Recently my Sony Blueray player (BDP S-370) got busted due to high voltage. On opening the player, I found a faulty high voltage capacitor (400V, 100uF) in the power supply board, which I replaced with a new one. And before putting the board back into the unit, I checked the output voltages with a digital multimeter and found them to be higher than the rated values. The +12V output when tested with DMM shows +16.5V, which slowly reduces and stabilises around+14.6 V. The -6V output shows fluctuating values between -7.24V and -7.34V, while the +5.8V output fluctuates between +5.47V and 5.77V. My input voltage is 240V AC, and the output at the bridge rectifier is 336V DC, as tested using a DMM. I don't have much background in electronics and would appreciate your help in identifying any further faulty components in the power supply board.
For reference the image of the power supply board is attached. It is a Sony APS-257 Board with part number 1-474-194-11. I could not find a schematic for the board in the internet.
Thanks for your help.
For reference the image of the power supply board is attached. It is a Sony APS-257 Board with part number 1-474-194-11. I could not find a schematic for the board in the internet.
Thanks for your help.
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