Have a Vizio VL470M, Upon plug in, VIZIO light is yellow, no response from on button on TV. All voltages coming out of PS are good. All voltage checks on Main out are good except "inv" on is 0v. (orange wire). Any ideas?
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Re: Vizio VL470M
Inv_on is generated by Main board.
How about other control signal like 'Dim'?
We also need the pictures of the whole backside of the TV showing all the boards.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809 -
Re: Vizio VL470M
After checking U14 (EEPROM) and finding it OK, I put the main PCB on my hot plate at 350* for about 10 min to reflow U11. Put board back in and TV fired right up! Go figure!!!!
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