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In Reply to: Music Reference RM9mkII Driver Tubes posted by Berrell88 on August 21, 2020 at 14:09:41:
The RM-9 series of amps had a known problem with the circuit board traces breaking when the 6922 tubes were inserted and removed frequently. I fixed several RM-9 amps over the years that exhibited this issue. The tube sockets grip the 6922 very firmly and the stress on the circuit board will sometimes result in the traces breaking right at the tube socket on the board.
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Follow Ups
- If all else fails, check the circuit board traces for the 6922 tubes - garymuffley 16:48:20 08/21/20 (0)