binky_bass Posted January 16, 2019 Share Posted January 16, 2019 Hi all, I've just bought a TC Electronic BG250 combo with a fault, the combo works perfectly until you crank it past say 1/4 volume, at that point you here a little pop and the sound cuts out entirely, with the 2 left And 2 right LEDs on the on board tuner then flashing. Anyone know what the issue might be? I've spoken to TC Electronic who passed me onto EMS in Southend who said it might be a power supply issue or an amp board issue and quoted circa £100 to repair it. I don't really want to pay that much so if anyone has any guidance as to how I might be able to self-fix I'd be very grateful! Russ. Quote Link to comment Share on other sites More sharing options...
Mottlefeeder Posted January 16, 2019 Share Posted January 16, 2019 Assuming it is a class D amplifier and a switch-mode power supply, there is not much you can do without a circuit diagram, test gear and the skills to use them. You could take the lid off and check for connectors not seated correctly on printed circuit boards, but I would only recommend that after letting the unit sit unused for several days. The power supply capacitors may be charged to 200-300 Volts and that will take time to leak away. Ashdown charged £80 for a replacement Amp+Power supply board after I blew mine up connecting to a faulty generator, so it may be that is the going rate for swapping out the faulty unit. Quote Link to comment Share on other sites More sharing options...
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