Thorn 3000 PSU Repair Blog

First of all so as to help understand the operation of the PSU, here’s what I’ve learnt from others and the manual. At switch on The half-wave rectifier W601 produces the 240V rail. As a result, the 30V zener W605 comes into operation, biased by R608. The 30V series regulator transistor VT601 can then come … Continue reading Thorn 3000 PSU Repair Blog