alltvrepairs
Senior Member
Last Activity: 09-30-2024, 04:41 AM
Joined: 01-07-2014
Location: Malta
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Have tried that already but it seems that heat doesn't change the symptom. After few hrs the set is very hot inside due to its old design.... -
Old Techwood 32722HD Osd pixels on screen
Hi,
an old friend of mine wants me to repair this old (not worth it) model. Found standby only. Changed couple of swallen caps 1000uf 16v, 25v in power supply and set is on.
however noticed many digital pixel noise probably originating from OSD. When osd gies off they stay.
Am thinking a couple of caps near cpu.might be the culprit. But cannot afford much time on it anymore as this is almost a free repair.
Any ideas welcome. Pics attached. -
UE55NU7170 Power Supply Circuit required BN4400932B
Hi,
Anyone has a circuit diagram for this Samsung Power supply pls?
QP801CS shorted. Blu Cap is not cracked.
[ATTACH=JSON]{"data-align":"none","data-size":"full","title":"image.png","data-attachmentid":3265690}[/ATTACH]Hi,
Anyone has a circuit diagram for this Samsung Power supply pls?
QP801CS shorted. Blu Cap is not cracked.
[ATTACH=JSON]{"data-align":"none","data-size":"full","title":"image... -
I have tried heating and freezing CPU / RAM / DC - DC convertors and all around board including HDMI chips. But could not conclude if the heat / freeze is changing the duration
So changing the CPU is a wild guess and I think is not worth the time and cost and risk after all.
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Hi again,
CPU is SEMS31 BGA
Am not 100% if CPU failure as tried to heat it up and didn't conclude that with extra heat trips quicker.
I would need a GPU and a stencil. Any recommendations for a good quality but not too expensive solder and cleaner?
[ATTACH=JSON]{"data-align":"none","data-size":"full","title":"image.png","data-attachmentid":3239751}[/ATTACH]
Thanks!Hi again,
CPU is SEMS31 BGA
Am not 100% if CPU failure as...Leave a comment:
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BOTH TV FIXED at last. Special tks to Lotas for sending me a good file to start with and all others contributing here.
Apparently I have been quite unlucky as the first 3 files downloaded contained errors and I had the impression I have bricked both sets.
The Graetz firmware worked immediattely.
Applied same firmware on Smarttech Tv, Tv revived but incorrect colours/bit rate due to different screen.
Have downloaded 5 more firmwares and finally found 1 that worked and had good picture, however required a Samsung Remote. Managed to Export the RC...Leave a comment:
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Good news! Tks LOTAS.
With this firmware I have managed to revive the Graetz TV and seems all working fine.
[URL=filedata/fetch?id=3236314&d=1710588680][ATTACH=JSON]{"alt":"Click image for larger version Name:\timage.png Views:\t0 Size:\t755.1 KB ID:\t3236314","data-align":"none","data-attachmentid":"3236314","data-size":"small"}[/ATTACH][/URL]
The Smartec - wrong display but everything seems to work.
So am now looking for a matching firmware.
[ATTACH=JSON]{"alt":"Click...Last edited by alltvrepairs; 03-16-2024, 06:00 AM.Leave a comment:
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I have updated with only 1 file CtvUpgrade.bin in blank Fat32 formatted USB.
[B]I have 2 TVs with same problem. [/B]
[I]Tried the software from [url]https://www.kazmielecom.com/cv338h-t50-software/[/url][/I]
TV1
[I]MODEL: Graetz GR50E5300SA
PANEL: CX500DLEDM [/I]LE-5018S
TV2
[I]MODEL: SMART TECH LE-5017SA
PANEL: CX500DLEDM LE-5017S[/I]
TRIED SOFTWARE:
[I]File 1:
-CV338H-T50_1920x1080_LE-5018N_USB[/I]
File 2:
s_05-01-23-11_BBK_50LEX-7027FT2C
Описание.txt contains:...Leave a comment:
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I have followed this procedure as have done it in the past.
firmware update started but at 25% displayed firmware error and rebooted with no display. Now Standby button red on. Backlights On.
tried several more times with another software and same happened....Leave a comment:
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Yes I agree, Can I use the VGA port to view what I am doing on the board? Never used this method....Leave a comment:
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I have the ezp2010 programmer so not sure if I am able to do this at the moment Is the software in an SPI chip ? never used the RT809...
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Graetz / Akai CV338H-T50 bricked after firmware upgrade
Hi,
The original fault was set not loading completely and reboots. I have downloaded a firmware on usb, tried the upload but midway says incorrect spftware and shuts down. I have blank raster now.
Anyone has experience on this mainboard?
In the download there are other apart from CtvUpgrade.bin
[ATTACH=JSON]{"data-align":"none","data-size":"medium","data-attachmentid":3235739}[/ATTACH]
[ATTACH=JSON]{"data-align":"none","data-size":"full","title":"image.png","data-attachmentid":3235738}[/ATTACH]... -
Am not aware where can I find pregrommed Chip. Will look up some more sites. As far as I know, sites like Aliexpress sell it new blank.
I have set the 'Hospitality' option to ON in service mode with the ue40k5607 main board in place. However am not sure if the apps installed on the original board can work n this replaceable board....Leave a comment:
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I am like 80% sure. I might be able to replace it however not sure am able to reprogram the MMC because 99% it will be sold as new and blank internal ROM.Leave a comment:
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Samsung HG49EE690 Hospitality TV reboot issue Mainboard BN94-11086A
Hi,
I have 3 of these TVs for repair with same problem of going to standby after around 10minutes and start again continuously. I have tried a new SPI 25Q40 but fault remains. Am suspecting a CPU problem as it gets a bit hotter than I expect.
This seems to be a common problem in these models. I am 100% sure it is a mainboard issue as I have fitted a spare from a normal TV from a UE40K5607 and stays on (diplay inverted but I managed to rotate in SM using a different display).
Any help appreciated!... -
I have flashed the 25Q40 and TV set fixed.
Have found all the firmware information in this sister site [url]https://shorturl.at/hKS13[/url]https://I have flashed the 25Q40 and...at/hKS13[/url]Leave a comment:
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UE50H6200 Freezes on boot up- Firmware required.
Hi,
I am after an SPI dump for this set. Fault is after the LOGO appears, the remote command stop responding and a blank screen is shown. Backlights and screen are 100% good as have tried another board of a another model but similar screen type.
Exact model code is UE50H6200AYXZT
[B]BN94-07385A (BN94-07385E good as well)
Anyone has some information please?[/B]
[URL=filedata/fetch?filedataid=330014][ATTACH=JSON]{"data-align":"none","data-size":"medium","data-attachmentid":3230363}[/ATTACH][/URL]... -
QE55Q0TAT BN94-15361X copy account data to hew main board
Hi
Got a new board to repair dead set.
customer had some paid accounts that wants to reuse from old board as he has no more access to the original email account for some iptv and other services like Disney etc. Are these stored in spi flash?
I guess they are in a Samsung account storage area.
Tks -
Thomson 65UC6406 service mode required (Android TV)
Hi,
Just replaced the backlights of this set and want to enter SM to reduce permanantly a bit the backilght settings.
Cannot find the correct settings. This set has only 3 buttons on the bottom of TV as found many say press vol- and ch- together.
Thanks -
Vestel 17IPS12 using IC U101 BM1Q001 BM1Q001FJ pdf
Hi
Am after a schematif for 17IPS12 that uses the BM1Q001FJ-E2. I have pdf for the V3 version that uses FAN6300 but circuit is not the same.
Any help appreciated!...
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