@charlie54 You’re in luck! I just managed to fix it a few days ago. Apologies if you’re a bit more experienced at repairs and this is a bit dumbed down for you - but this was my process: I basically used voltage injection to find the shorted component (there are just too many capacitors to test and my multi-meter was not good enough). I removed all the connections to the motherboard apart from the main power connector (which you have the arrow pointed to in your image) and placed some kind of protective vinyl sort of mouse mat underneath the board to prevent it shorting against any of the metal components beneath. I then took the grounding wire that is attached to the motherboard near the speaker and screwed one end into the chassis and the other onto one corner of the motherboard so the board remained grounded. I then plugged the projector into the wall outlet and gently ran my hand over the powered on board (keeping well away from the power supply), to see which of the components on the board was heating...
