Hi,
I get this TV which power up but no LG Logo display or whatever.
Try to "bake" the mainboard at 385 for 10 minutes without success.
So, I order a new mainboard which at first.... has the same problem
since the shipping cost was almost the price of the board itself...
Again, I try to "bake" it 385 for 10 minutes but then, the TV start and everything seems fines! Nices colors, bright screen...
But... here's the problems:
With some flashy colors (blue sky or yellow (like in simpson)) there's 3 bands on the screen on which there's somes glitch with colors. It's appears only for few frames (almost perfect before you see it... then you only check thoses lines... Theses 3 of them. 20 cm thick.
But most of the time, thoses are not visible.
I take picture with a Simpson Episode and pause picture on the right time to get the frame with the maximum "glitch". the next frame, all seems perfect...
Now I'm wondering... does the screen is defective or maybe it's the T-CON or... still the mainboard...
but for the T-Con and Mainboard.. I think that the problem would be more visible ...I think... (like whole screen or half screen problems) no??
But here, most of the time, the picture is perfect (see the first image checking for firmware update)
And even the picture test appear almost perfect except a bunch of red pixels in the yellow bar on the shirt of the player (see football players picture).
I do the service remote hack to access the service mode.
And I do the pattern tests.
Every colors look fine except sometimes, the green have a darker thick 20cm line. Which I could see when there's light blue sky images.
(Full red and full green pictures attached)
It is a LG models 42LV5400, the mainboard I buy was on a 47LV5400.
I adjust in service mode: the models name, screen size... but it's does'nt solve my problem...
So..
what do you think? still mainboard problem, T-CON problems or... defective screen...
Since the mainboard was costly... not sure If it's worth it to try a T-CON...
I get this TV which power up but no LG Logo display or whatever.
Try to "bake" the mainboard at 385 for 10 minutes without success.
So, I order a new mainboard which at first.... has the same problem
since the shipping cost was almost the price of the board itself...
Again, I try to "bake" it 385 for 10 minutes but then, the TV start and everything seems fines! Nices colors, bright screen...
But... here's the problems:
With some flashy colors (blue sky or yellow (like in simpson)) there's 3 bands on the screen on which there's somes glitch with colors. It's appears only for few frames (almost perfect before you see it... then you only check thoses lines... Theses 3 of them. 20 cm thick.
But most of the time, thoses are not visible.
I take picture with a Simpson Episode and pause picture on the right time to get the frame with the maximum "glitch". the next frame, all seems perfect...
Now I'm wondering... does the screen is defective or maybe it's the T-CON or... still the mainboard...
but for the T-Con and Mainboard.. I think that the problem would be more visible ...I think... (like whole screen or half screen problems) no??
But here, most of the time, the picture is perfect (see the first image checking for firmware update)
And even the picture test appear almost perfect except a bunch of red pixels in the yellow bar on the shirt of the player (see football players picture).
I do the service remote hack to access the service mode.
And I do the pattern tests.
Every colors look fine except sometimes, the green have a darker thick 20cm line. Which I could see when there's light blue sky images.
(Full red and full green pictures attached)
It is a LG models 42LV5400, the mainboard I buy was on a 47LV5400.
I adjust in service mode: the models name, screen size... but it's does'nt solve my problem...
So..
what do you think? still mainboard problem, T-CON problems or... defective screen...
Since the mainboard was costly... not sure If it's worth it to try a T-CON...
Attached Files
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