Panasonic TC-25V42G King color TV power indicator light, but no grating, fault free repair method of sound |
| Time£º2014-06-20 09:04:06 Source£ºNetwork Author£ºUnknown Clicks£º1240 |
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T5Wservice manual download site
3. When Q802 is standby to IC804 three-terminal voltage regulator power supply triode, the tube when the standby conduction, the television as a normal work. When Q802 breakdown or its pressure is insufficient, switching power supply + B end only a few volts output voltage, then present 3 without the TV. When Q802 damage, usable A940 substitution. T5Wservice manual download site
4. D820 is to protect the zener diode (36 v voltage regulator tube), the model for MA4360 - L. When D820 breakdown or insufficient pressure, also can appear the phenomenon of difficult to start the switch power supply. Without the same model change, available TV tuning voltage with voltage regulator block mu PC574 substitution. T5Wservice manual download site
5. In the process of maintenance in order to avoid burning repeatedly STR - S6708 thick film blocks or other elements, can be in 220 v mains input through a 200 w bulb, with 60 w bulb at the same time make dummy load + B, so it is not easy to burn out in the process of debugging STR - S6708. T5Wservice manual download site
In addition, sometimes + B termination dummy load switch power supply switch power supply after work, and after recovery circuit television can't work normally, this is usually caused by a lack of new change Q804 beta.T5Wservice manual download site
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