I have a old Vizio E550VL with no backlight. I do have a picture when I use a light up to the screen. The fuses on the inverter boards are ok and I have 24volts at those fuses when turned on. Not sure on the next step.
VIZIO E550VL No Backlight
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Re: VIZIO E550VL No Backlight
Next step is to check and find out if you have 24VDC at both ends of the SMD fuse on the inverter boards with ref to the chassis GND or not.
If you do, the you will need to find out if you have BL-ON signal to the inverter board or not.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 E550VL No Backlight
IF all you get is 0.50VDC when the TV is turned on then the main board is not sending the ON/OFF (BL-ON) to turn on the Backlights circuit.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=24809Comment
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Re: VIZIO E550VL No Backlight
Well ordered and tried a kit from Shopjimmy. http://www.shopjimmy.com/vizio-3655-...for-e550vl.htm
But did not help at all.Comment
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Re: VIZIO E550VL No Backlight
Well ordered and tried a kit from Shopjimmy. http://www.shopjimmy.com/vizio-3655-...for-e550vl.htm
But did not help at all.Willing to help but I'm no expert.Comment
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