LG 49SM5KB
Reflow = No change.
New T-con .
Could it be Firmware corruption issue ( Logo appears etc ofc )...
Ancient1
Badcaps Veteran
Last Activity: 03-11-2025, 12:38 AM
Joined: 12-30-2019
Location: Haifa
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test...Leave a comment:
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Thx ! it does make sense because these are image ( production lines ) lines and not no_image ( usually dark / black ) lines.
Does reflowing work ? or is it a faulty IC ?
I'll try to reflow and report here...Leave a comment:
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Thx EazyBone
Turns out the guy has 3 ( 3 ) of that Model with SAME issue. I asked him to note the production date , might be (emerging) known issue.
For now , I sent him to look for fluctuating VGH VGL LCx..Leave a comment:
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Strange LG TV issue : Image vertical lines in black screen
Hi
Asking for a friend.
I'm used to black vertical line in otherwise good image - probable solution is a rubber to push and tighten the COFs bonding.
but here its the opposite !
TV has new T-con = same issue
A missing panel voltage would have global effect
So , what should one do ? how can I find where the fault is ?
Thanks !... -
[B]Thanks ! [/B]
Unfortunately I deemed the PSU : Not fit for use.
I replaced the marked cap with a similar size cap , for testing .
The PSU worked fine with no load.
Customer installed and after half an hour of work , with software update , it blew 3rd time ! ( He put new C102 and it blew again so he brought to me )
Checking the PSU I found the same short , on the Bridge's DC pins , removed and short remained , BUT C102 was fine !
Since the PSU is cheap , [U]it makes no sense to risk the Console with a repeated fail . [/U][B]Thanks ! [/B]...Leave a comment:
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Need help changing (single board TV) LED Driver's Current ( FB Resistor )
Elco (?) 50" Smart TV. Backlight ( BL) issue.
Single Board : TP.SK708D.PC821
I bought new BL set . - OK
Power up : Blip . Protection.
Led Tester shows current at 34.2 mA , Previously it was 42.1 mA
Solution : Change current output .
The BL IC is marked on the photo and datasheet is [URL="https://www.alldatasheet.com/datasheet-pdf/pdf/1206930/SCHNEIDER/QOB33535.html"]QOB33535 Datasheet(PDF) - Schneider Electric (alldatasheet.com)[/URL]
Calculating according to the datasheet - see attached photo :
With ILed = 34.2mA , equation #1... -
Cap Value : Xbox One S PSU Model : N120A001L Rev:0.3
​Hi
I need the value of C102 .
[B]Briefly[/B] : Blown Fuse . In-Series lamp lights fully = short on Hot Side - Bridge DC [U]Holes[/U] are shorted !. Bridge OK out-of-circuit. Chopper Mosfet and Diode - OK. D102 ( T4 Diode ) measures In-Circuit 0.041V both ways but Normal outside. Other caps / diodes..ok. Short remains Haarg .
BUT ! , when C102 Cap ( between Main Cap legs , it doesn't show as I took it out for easier access ) was taken out - short is gone .
Thanks a bunch​Hi
I need the value of C102 .
[B]Briefly[/B] -
MacBook Pro 2012 A1398 : Battery BMS circuit repair OR can it boot WITHOUT a battery ?
Hi
I received such Laptop as junk. Opening it I saw a lot of whitish water residue , but no corrosion really ( few coils have small brown rust marks, no green copper ).
I cleaned all thoroughly and interestingly , its the Battery BMS board that has the real corrosion spots.. under the protective clear Goo !!
[U]I want to try and power up the laptop [/U]
Battery is swollen. But I don't want to buy a new battery right now , of course .
I started work on the BMS by zooming in on green spots . 2 VIAs are filled with rusted copper goo - who... -
Thanks !Leave a comment:
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LG Flatron L1953TR : CCFL connectors confusion ( forgot to take a photo before disassembling )
I forgot to take a photo and now I am not sure how to reconnect
As you can see , I have 2 pairs , each pair has 2 colored wires : the black_ish connector and blue_ish connector
There must be a convention to help decide , I assume
How do I reassemble ?
Thanks -
Identifying correctly HP IPM87-MP motherboard. Bios request
Hi
I got the board ONLY. I want to find the latest BIOS update. But seems for HP the board Model/Ver isn't enough ?
How should I go about finding the latest BIOS ?
I upload here the printed Model and sticker
Thanks...Last edited by SMDFlea; 01-21-2024, 06:16 AM. -
I repaired a dead JBL Flip 6
No sign of life : [B]Disconnecting the battery reset the Firmware and solved it[/B]
Judging by the Charger getting hot : It charged fine . Replugging it drew ~220mA for 15 seconds than 0.00 = Bat. IC negotiations.
Key combinations didn't solve the problem
Opened to inspect the board but it looked mint ( <2Yr old device ) , opening involves disconnection the Battery. Battery measured 4.2V .
Decided an hour later to reconnect the Battery and check On/Off - maybe the Firmware was reset as it does in laptops ( needs V to keep the settings )
Works f...Last edited by Ancient1; 12-25-2023, 03:14 AM. -
[B]Sold
For ~25 EU[/B]
....
Buyer : Worked few hours and image started shaking ...
I explained everything to him, and he can return it .
but maybe ..
how can I easily link to a video ?[B]Sold
For ~25 EU[/B]
....
Buyer : Worked few hours and image started shaking ...
I explained everything to him, and he can return it .
but maybe ..
how can I easily link to a video ?Leave a comment:
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No. Just the green hue . see first post
I'll try and sell...Leave a comment:
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Leave a comment:
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The TV was brought to me from someone I guided. I told him to mask tracks and things got better - to the green hue state in the photo in my first message.
I did mention a short as a probable cause .
Anyway , The hole is a fact now. I'll leave the TV , in an angel, till tomorrow and decide . Probably throw away but sell the electronicsLeave a comment:
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Where else could I drill.
There was/is no fluid.
The pixels area was not drilled .Last edited by Ancient1; 12-11-2023, 08:17 AM.Leave a comment:
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Hi Davi.p
Amazing !!! And a little disapointing
I drilled through without any issue with my dentist drill heads
On 1st power up the screen was GOOD - Amazing
Than after few minutes the dot lines appeared
I tilted the TV - perhaps fluid should leak down and the situation will improve ?
There is also a horizontal line on the upper side .. no idea if it was there before..
Overall , I consider this another miracle repair by you
Thank you !!! 🎅 Merry Christmass...Leave a comment:
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Thanks for the advice Davi.P .
I have diamond disc , Dentist drills , and Glass tools . Not the first time I do VERY delicate job with tiny parts ( solder wires to 0402 cap because the pads are gone ). We'll see...Leave a comment:
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