1971 Hiwatt SE4122 4×12 guitar speaker cabinet 100w cab with original vintage fane drivers

This one is selling. £650

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Blackstar Stage 60 guts

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Clean channel not working. Still doesn’t with tested good valves in, something else going on, but not too easy to investigate stuff with loads of surface mount and SS shenanigans.

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Big heat sink with presumably voltage regulators on, heat right next to the filter caps seems a terrible idea. Strong theme of this amp, sent it off without a fix as it was nothing readily apparent.

Matamp Quasar 500 and Laney VH100R guts

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Showed up set to bridge mode, had to open it and find the switch. Turns out not on the side with the diagram. Do spot a toasty looking resistor bottom left though. Still tested right, luckily as it was missing a stripe.

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Right side this time, showing the classic K135 and J50 mosfets. Hand marked bridge/stereo switch on the pcb to the left.

Other thing:

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Laney VH100R, made a bunch of noises and blew a fuse.

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A shorted power valve, a miles out of spec (like, measured a couple of meg rather than open) grid resistor. Suspect someone tried a ‘fix’ by swapping positions before selling this as ‘working’. Couple of dud pres too.