Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electro-medical.blogspot.com/
http://electronicshelponline.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.
SOURCE: hisense 42inch lcd tv
It sounds like it's the inverter panel which lites the lcd back light.
If it's under warranty, try to replace it, or take it in for svc.
SOURCE: sanyo vizon tv black screen
hiiiiiii here shivam
i want to tell you that that same problem is occuring my computer but now it is fixed
but your problem is of tv don't worry is this is help full to you--
this problem is common on this model. your vertical output circuit has gone bad. but i am sorry to say that a repair cost is to much for a tv this age. a cost would range 100-150. i say invest this into a newer tv. this model was good for 10-12 years and you have got better than that.
good luck :)
let me know if you need more info?
SOURCE: LG 42inch plasma tv suddenly lost picture, now
i have got the same problem with my LG 42PC1D might work for a few days or a few hours no solution as yet
SOURCE: sanyo lcd tv 20"has sound but no picture
0ne of 3 has failed:
(in order of probability):
1. Backlight inverter
2. Power Supply
3. Backlight
Please seek the expertise of an experienced TV repair technician - as
they contain potentially lethal voltages that must be properly
discharged before work can begin.
Thanks! ! ! !
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