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In Reply to: RE: Music Reference RM9mkII Driver Tubes posted by Berrell88 on August 21, 2020 at 14:09:41
While it's working and you have it flipped on it's side with the bottom cover off and one hand in your pocket!!!!
Take a pencil and push on the solder contacts of the tube socket on the effected side. See if you can get it to work. This way you can pin down what socket and where the failing joint might be. Also visually look at all the solder pads under magnification.
Reflow the solder on all the sockets on that board. Also make sure no components have started to become intermittent.
Follow Ups:
Great idea! I've used the eraser end of a pencil many times to trouble shoot not only audio, but other household or auto circuitry.
Totally forgot about that one!
Cheers!
Jonesy
"I know just enough to get into trouble. But not enough to get out of it."
While the unit is open and off- check the electrolytic caps for age/leaks and resistors on the circuit board for heat or burn marks - you may wish to replace those components-
Happy Listening
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