DeDietrich single oven DOP895

This machine has a touch panel to operate the functions, first time I’ve seen this tbh – Fault is that the fan motor and round oven element do not work.
The motor is pretty stiff to turn but it does manually turn alright and the heater meters out fine, neither operate though while oven is on.

I followed the wires upto a pcb which sits on top of the cavity and wanted to check if there was power coming out of it to feed the element and motor. BUT when I turned the machine back on again after my testing it didn’t come back to life….
Some relays started clicking and the display lights were just flickering all the time and in no sequence or order. The display instructions do not light up, it just clicks randomly and flashes blue leds from the facia pcb.

Before I did my checks the rest of the oven was working fine but now nothing works. All I removed was a few wires to check some of the componants, now I have made it worse.

Any ideas on either of these faults, please?

Thanks
Brett