Vizio E190VA took lightning strike or power surge. No video nor audio although one half the power on indicator does illuminate. Readings on power supply board are acceptable for the listed voltages, however pin 1 and o/f dim pins show zero volts. All diodes on the board are within proper range. No caps appear bulged or blown. Can anyone tell me where to find specs for the proper voltages on pin 1 and o/f dim pin, if there is supposed to be voltage to those? Any help on this voltage question, and general help in diagnosis on this TV, would be greatly appreciated.
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Re: VIZIO E190VA No video/audio half the power light is illuminated
ON/OFF = BL-ON, >2V = ON, <1V = OFF
DIM: it will vary with backlights level setting, typical <1 V min backlights, 5V = max backlights.
Those two control signals are controlled by the Logic board.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 E190VA No video/audio half the power light is illuminated
Thanks. Makes sense since the remaining voltages on the power board are within range. Interesting that the power board survived a power surge but the logic board did not. May well have been the cable tv that took the hit, but those are usually well grounded to keep their equipment safe. But, I do remember the first rules of electronics: just about anything can happen with electrons and nothing is as simple as one may think! Logic board is out of stock, so I need to diagnose the problem on the logic board. Any idea where I can find a schematic with voltage readings? Rebuild kit (only the EEPROMs) is available. So, if I can find the readings for the logic board I can possibly diagnose the problem and repair. Again thanks for the help, and hopefully future help.
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I have a Vizio D32f-E1 LCD TV that does NOT have a TCON board.
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Hey everyone!
I've gotten this TV for free, neither have it seen a TV repair man, neither have it been opened before.
This post describes my entire troubleshooting process of this TV.
When I turn it on using the ON/OFF switch at the side of the TV, the light rapidly flashes green, then it stays on, but it does not react to any of the remote buttons, side buttons, and doesn't play audio.
I've taken the unit apart, and I've started to check some voltages:
- On the P11 connector, there is 15V DC only for a brief moment, then it goes
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