Hi turned my T220HD on this morning only to find it comes on for like 2 or 3 seconds then screen gos black the front LED stays on constantly and makes a strange noise before screen go's off. Anyhelp would be greatly appreciated?
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T220HD flashes off after 2 seconds.
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Re: T220HD flashes off after 2 seconds.
I had one of these that the inverter transformer went on... But it could be the usual electrolytic capacitors causing your problem.. You'll need to take good quality pictures of the boards back and front, and post them here.. Then we can help you diagnose the fault..
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Re: T220HD flashes off after 2 seconds.
If the inverter section works fine then it could be that one of the CFL tubes is dead or going bad or one of the wires is no longer soldered properly to the cfl tube.
Checking the ends of the cfl lamps is a bit hard, sometimes you have to remove the metal panel, and you have to gently remove the silicone jacket from the ends and sometimes just this step alone makes the wires break off from the lamp..
Ideally you would find use a second set of tubes and replace existing connectors with your test tubes and if your test tubes light up and monitor works showing pictures then you know the lamps inside are bad (or the connection to them)
another forum member has some nice pictures of how the lamps are inside
http://s807.photobucket.com/user/bud...cklight%20lamp
and here's a way to make your own test lamp from old cfl lamps:
http://s807.photobucket.com/user/bud...ng%20old%20CFL
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Re: T220HD flashes off after 2 seconds.
Please upload the pictures of your 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
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