Sanyo PLC-XE40 Multiverse Projector does not turn on
I have been fiddling around with this for a while on my school already, first things I did with the teacher before it failed somehow: We went to clean it up and check why it had such a dim light production (appeared to be a bad lamp afterwards), we took it apart, not much force applied, used a air compressor to get all dirt and debris blown out, when it was all together and back on it's overhead support, it started up fine, but the teacher just couldn't shut it down. They tried all basic things, check power, remote control and anything else. The status indicators are just showing up normal, power indicator is just red, indicating it should be all good to turn on, and the lamp replace warning is still on too.
I disassembled it last Friday, I re-attached the infrared sensor, even tried a other remote control (they have multiple projectors there, as well as broken ones). I have readed on this very forum something about a thermal reset switch? If so, where is that even located?
I greatly appreciate any help!