when I was taking the tank out, with the amp on, it made a "boing" sound through the amp when I dropped the tank.
mike kaus
Posted on Tuesday, April 25, 2006 - 04:23 am:   

That's means the reverb SEND is picking up thereturn signal from the tank. Most likely, the little transformer in the pickup tank is bad/broken and you just need a new tank. MM tanks seem to be a little fragile. If you have the 65 with the SS driver(no 12ax7), you will notice almost NO dif in sound level when you switch.
bradleyny
Posted on Tuesday, April 25, 2006 - 06:22 am:   

Mike- Thanks for the information. Is there a certain type of reverb tank I should replace the existing one with? Any brand you would recommend?
mike kaus
Posted on Wednesday, April 26, 2006 - 04:19 am:   

Accutronics is the only one that I am aware of. There is probably a mention in one of the archives of the numbers. I know it's been discussed around here a lot. Like I said, the MM tanks appear to be a little fragile. If you can't find it, somebody around here will remember the right part number. I don't use reverb myself so even though mine works NOW(I also had to replace the tank), if it broke, I may not notice for months!