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viking6791 replied to How to perform panel test on Samsung UE70TU7020K

in Troubleshooting TVs and Video Sources

03-28-2024, 02:50 AM
Hello My friend, it is not my wisdom, it is the result of the work of everyone in this forum, I just paid close attention to these discussions and learned.
I am back with some information.

I received the following Samsung model for repair:
UE50AU8072
Mainboard BN41-02844D
Panel CY-SA050HGPY1V

The device was in boot loop without Tizen logo, the motherboard only has a ribbon that connects to the panel and that bridge between the two parts of the panel.
I did the panel test with only the left side connected and noticed those stripes on the image....

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viking6791 replied to Hp Sure Start Recovery boot loop on HP Elitebook 840 G5

in BIOS Requests ONLY!

03-27-2024, 10:49 AM
Thank you.
It is almost the same, I did not write it in the SPI memory because I will try to modify certain portions of the memory until this message disappears and in addition it is for another platform (mine is Q78).
Maybe someone has a solution! 🤔

...

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viking6791 replied to Hp Sure Start Recovery boot loop on HP Elitebook 840 G5

in BIOS Requests ONLY!

03-26-2024, 03:36 PM
This is my bios backup....

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viking6791 replied to Hp Sure Start Recovery boot loop on HP Elitebook 840 G5

in BIOS Requests ONLY!

03-26-2024, 12:49 PM
I'm sorry, I hope that now I will write all the information.
HP Elitebook 840 G5
ProID 2FA66AV
Build ID 17WWCSAT601
SN 5CG82334TL
Feature Byte: 3X 76j6S6b7B7H7M7Q7W7m7saBaEapaqauawbUdpdqgdhKhk.h4
CT: PGWHQ00WBAQ1E2
Mainboard model: COMPUTRO-6050A2945601-MB-A01(A1)

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viking6791 started a topic Hp Sure Start Recovery boot loop on HP Elitebook 840 G5

in BIOS Requests ONLY!

03-26-2024, 01:46 AM
Hp Sure Start Recovery boot loop on HP Elitebook 840 G5

HP Elitebook 840 G5
ProID 2FA66AV
Build ID 17WWCSAT601

Has anyone faced such a situation in the past with laptops that have integrated HP Sure Protect.
I tried to disable it from the bios but I don't have access, to rewrite the bios with a USB disk, it also doesn't work to enter the test menu with the F2 key, the same thing.
I found a video clip on YT where the person in question edits the bios file saved from an HP 450 G7, but I don't understand most of the explanations because they are in Arabic.
Can someone help me with some information?
...

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viking6791 replied to How to perform panel test on Samsung UE70TU7020K

in Troubleshooting TVs and Video Sources

03-20-2024, 03:37 PM
I will post here to, and I will send you an PM also.

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viking6791 replied to How to perform panel test on Samsung UE70TU7020K

in Troubleshooting TVs and Video Sources

03-20-2024, 03:14 PM
In the last 2 months I repaired several devices from the MU, TU and Qled series, all of them were in boot loop with or without the Tizen logo, but I was too lazy or selfish and didn't take pictures of what I did, now I'm sorry because I could help more easily with the respective images.
But now I received for repair a Samsung model 40NU7100 I think, single chassis, which has vertical stripes and after 30-60 minutes it enters the boot loop. I will take pictures of the defect and the steps followed for troubleshooting.

Best regards!

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viking6791 replied to How to perform panel test on Samsung UE70TU7020K

in Troubleshooting TVs and Video Sources

03-20-2024, 02:55 PM
You will find these signals on both sides of the display, if you do the jumper test at Tcon, disconnect the ribbon from each side one by one and you will have an image only on the side without a defect. Usually with this type of display as in the attached photo, I check with the measuring device on the resistance field those data and voltage lines one by one, the resistance between any line must not be less than hundreds of k ohms. The test can also be done in tension, but there are no values given by the manufacturer for this, everything depends on how much experience you have and intuition....

