Re: LG 42LV5400 problems with vertical band (20cm) with only somes colors
so,
I try to gently push every tab bonds (like in the video) but nothing change in the screen.
Maybe it still this sh**y motherboard...
or the Tab IC or driver IC like CapLeaker said..
the test picture in firmware (football player) show a little glitch also in the same vertical block part.
All the sources hdmi, smarttv has the glitch . Try a Android box and a Roku also with a picture on a usb key (previous image cyan, yellow and blue) . It all shows...
gtremblay
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Last Activity: 12-17-2024, 07:14 PM
Joined: 12-19-2018
Location: Quebec,QC
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Re: LG 42LV5400 problems with vertical band (20cm) with only somes colors
Yes, this tv is not for resale, it's more "just for fun" and learn. so I'll try.
Thanks for the video!
Because the trouble is hard to see, I made an image with the colors I've got problems. Now we see every vertical block at once
It will be easier to see if it's works or not
I keep you updated when I'll try.
Thank you!...Last edited by gtremblay; 08-07-2019, 05:53 PM.Leave a comment:
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Re: LG 42LV5400 problems with vertical band (20cm) with only somes colors
... well... I found a service manual for another LG in which they show somes of the potential problems.
and
I think you're right CapLeaker...
The pictures in the manual for a "TAB IC Defect" is exactly what I have on my screen...
and it said : un-repairable cases.. exchange module..
so the lcd panel is defective and there's nothing to do it seems...
thank you all for your help...
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Re: LG 55LV5500-UA.AUSYLJR - Does not turn on, no sound, no picture
well... don't know if related but I notice other problems.. so I start a new thread
[url]https://www.badcaps.net/forum/showthread.php?t=78588[/url]Re: LG 55LV5500-UA.AUSYLJR - Does no...?t=78588[/url]Leave a comment:
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LG 42LV5400 problems with vertical band (20cm) with only somes colors
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...Last edited by gtremblay; 08-05-2019, 05:54 PM. -
Re: LG 55LV5500-UA.AUSYLJR - Does not turn on, no sound, no picture
After doing all the tests with the power supply (via the service manual).
I decide to put the new board received (used) in the oven at 385 for 10 min.
guest what...
I WORKED!!! hahah
with the last board (original one), I try the same things about 5-6 times wihout success...
but this times with the new board, one times and the TV start again!
model 42LV5400
power supply eay62169801
service manual for the power supply board ...Leave a comment:
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Re: LG 55LV5500-UA.AUSYLJR - Does not turn on, no sound, no picture
okay, thank you for the quick answer.
Since shipping cost is more than the motherboard itself, I'll keep it and do more tests... nothing to loose at this point
Thank you for the advice, I'll check for another board at the same time.
If I have any success, I let you know!Leave a comment:
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Re: LG 55LV5500-UA.AUSYLJR - Does not turn on, no sound, no picture
Hi, I know I'm late for this post
I read this post since have got a 42LV5400 tv which have the exact sames symptoms...
a try few things:
-testings the power supply :
SMPS TEST 1: Force Power Supply On.
SMPS TEST 2: Force the Backlights On.
I do the tests with the power supply and everything seems "fine" except no drv-on voltage and only 36 volt on LED.
But with the test 2 , the led light on and stay on. (44 volt when on on pin 1 and 13...Leave a comment:
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