Hello everyone,

I am troubleshooting a Schenker XMG NEO 17 (M22), which is based on a Tongfang chassis (likely GMxRGxx series, 2022 model). Specs: AMD Ryzen 9 6900HX / NVIDIA RTX 3080 Ti (16GB).

The Incident: The original LCD panel developed an internal short circuit (measured shorts across almost all rails on the panel side). This caused a catastrophic failure in the backlight circuit on the motherboard:

• The backlight fuse was blown.
• The P-Channel MOSFET which switches the 19.5V backlight rail was destroyed. Measured nearly 0 Ohm between Source and Gate and 240 Ohm

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This specification for the MSI Stealth 17 STUDIO A13V-022 Notebook can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the 17 STUDIO A13V-022 boardview and 17 STUDIO A13V-022 schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet,...

I bought this p2210f dell monitor to fix. Schematic is the same as p2210.
Behaviour is that monitors comes on but then backlight switches off almost instantly. If I look with flashlight I can still find the "No signal message". So definitely a backlight issue. Trying to advance the issue I proved that the protection circuit is switching off the backlight by shorting out C3 and resistor to disable the INL chip then re enable by removing the short.
This is where it gets interesting. When I disassembled the monitor to solder leads on c3 capacitor I noticed the backlight flickered...

Hi all,

I have a Samsung UE75TU7090 with PSU board BN44-01056A (L75S6N_THS) with a backlight fault. With both backlight connectors unplugged the TV boots normally with a stable 12V rail. With the backlight connected the TV fails to start, Channel 1 (rated 115V) folds back to around 20V, Channel 2 (rated 70V) drops to 0V, and the 12V rail collapses to 3.1V. With the backlight disconnected and powered on, Channel 2 ramps up to around 230V open circuit while Channel 1 sits at 0V.
Since the TV boots fine with the backlight unplugged I'm leaning towards a shorted LED strip causing...

Hello, got an iPad Pro A2378 12.9 5th gen with no backlight. Got another test unit without screen, tested the screen, still no backlight with the test unit.
Figured out the backlight on the screen was bad, ordred a new backlight from mobilesentrix, *carefully replaced it* without damaging the lcd, oh well.
Final result, issue is still there, the screen has no back lights. So i'm back to square one, with 3 hours less and 100$ out, issue still on the screen.
The panel is still ok, i can see the apple in the middle of the screen when it kicks in, just no backlight.
Anyone...