Hi, I have this Lenovo V510z AIO with the mobo CSA20 LA-D953P with no backlight at all, I've tried checking on different websites for schematics or anything leading to the location of the backlight circuit with no luck, there's nothing that seems to be burned out nor shorted is there any way to troubleshoot this issue? thank you in advance
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Hello!
I have a couple of T440p that need backlight fuse, image is present but no light. Can someone please point them so i can replace them?
Thank you!
Schematics: https://www.badcaps.net/forum/troubl...42#post147114208-26-2024, 02:36 PM -
For Badcaps Readers, Please note that I am hopefully going to present this same message to Lenovo to see if they have any insight to the matter as well and figured to share the entirety here for clarification. The System is out of warranty as it is but does have the option to have it extended.
Model Information: T14 Gen 2 (Type 20XK, 20XL) Laptop (ThinkPad) - Type 20XK - Model 20XK0069US
Board: T14 Gen 2 (Type 20XK, 20XL) - Type 20XK.
System Hardware:
Processor: AMD Ryzen 7 PRO 5850U
Memory: 1x 16GB DDR4 3200 (Soldered on Board); 1x Crucial 32GB DDR4...09-08-2025, 10:46 PM -
Good morning guys,
I have a Lenovo V15 G3 that came in with liquid damage. The damage was very minor and some corrosion on the IO board where the power switch was. After cleaning both the motherboard and IO board in alcohol, the laptop turned on and I had backlight for about 3 seconds but nothing further. I don't have a boardview for this laptop (Have requested this in the Schematic Request section), however from previous experience on Lenovo laptops I have checked pins 1, 2, 3 on the EDP connector. When the battery is connected only, I get 8V and when AC adapter is connected, I get... -
Hello!
The image is visible, but there is no backlight! On older Lenovo laptops, this problem could have been solved by replacing a fuse, but now I can't find the solution!
ThinkBook 13s-IML (20RR)
P207JXJ6... -
this tv is throwing me for a loop. do samsung tvs no longer have the backlight self test feature built into the power supply?
i tested the backlight with my LED tester and it lights up both strips. one of them reads 100v and the other reads 63.7v.
unplugged mainboard from power supply but left backlight plugged in, and then plugged psu wall power in. expected to see backlights light up but see nothing.
according to how ive diagnosed in the past, this would almost always be a bad power supply. replacement power supply was cheap like 20$ from ebay. but still i get not even...