Question about Vizio L37 Television
Yes after to the fuse you must have a reading of 120vac if none the fuse get busted. if the 120v is present then it will goes through the rectifier bridge diode and primary capacitor of the power supply board to have an stand by voltage at the power supply board. when you press the power button it will send signal voltage coming from the main board to turn on the power supply board. the you will need to get an output voltage at the power supply board of 5v dc, 12v-16vdc and 24v to turn on the all the circuit, the main board sound amplifier and the inverter board for screen back light.if you can get those supply the tv unit will not turn on.
Posted on Nov 09, 2012
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Posted on Jan 02, 2017
SOURCE: LCD TV blows fuses
Since the main fuse is being effected, it suggests that there is a major problem in the power supply section. I would be looking for a shorted rectifier diode. If you have any experience with electronics, you may be able to locate this problem. If hte set is still in warranty, return it for warranty service. If not, try loking for burned components etc.
Posted on Jul 22, 2008
It will only be a standard power supply fault to repair. Any good engineer, with a circuit, should be able to repair it.
Posted on Mar 28, 2011
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