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viking6791 replied to samsung un43nu7100 BN94-13191C/BN41-02635A boot loop problem even with tcon jumper

in Troubleshooting TVs and Video Sources

03-20-2024, 02:20 PM
Take a picture of the motherboard and post it here. You have to identify which part of the display has problems, but that's after you post the picture on the forum! It is usually a high consumption on the VGH voltage.

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viking6791 replied to How to perform panel test on Samsung UE70TU7020K

in Troubleshooting TVs and Video Sources

03-20-2024, 02:13 PM
Hi learnmore, on this forum there are many discussions about the TV series Samsung TU, Qled and others that have problems with the display.
Take a photo of the two boards where the two ribbons are connected and post them here. I will guide you what to do after I see the two pictures.

Regards!

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viking6791 replied to samsung qe55q60rat logo loop

in Troubleshooting TVs and Video Sources

03-18-2024, 09:39 PM
The panel has problems, in some cases I managed to make it work (the devices have been working for two months without problems), but it is not a long-term solution. Read the attached link where the given solution is for bootloop [url]https://www.badcaps.net/forum/troubleshooting-hardware-devices-and-electronics-theory/troubleshooting-tvs-and-video-sources/3223822-samsung-qn50q60t-lines-on-screen[/url]
Post also mainboard photos and and panel board with COF.https://The panel has problems, in s...problems), but

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viking6791 replied to Samsung QE50Q67T bootloop problem

in Troubleshooting TVs and Video Sources

03-18-2024, 09:05 PM
The panel has problems, in some cases I managed to make it work (the devices have been working for two months without problems), but it is not a long-term solution. Read the attached link where the given solution is for bootloop [url]https://www.badcaps.net/forum/troubleshooting-hardware-devices-and-electronics-theory/troubleshooting-tvs-and-video-sources/3223822-samsung-qn50q60t-lines-on-screen[/url]https://The panel has problems, in s...link where the...

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viking6791 replied to How to perform panel test on Samsung UE70TU7020K

in Troubleshooting TVs and Video Sources

03-18-2024, 08:56 PM
See atached picture or folow this link [url]https://www.badcaps.net/forum/troubleshooting-hardware-devices-and-electronics-theory/troubleshooting-tvs-and-video-sources/3223822-samsung-qn50q60t-lines-on-screen[/url]https://See atached picture or folow...n-screen[/url]...

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viking6791 replied to Strong SRT 43UA6203 emmc file

in Troubleshooting TVs and Video Sources

03-14-2024, 11:54 AM
The device works now. Thanks again!

...

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viking6791 replied to Strong SRT 43UA6203 emmc file

in Troubleshooting TVs and Video Sources

03-01-2024, 02:42 AM
Thanks, I downloaded. I will test later....

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viking6791 replied to Strong SRT 43UA6203 emmc file

in Troubleshooting TVs and Video Sources

02-29-2024, 04:06 AM
Yes I can !...

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viking6791 replied to Strong SRT 43UA6203 emmc file

in Troubleshooting TVs and Video Sources

02-29-2024, 02:31 AM
I think yes, the mainboard are similar. Thanks!...

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viking6791 replied to Strong SRT 43UA6203 emmc file

in Troubleshooting TVs and Video Sources

02-27-2024, 01:47 PM
Closed ticket, some Russian (and Romanian) web pages have this file, but what money for it. Thank you for your help.

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viking6791 replied to Samsung QN50Q60t lines on screen

in Troubleshooting TVs and Video Sources

02-27-2024, 01:32 PM
Most technicians who repair TVs do not want to reveal these small discoveries because they imagine that some person enters such a forum and everything falls apart and he loses his job! It's a false approach, I learned everything thanks to some people who passed the information on and I will pass it on because I have to do this, like, send a file and I'll help you modify that file so it works for you device. I learned to repair from books published on paper, not from forums.

Be a teacher and teach others to be at the same level as you!

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viking6791 replied to Samsung QN50Q60t lines on screen

in Troubleshooting TVs and Video Sources

02-27-2024, 01:14 PM
(My question is: how do i bridge these two test points on the main board? a wire of some sort between the two points just touching the board? sorry if that is an obvious question but any info here would be greatly appreciated!)
You must use a wire to bridge this two points! The next picture is more relevant!

1 Photo

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