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Jolida CD Repair

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I have a Jolida JD100 cd player. I had been running RCA black plates. Recently one of the channels went out, and I swapped tubes around to find that it was one of the tubes. I put in a spare set, and the channel worked, but both channels were noisey, kind of a crackley-hissy sound. Other tubes didn't help. Using the digital output into an outboard DAC, everyhting works fine. After pulling and inspecting the output board, it looks like two identical capacitors have a small black mark on their top edge. These are very small (1/8" dia) orangish lens shaped caps marked 33. There is one each for each channel, as far as I can tell, a part of the tube circuit. I feel confident in replacing these, but I'm not sure of the value. Would this be the first step to repairing this unit? I'm very new at diagnosing and repairing electronics, though I do plan to try some DIY kits. Any help is appreciated
Thanks,
Dave



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