Panasonic TC - 33 gf85r, TC - 33 gf85g, TC - 29 gf85r color TV sound is normal, but very dark screen grating; Sometimes accompanied by automatic searching programs don't turn over; Field image compres -Service Manual Download|Circuit Download|Download Drawings|schematic download|route map download|free download user manual

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Panasonic TC - 33 gf85r, TC - 33 gf85g, TC - 29 gf85r color TV sound is normal, but very dark screen grating; Sometimes accompanied by automatic searching programs don't turn over; Field image compres

Time：2014-05-28 09:58:14 Source：Network Author：Unknown Clicks：1158

The aircraft is a bus control, complex circuit, a three-terminal voltage regulator integrated through inspection is part of the power supply block IC805 (AN7809 - LB) input R842 resistor value increases, make IC805 input voltage drop is about 8 v, the output voltage drop caused by about 7 v. 8842 icon resistance is 4.7 Ω / 5 w (some figure values is 2.7 Ω / 3 w), a failure occurs, R842 turns 10 to 20 European, the greater the resistance fault. With a resistance change after the same specification, troubleshooting. R842 growing value analysis is the resistor fever caused by a serious, long-term since R842 below has become yellow black printing plate. KzXservice manual download site
KzXservice manual download site
IC805 voltage output after 9 v voltage for chroma decoding, line scan a integrated block IC601 (TAl215AN) power supply, also for the baseband delay line 1 h IC603 (TA8772AN) power supply, due to its power supply voltage is too low, can't work normally, resulting in failure of the class.KzXservice manual download site