Many thanks for replying Ken.
1. I think the power supply diodes are D19, 20 21 and 22 on this board. They all look fine physically. I can not check them without unsoldering them. But 151.1 VDC seams like a reasonable 119.5VAC once rectified. Plus the fuse did not blow when I isolated R103 which is feeding the rest of the board. Correct me if I'm wrong but these diodes are ok.
2. Done that. I left the degaussing coil unplugged. No help.
3. C36 I will check this first.
4. D18 I will check this second.
5. Shorted yoke? hmm... I disconnected P6 and P5. No help, although the hardwired T1 Trans Flyback leads were still connected. I will try unsoldering these.
6. Shorted horizontal output transistor. I will need some help locating and diagnosing it. Please understand my background is robotics. Aside from repairing my 37" Mits TV last year, thanks to helpful people and forums similar to this one, I know jack all about monitors.
Is it (what the service manual describes as) the T1 Trans Flyback? I did notice a crack in the housing (I'll post a close up picture next). Again how do I diagnose it?
7. Bad Flyback? er...same as # 6.
Again Ken I appreciate any help I can get. I bought this (perfectly working prior to transport) arcade game for the guys at work out of the goodness of my... bonnus, to boost workplace moral. Unfortunately it backfired when the monitor fell off
