Old Acer P7280 Projector - No fans no light

[Divinesense]

Just for fun I'm trying to figure out what's wrong with my old Acer P7280 projector.

It shows no errors, lamp or so. Every looks okay. The red led when plugged in and blue led when I turn it on. However, there is no fan spin and no light. After a while the color wheel starts to spin a couple of times, and then stays on. Nothing else happens.

I have measured all voltages coming out from the PSU, they seem correct, the ballast is getting it's 380V (If I remember correctly) voltage. 12.5v and 5v standby is present and stable on the main board , other voltages probe ok as far as I have found test points.

I Have looked at the main board with a thermal camera and spotted some warm ICs but nothing that immediately screams short. And nothing over 70C.

I have the service manual but no schematics.

Any suggestions what might cause it not to boot correctly?(that seems to be what happens)

Oh I tried looking for serial pads to see if I could get some diagnostic output during boot but I have not found any. It has an rs232 port in the back but I don't think that will give me any startup info.

Sorry about the picture I'll add a better one tomorrow.

[Divinesense]

If it helps I can also add that if I start it up without the lamp it behaves exactly the same. It seems it's not even getting to the lamp check.

It shows up as ddp3020 if I connect it to my PC with USB. I have not found any drivers for that. Guessing it's a virtual com port.

I can also make it boot into firmware update mode by holding power and menu at startup.