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TV AC adapter gone bad

The ac adapter quit after 3 quick blinks of the power. So I bought a new one ($106). Not shy, I opened the old one just to see and before long I had the problem traced to a resistor. The fuse didn't go bad but this resistor soldered to a aluminum plate won't give me any reading. So I want to buy a new resistor and see if that fixes the problem. Problem is, no one seems to agree on the size of said resistor. It is striped brown black blue silver green. It is generally brown and 3/8" long. I opened the new adapter and the resistor there (much smaller) was brown black blue gold space green. I think a 10mohm resistor with 5% tolerance will do the trick. But that fifth stripe is troublesome. Is the green stripe some indicator of reliability? I can't find a schematic for this anywhere. Sharp UADP-0243CEPZ

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I just repaired one with the same model number. The 10 meg ohm resister isn't the problem because it's from the line in to the metal of the heat sink or something like that and any 10 meg ohm will work. The problem is no output of 13 volts. In my case the "cure" was replace the two 560mfd @35 volts capacitors mounted on the other end (opposite the power in cord) they were both open and there was a black oil like leakage from them on the p w board underneath them. You will have to remove the metal that almost hides them. Unsolder the transistors mounted on it and remove it as an assembly. Be sure to clean it up with lacquer thinner and observe the polarity of the capacitors.
PS I have been repairing TV for more then 50 years and I don't no what the green stripe is for either but it isn't of any importance in this case.
Kirk's TV Evart MI

Posted on Nov 08, 2009

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