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If all else fails, check the circuit board traces for the 6922 tubes

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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  • If all else fails, check the circuit board traces for the 6922 tubes - garymuffley 16:48:20 08/21/20 (0)

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