Both datasheets were hyperlinked in my previous post.Please post what data sheets you have there so we don't have to go searching.
Show what meter range you measured the semiconductors on.
I used the diode setting on the Fluke 177 which is auto-ranging.
Bridge is ok. Transistor seems ok too (the schematic link you give shows different designations than on your actual board i.e. schematic shows Q105/Q106 but the board is marked Q409 and .... dunno, can't see!)
Yeah, I was never able to find Q105/106 printed on the board either. Doesn't help things any.
Post #14 showed another sick-looking component. Any thoughts on the appearance?