This weekend my wife and I were watching a DVD and suddently we heard a pop and the TV went blank. I replaced the 1.6A fuse and immediately blew another one. I tested all the diodes on the power board by reversing ohmeter leads and found 5 or 6 good ones and 7 bad ones. Of the bad ones, 4 are small and near the fuse so I assume they are a rectifier bridge. Two others are up off the PCB and near a transformer; one of these is larger and the other MUCH larger. The
7th one is small (like the first 4) and right next to a tiny chip.1) Will a good diode ever test bad by this method as a result of still being in the circuit? (I did not lift one leg for any of these tests.)
2) If I remove the 7 diodes that tested bad, will a parts house be able to identify the appropriate replacement from markings on the diode itself?3) If I successfully replace these without damaging any other components, what is the likelyhood that all the other components are ok? High? 50/50? Low?
PS, I know that DVD players are cheap these days but I like DIY projects, plus I hate to throw stuff in the landfill if it can be fixed without too much trouble or expense.
-- Bob Simon remove both "x"s from domain for private replies