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diode problems
I have a motorola 21T16 that has 2 diodes instead of selenium rectifiers. They are in a voltage doubler set-up. My set will work correctly for a few minutes than the picture shrinks down about half size and stay there. the voltages from the diodes does not stay consistent.from the first one it will check at about 125 or so(DC). but after the set is not working right I can't seem to get my digital voltmeter to check it. It seems to be only AC from it.Also the first diode runs very warm, the second one is cool. Does this tell me I need to replace them or is something else in the set wrong? If it is the diodes, and I put new in, which way does the cathode band point in the circuit? Thanks, Doug.
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11-15-2008, 04:13 PM
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