If they do not test open than the pan is ok, if not > return cable from the board, hook your ohm meter across each rca plug > If you have a ohm meter set it for ohms and unplug the reverb send and To do this you will need a cable that goes from a male rca to 1/4" male, this will let you put the send signal into another amp, or if you have a long enough male rca to rca cable you can test it thru your stereo.ĭo not worry if you do not know which cable is the send, you will not harm anything by plugging a output to output, but note if the everything is good and the pan is plugged in the wrong way you will not get any reverb. You should hear a buzz on one of the cables, if not than the recovery stage is dead, but you should still check the send stage. To furthure confirm that this stage is working unplug both cables from the pan, and plug them back into the amp, turn the reverb down and touch the tip of each cable one at a time with your finger while you turn up the reverb. If these checks confirm the pan being ok than its time to check the amp.Ī quick check is to just turn up the reverb on the amp, and listen to hear any gain in hiss or hum as this would most likly confirm that the reverb recovery section of the amp is working. If the wires are ok,than the small transducer is open and its time for a new pan. Sometimes this can be hard to see due to the bent over wire hold down arm. If they do not test open than the pan is ok, if not you will have peel off the cover from the pan and see if any of the small wires coming off of the female rca on the are broken off. If you have a ohm meter set it for ohms and unplug the reverb send and return cable from the board, hook your ohm meter across each rca plug and check for a reading. Thanks in advance for any help with this. So, now, for some of you guys with more experience with this stuff, what should I check now? I cleaned the contacts and plugged everything back up. I checked the input/output cables from the tank for continuity and everything appears to be fine there. I checked all the knobs on all four channels and everything was working, except the reverb. Lo and behold, when I got that completed, my hum issue had vanished. I cleaned the unit up and set it back for a time when I could delve into it to see if I could figure out what was causing the hum.Īnyway, this morning, I took the chassis out of the unit and decided that the first thing I'd do was to put a grounded power cord on it. I did notice that the cardboard dust cover was collapsing and actually riding on the springs, so I took it off, fashioned another one and glued it on. I checked to see if the reverb tank was actually plugged in inside the unit and it was. The reverb wasn't working either and I thought the two issues might be related. I don't know where the guy was storing the thing, but it had about 8 lbs of dust on it. It was working, sort of, but had a high amount of hum in it. OK, A couple months ago, I ran onto a deal ($25) on this little jewel.
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