Power supply failure

Complete electronics novice. Bose sound dock 10. Switched on smelt some electrical burning, Removed power supply circuit board. Brown gunk on circuit board. around the big capacitors. but spread to other areas as well. Capacitor tops not domed, still flat. Have the capacitors blown or is there another issue? Appreciate any help.

by ace_zap
February 14, 2017

Brown gunk bad news. Probably escaped through cap vents, these prevent caps from going ballistic and making holes in your roof. Supply needs rebuild, and the amp will need attention, the output transistors may have gone into melt-down. Cause may be shorted speaker leads. I would recommend a visit to your local repair shop, it's not a job for a novice. Sorry to be the bearer of bad news. mike

by mikerogerswsm
February 18, 2017

Is it an import from the US? Check the adaptor for voltage rating. UK electrics are 230/240 volts. US imports come with the 110/120 volt adaptor. Plugging the US adaptor into UK mains will burn resistors and blow capacitors.

by mikerogerswsm
February 24, 2017

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