Marshall TSL 100 with Runaway Bias Fixed with Dr Tube JCM2000 Stable Bias Mod Kit

Marshall TSL 100 Watt 2 X 12 Combo in for repair. This amp had the dreaded runaway bias caused by the main PC board becoming conductive. You can't get replacement boards for these amps anymore. We fit a Dr Tube bias mod kit to this amp to get it up and running again. This kit will only fix the bias run away. More problems may occur as these boards deteriorate with time. I fitted this kit because the customer asked me to and I he purchased it himself. I won't repair these amps normally. https://www.drtube.com/product/dr-tub...