Cornito
Senior Member
Last Activity: 03-03-2025, 04:11 AM
Joined: 01-12-2024
Location: Calvados
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Try to search with the reference i've shared, Link may have changed... -
I had to place a plastic card between the frame and the LCD Panel.
The plastic card has to be thin as possible, and just sliding the card, you should be able to unglue the LCD-Panel from the frame.
Be sure that the bottom frame is removed first, LCD Panel is covered in the bottom of the screen...Leave a comment:
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Hello easybone, take time to test it during days.
I've this on mine, worked perfectly some days and then I had the issue back, just unplugged and plugged back the connectors solved the issue. And few hours, or restart later, the issue came back.
No way to fix it on my side, broke the panel trying to remove itLeave a comment:
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DENON AVR-3313 / 3313CI Service Manual Version 6
Hello Team,
I was working on a Receiver with no Power, and i found on a website the service manual that I share here.... -
Back on this story, I found for 12$ a PSU on Aliexpress, I bought it and it works.
Unfortunately it's not exactly the same as mine, a compatible model anyway, so i'm not able to measure and compare values to find the issue on mine.
I'll try with a colleague to check the 2 remaining possible component that may have failed => MOSFET and resistor on control pin.
I'll keep you updatedLeave a comment:
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I've completely dismantled the TV to take parts that can be sold. It's a huge mess; everything is glued, so it's quite impossible to fix a backlight issue.
I measured all voltages LED by LED. The LED tester shows 6V directly on the majority of the LEDs, but on some, for a few milliseconds, I can see 9.2V, 15V, or 153V before reaching a steady 6V.
It's as if the internal resistance needs to heat up a bit before becoming steady.
This could be the root cause leading to PSU protection mode.
So based on that I don't think I'll sell any LED s...Leave a comment:
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Ahah why?...Leave a comment:
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Nope I'll not rage quit, I'll disassemble the whole tv to sell parts in order to reduce the price for this lessons.
I'll test led by led to found out the real root cause to confirm hypothesis.Leave a comment:
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Ahah it's my first panel breakage since my first repair.
Ot must happen at one time.
Bought it with backlight default, my pitty but no so much money loss.
I learnt so much....Leave a comment:
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You've done all possible and i thank you for that.
It's my mistake, i was too quick in a corner and broke the panel....Leave a comment:
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So tried to desassemble it to confirm led strips références, and i broke the panel.
End of the storyLeave a comment:
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Yep i've in mind your advice, just want to avoid having the tv open for weeks, it takes a lot of space dissassembled...Leave a comment:
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I've checked that point and i have the signal.
Please find attached the requested pictures [ATTACH=JSON]{"data-align":"none","data-size":"medium","data-attachmentid":3332913}[/ATTACH] [ATTACH=JSON]{"data-align":"none","data-size":"medium","data-attachmentid":3332914}[/ATTACH]I've checked that point and i have the signal.
Please find attached the requested pictures [ATTACH=JSON]{"data-align":"none","data-size":"medium","data-attachmentid":3332913}[/ATTACH]...Leave a comment:
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You mean that the BL ON signal is not sent to the PSU by the motherboard.
BL ON is not so easy to take, but measured it and was present.
I'll take the requested picture tomorrow.
RegardsLeave a comment:
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Nope i was in vacation and i'd like to confirm that it's really led strip issue.
Replacing is not si easy on glued 65" panel, and led strips are not so cheap to take one more risk....Leave a comment:
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Hello guys,
Back from the battlefield, in order to try to find out which LED strip is defective, I've used my LED tester.
Nothing seems really strange; all lines work perfectly with the same voltage requirement.
As with each time I test the LED strips, when I plug the TV back in, everything works well.
It seems like LED strips need to be unlocked before being able to let the PSU start correctly.
Furthermore, I can see the LED flash when the backlight is defective.
So it seems that it's an LED strip defect, even if I'm not able to...Leave a comment:
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Thank you all for the advice.
Combining the advice received, the potential root cause may be a faulty resistor in the protection circuit. This is linked to pin 3 according to the TDS.
[USER="13553"]Davi.p[/USER], the 400V appears very briefly when the backlight starts before being shut down.
I'll check the resitor values and let you know.Davi.p...Leave a comment:
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Hello Capleaker, thank you for the advice.
Do you know where i can find the data sheet with correct level of detail ?
I'll need to change the pull up resistor to correct this protection ?...Leave a comment:
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Finally it seems i found the LED part number: [FONT=Calibri][B][FONT=Arial][COLOR=#202020]GIC65LB100_3030F2.1D_V0.7_20200108[/COLOR][/FONT][/B][/FONT]
[ATTACH=JSON]{"data-align":"none","data-size":"full","title":"image.png","data-attachmentid":3325123}[/ATTACH]
Found these on AliExpress :
[url]https://fr.aliexpress.com/item/1005007372519554.html?spm=a2g0o.productlist.main.3.5ca327dcMS9CTQ&algo_pvid=cde47dda-afda-452e-9a38-e3acb9ef90ae&algo_exp_id=cde47dda-afda-452e-9a38-e3acb9ef90ae-1&pdp_npi=4%40dis%21EUR%2165.76%2153.92%21%21%2170.20%2157.56%21%4021038dfc17231265919687634ef03c%2112000040471611163%21sea%21FR%210%21ABX&curPageLogUid=dtCr2MXNqEpT&utparam-url=scene%3Asearch|query_from%3A[/url]...Leave a comment:
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Thomson 50UD6306 (TCL) Backlight Issue, starts then stops, led changed
Hello Team,
I'm back with another backlight issue that I thought was simple, but it turned out to be more complex than expected.
Let me provide a brief history: The TV was working well, then one day, the backlight started and shut down. I thought I had an LED issue leading to this behavior, so I replaced the LEDs with brand new ones. However, the issue remains the same.
Next, I replaced the electrolytic capacitors attached to the LED power supply, but the results were the same. I then replaced the driver, a OB3365RP, and did it twice due to the same result....
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