Panasonic TC-29GF10R color TV after three, but in the press the power switch moment to hear and relay "clicks" movement, the standby indicator HENGFA red fault repair method |
| Time£º2014-06-30 08:33:47 Source£ºNetwork Author£ºUnknown Clicks£º1256 |
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Drqservice manual download site
Drqservice manual download site
summary Due to the over voltage protection monitoring stabilivolt D820 leakage damage, make Q803 conduction, due to the base potential rise in emitter voltage rises, the D822, R846 IC801 (4) feet potential rise, which in turn cause the switch power oscillation circuit for IC801 over-current protection circuit on priority control and stop working, and to produce fault phenomenon in this case. D820 breakdown short circuit or R818 membrane open circuit, not only will the protection, over-current protection circuit of switch power supply as well as for D821 zener conduction, the photoelectric coupler D819 equivalent conduction, cause Q852 cut-off, relay RL801 after boot is instantaneous and then release and produce action "click" sound.Drqservice manual download site
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