In September 2021, I bought a cheap HP x24C. A curved 24" 144Hz 1080p Monitor, which supports Freesync. I mainly went for this one because my main display is 144Hz as well, and having the same refresh rate on all displays causes less problems.

4 Months after the 2-year warranty expired, It started displaying vertical lines, after slowly fading out the actual video signal. Let’s Fix it!

After disassembly, I tried re-seating all the connections (Panel LVDS/eDP, Panel Power, Backlight etc), without any luck!

The Monitor uses the BEOB236WU1 Panel.
The panel PCB says K11K38M7XRZZ-ZS0200 2122 M236HVR01.0.
2122 looks like a datecode: 22nd Week 2021.

Disconnecting the right (from behind) control panel completely fixes the vertical lines, but half the monitor is not displaying any image, of course. That means the problem is located on the sub control PCB.

In a random youtube search “hp x24c vertical lines”, I stumbled upon this video.

They very gently removed 9 resistors on the sub control PCB in question (enclosed in purple). It looks like these resistors are strapping some CKA1/2/3/4/5/6 and LCA1/2 signals (clocks perhaps?). That would explain the vertical lines, if the clock signal is not recognized?

Removing those resistors fixed the Vertical Lines! Successfully saved a cheap 150€ gaming monitor.

Do I recommend it? kind of.
It has severe ghosting (weirdly gets better with higher overdrive/responsetime settings) and doesn’t like going from black to gray or vice-versa. Colors are OK, but nothing to master against. But it is super cheap, and relativly well built.

This Panel and variations of it are used in these models:

• HP X24c
• Viewplus MH-24CH
• N-Vision XC24S (and V2) (similar datalines are cut, see here)

I reckon these will flood the used market.
They are a great pickup if cheap enough.