I'm hoping someone here can help me with my problem, I have a vizio vw42l hdtv10a and I get no picture or sound out of the tv. I took off the back cover and seen the back lights are coming on but again no picture or sound. I can turn on and off the tv by using the panel buttons but thats it no menu channel up/down etc.. I have looked over several other threads involving similar problems and this is what I have replaced on the mainboard so far....
Mouser #: 621-AP1117E18G-13
Mfr. #: AP1117E18G-13
Desc.: Low Dropout (LDO) Regulators LDO BI 1.0A
used for u9
Mouser #: 511-LD1117ASTR
Mfr. #: LD1117ASTR
Desc.: Low Dropout (LDO) Regulators LOW DROP
FIXED REG
used on u8, u2, u33, u7
Mouser #: 667-EEU-FM1E221
Mfr. #: EEU-FM1E221
Desc.: Aluminum Electrolytic Capacitors - Leaded
220UF 25V ELECT FM RADIAL
used on ce75, ce8, ce7, ce14, ce16, ce91, ce2, ce1, ce5, ce6, ce23, ce11, ce27, ce18, ce25, ce26, ce20
Mouser #: 667-EEU-FR1V471
Mfr. #: EEU-FR1V471
Desc.: Aluminum Electrolytic Capacitors - Leaded
35VDC 470uF 10x16mm LS5mm
used on the two inverter boards,
I also followed the repair manual for this tv on the dc to dc converter trouble shooting guide (see attachment) after replacing all the parts listed above all voltage readings came out correctly as stated in the repair manual. and something else I noticed before doing repairs on the master inverter board there was a blue led on the pcb that would come on then go off, but after doing repairs it stays on so I guess I did something good just not good enough. thanks in advance for any help on this.
Mouser #: 621-AP1117E18G-13
Mfr. #: AP1117E18G-13
Desc.: Low Dropout (LDO) Regulators LDO BI 1.0A
used for u9
Mouser #: 511-LD1117ASTR
Mfr. #: LD1117ASTR
Desc.: Low Dropout (LDO) Regulators LOW DROP
FIXED REG
used on u8, u2, u33, u7
Mouser #: 667-EEU-FM1E221
Mfr. #: EEU-FM1E221
Desc.: Aluminum Electrolytic Capacitors - Leaded
220UF 25V ELECT FM RADIAL
used on ce75, ce8, ce7, ce14, ce16, ce91, ce2, ce1, ce5, ce6, ce23, ce11, ce27, ce18, ce25, ce26, ce20
Mouser #: 667-EEU-FR1V471
Mfr. #: EEU-FR1V471
Desc.: Aluminum Electrolytic Capacitors - Leaded
35VDC 470uF 10x16mm LS5mm
used on the two inverter boards,
I also followed the repair manual for this tv on the dc to dc converter trouble shooting guide (see attachment) after replacing all the parts listed above all voltage readings came out correctly as stated in the repair manual. and something else I noticed before doing repairs on the master inverter board there was a blue led on the pcb that would come on then go off, but after doing repairs it stays on so I guess I did something good just not good enough. thanks in advance for any help on this.
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