 Posted: Mon Jun 28, 2010 8:42 am Post subject: |
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| Thanks,
just like what i suspected. A good argument not to repair that set! |
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| Posted: Fri Jun 25, 2010 10:01 pm Post subject: Re: Sharp tv 70DS-03SN, hiccuping PSU |
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Flyback Trafo ----> H.V. DST BAD. Anyway Crappy Chassis !!! (when you start to fix a thing another is going bad) |
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| Posted: Fri Jun 25, 2010 8:57 pm Post subject: Sharp tv 70DS-03SN, hiccuping PSU |
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| A tv as above has hiccuping power supply. For each pulse, there is a flashover across R820 (1K0 SMD resistor, probably in beam current limiting circuitry). R613 (2K2 1W resistor in S-correction network at horizontal deflection coils) has signs of overheating and has changed value to about 12 kohm. All semiconductors in horizontal output seem to be ok.
Any ideas? |
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