Panasonic TC-2189 TV does not receive the TV signal, but the AV normal fault repair method -Service Manual Download|Circuit Download|Download Drawings|schematic download|route map download|free download user manual

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Panasonic TC-2189 TV does not receive the TV signal, but the AV normal fault repair method

Time：2014-06-17 09:19:07 Source：Network Author：Unknown Clicks：1114

(1) the TA7680 attending foot external high-frequency AGC delay fine-tuning resistance RPLLl Ω (5 k) as the old machine vulnerable components. Attending the foot voltage regulating RP111 test should be 0 v to 12 v linear change, if discover have voltage mutation or abnormal, explain RP111 exist the problems, should be replaced. RSKservice manual download site
RSKservice manual download site
(2) pick up on 12 v put AGC points higher compressive resistance R116 (39 k Ω) may also exist the problems, to measure the resistance. RSKservice manual download site
RSKservice manual download site
RSKservice manual download site
(3) the high frequency short circuit, AGC end inside and outside element can be peripheral circuit to cut off the end, test voltage or resistance.RSKservice manual download site