JCM2000 Marshall Stable Bias Mod Kits

JCM2000 Marshall Stable Bias Mod Kits  to fix overheating amps. Marshall TSL and DSL series amps  ( JCM2000) are known to have issues with the main printed circuit board having leakage of current as it ages. The fault is seen as the output valves overheating due to insufficent biasing. These kits solve this problem without replacing the printed circuit board.