Maybe help me troubleshoot a faulty 3d printer board

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I know this is slightly off topic for this forum but I figured some of yall have experience with electrical engineering and could point me in the right direction.

Story: So I bought the cheapest name brand SLA printer I have access to, an Anycubic Photon Mono 2, and it arrived with a dead touch screen. I have contacted support and after some diagnostics they are sending me a new motherboard. In the meantime while I wait for that to ship from China, I want to tinker with the faulty board.

Issue: The 2.8" touchscreen turns on but no options are select-able. Replaced the screen and cable, still faulty, so narrows it down to something on the board. No obvious damage or anomaly visible on the board. The touch controller is a XPT2046 IC which is my first suspect. Tried to read the data sheet but its a little over my head.

Question: How do I troubleshoot the XPT2046? What equipment do I need?

Thanks

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If I had a schematic I could assist you with figuring this out, but you’d need some specific tools.

Bench power supply, multi-meter, Spectrum analyzer(really a network analyzer would be even better), and a soldering iron. With standard tools, materials, etc.

If they are letting you keep the board you could maybe take it to local PC repair shop that does board level repairs.

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