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 fewer 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 date code: 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? No… It has severe ghosting (weirdly gets better with higher overdrive/response time 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 relatively well-built.
This Panel and variations of it are used in these models:
- HP X24c
- Viewplus MH-24CH
- N-Vision XC24S (and V2) (similar data lines are cut, see here)
I reckon these will flood the used market.
They are a great pickup if cheap enough.
Edit: It is the 21st November 2025, and the monitor has the same problem again. White pixels create a white vertical line across the whole display, and every other row of pixels is absent. A quick look at high refresh rate monitors on a price comparison site yield: they have gotten cheaper? I’m buying a new one.
Edit the second: I got a Philips Envia 24M2N3200NF 23.8" Monitor for 66€ shipped. (What crazy economics make this possible?) Full HD 1080p Monitor, IPS with FreeSync (48 to 144 Hz). I’ve now had it in use for half a year, and it’s perfectly usable. Sadly, It does not report power on hours like my LG 27GL850, which sits at 29158 hours. Colors are good, but not great, and it has no ghosting like the bad HP X24c Monitor!