|
Have you checked the mains fuse? Does this set have physical power switch ahead of the power supply? Check that you have continuity from the mains plug/connector to the connector on the power supply board.
If the fuse is open check for shorts as mentioned above. If you don't find any shorts you may have gotten lucky and a surge may have just taken out the fuse. Replace the fuse and try it. If the fuse blows again you've missed something. If the fuse holds, but you still have no power look for open resistors, PTCs, etc. Essentially check that you have continuity from mains input, though the filtering to the rectifier.
At this point you could get a replacement power supply board if you didn't want to continue trying to diagnose/repair the existing board.
|