bubugian
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Jul 21, 2015, 10:56 PM
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BLACK SCREEN on THOMSON 42WM03L (LG42V5_YSUS, MPF7407, LG42V5_Z))
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Hi all,
my old plasma TV (it is a gift from my loved dad) stopped work last night.
When I turn it on, for the first 2/3 second it is possible to glimpse a very disturbed and fragmented "NO SIGNAL" icon only in the upper right side of the screen. After 2/3 seconds, panel became black. If I turn tv off and on, I cannot see anything more (seems like a capacitor problem).
I saw that two big capacitor (SAMWHA, 250V, 680uF) were deformed. So I changed them.
Unfortunately, this change did not solve the problem. Boards seems to be ok (no sign of overheating, no other capacitor visually damaged).
Please, someone could help me proceeding debug ?
I'd like to understand which are the test that I can do to identify the fault.. (is it in power supply or in a sustain board or elsewhere..?)
Thanks very much!
(This post was edited by bubugian on Jul 22, 2015, 6:19 AM)
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