Can someone tell me which board has failed, power or main. Its a vizio m551d-a2, ver. LWJJOJBP2202120. There is no sign of life. No standby light, "nothing" Voltages on connector to main board are. Pin 1-5vsb=5.10v,pin 2-5vsb=5.10v, pin 3-ac off det.=3.27v, pin 4-pson=3.10v, 5&6 GND=0v, pin 7-5v nc=0v, pin 8-5v nc=0v, 9&10-GND=0v, pin 11-reg 12v=0v, pin12-reg 12v=0v, don't know what pin 13 and 15 are labeled but 13 reads 0v, 15 reads .61v, The connector just above is labeled reg 12v and reads 0v on both pins. Across the big capacitor reads 389.6v. No change pressing the power button. Also take a look at the pic of the transformer, looks to me that it got hot or is this normal. Thanks for any help.
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VIZIO M551D-A2 completely dead
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Re: VIZIO M551D-A2 completely dead
Right now he PS-ON is present so the PFC Voltage booster is working, 389.6V PFC Voltage is present, but the switched 12V, 24V power supply section is not running.
Is this the exact same board as yours?
https://www.shopjimmy.com/vizio-56-0...led-board.htm#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
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Re: VIZIO M551D-A2 completely dead
Thanks for the follow-up.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
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