Today @shroprockdoctor Bass amp surgery. Th…

Today @shroprockdoctor Bass amp surgery.
This Ashdown 'Perfect Ten' 30w combo came in with a complaint that it was blowing fuses. Upon inspection both internal board fuses & the externally accessible iec socket fuse were open. All fuses were replaced & mains supply was gently applied via a light bulb current limiter & variac. The first image shows the fuses glowing as supply reached 120vac, the second image showing the current limiting bulb glowing brightly. The next to images show the same test with the two output transistors (both faulty} removed from circuit. No more massive current draw. This little amp is now awaiting tomorrow's post for delivery of the new transistors.

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