Well... there were some screws hidden under the plastic of the power switch and now i got it spread over the floor, and i immeadiatly noticed there was an unsoldered pin on the flyback driver, but it has no path on the board, so i guess thats ok?

 

Post #36 had good suggestions for you. However, I was able to locate faulty Capacitors Spraying Freeze Spray, I would also heat them to see if it had any affect. Looking for bad or faulty solder joints would be a good idea, get a good pair of Micro Head set or a good Magnifier.

kv