I am struggling with these chassis. any help would be great. One is the ms8-25b, this chassis doesnt have r-433 or c-433 it is completely different. I started with it shutting down on power up. After some caps & turning the B+ way down, it now stays on but has vertical collapse even after vertical caps & IC401 was changed [LA7833] I would also like to know what the B+ should be set at? Any ideas? I also have 2-27" chassis nanao it doesnt have a model # .the chassis C/B is stamped #05A00585D1 shutting down on power up even after changing caps in the B+ area. I checked Q-901,D502'&Q533, they seem good? Did I miss a cap or something? Also would like to know the B+ of this one? Would love to find some schematics too, I know I am asking a lot but any help would be wonderful. thanks sherry-vintage arcade
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