Hi guys, I'm working on a tv right now and it's baffling me, the power was blown ( vestel 17pw25-4) so I bought and fitted a new one, now it powers up, the back light comes on for a second then it shuts down again ! I swapped out the inverter for a different one and the same fault is happening, there is only the main board ( 17mb65-2) and the t-con remaining, it has an lg led lc420dun panel in it , could this be faulty ?
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Re: Isis-42-913-led3d
Yes - there are more and more threads regarding faulty/damaged/blown bulb
LED strings - seems sometimes 1 bad led and protection shuts it all down.Please upload pictures using attachment function when ask for help on the repair
http://www.badcaps.net/forum/showthread.php?t=39740 -
Re: Isis-42-913-led3d
budm has put some articles in here which might help you
https://www.badcaps.net/forum/showthread.php?t=25810Please upload pictures using attachment function when ask for help on the repair
http://www.badcaps.net/forum/showthread.php?t=39740Comment
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Re: Isis-42-913-led3d
Isn't there a way to override it or acknowledge it and carry on ?Comment
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Re: Isis-42-913-led3d
Just for future info and people searching for things that bring them to this thread, I've seen a video where someone replaced a dead LED with a determined value diode to add the load the LED would have previously provided and the rest of the string worked.
You have to get a similar physically sized diode so the string fits in the normal position for this to work, and there was no visible difference from a distance.Comment
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Re: Isis-42-913-led3d
Or perhaps you can apply the 'Reecyburger' stacking method to replace the bad LED...Comment
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Re: Isis-42-913-led3d
Similar sized diode what ? Size of pad or wattage lol ? Just stack em works good never had a return yetPlease Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !
https://www.facebook.com/Telford-Tel...7894576335359/Comment
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The model is 15ec-1061nm
Board number is DAG3EDMB8D0
SO i turn the laptop on , and as soon as it starts booting from disk, from usb, windows,linux,HBCD,anything i boot it just turns off....while in bios menu or in linux boot menu it stays on normally...It's like when it starts to use graphics it shuts down...But i measured 0.72V while working on the GPU power line,no excess heat is comming from GPU or CPU, i even removed the heatsink and turned the laptop on and everything worked fine, got a bit hot, fan span to full speed, but it worked like that for few minutes in bios...10-29-2024, 12:05 AM -
Hello everyone,
I have a Lenovo V15-IKB that had a damaged motherboard. I replaced it with a motherboard from a Lenovo V15-IIL.
The board powers on, but it shuts down after about 10-15 seconds. This only happens when the internal display (LCD panel) is connected.
Here's what I've tried so far:- When the internal display is disconnected, the laptop works perfectly fine via HDMI.
- The laptop shows an image on the internal display for a few seconds before it shuts down.
- I tried swapping the LCD panel with a known good one.
- I tried swapping the LCD cable
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Hello everyone,
I need help with my Lenovo Legion laptop. It turns on for a few seconds and then immediately shuts down. I believe this is a BIOS corruption issue.
Laptop Model:- Model: Lenovo Legion Slim 5 16APH8
- GPU: NVIDIA GeForce RTX 4070
- Main BIOS chip size: 32MB
- VBIOS chip size: 16MB
What I Have Tried So Far:- I
11-04-2025, 05:14 AM -
I have a Huawei Matebook D15, MB DAH98PMBAB0 REV. B with faulty onboard RAM. Laptop starts but when loading Windows instantly gets BSOD's. Passmark Memtest shows multpile faults on test 11. Memory is itentified as 2 modules Samsung M471A5244CB0-CWE, which are available as standard so-dimm. Is it possible to desolder memory from such module and solder it on the MB? How to identyfiy which one on the MB is faulty? -
Hello esteemed members. I appreciate that my question will strike some as being somewhat childishly simple, but it genuine perplexes me! I have repaired several laptops before by removing a faulty capacitor that was short-circuiting the motherboard, whereupon the laptop would then work. For me, it begs the question that, if the current can bypass where the capcitor was when it has been removed, why didn't it just bypass it when it was present and faulty,? I can't get my head round the premise that if the other side of the capacitor is connected to ground, then why doesn't the current simply bypass...
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