JCM2000 Marshall Stable Bias Mod Kits
JCM2000 Marshall Stable Bias Mod Kits to fix overheating amps. Marshall TSL and DSL series amps (JCM2000) have issues with the main printed circuit board leaking current as it ages. The fault causes output valves to overheat from insufficient biasing. Our kits solve this problem with no need to replace the printed circuit board.
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