Observe the machine, power indicator, press the power button light is put out. Standby measure 68 v mains standby button the power output, in the protection state. Because the machine protection circuit a lot, one by one to find a little slow. Then remove the standby tube Q907 directly, protect the SCR Q914 let power independently, operation load and the main power with 100 w bulb 100 v output is normal. Restoring line load boot hear high pressure come, see a filament is bright, is that there is no brightness. Then slowly adjust the blue gun accelerometers, blue gun were observed on line. Certificate issue is present to scan. Measuring LA7838 power supply is 0. Insurance E094 burn out. In integrated block LA7838 and insurance. Switch on the TV work.5X8service manual download site