Got an old V90 wouldn't power on. opened it and there were two burned out resistors that I repaired. Now, the unit powers up but it snap-crackle-pops all over and the resistors heat up pretty quickly. 2x ~520 ohm 5w R 72 and R74 (brown on left and right of fuse). may be a heating issue with two diodes I'm at D-16 and D-17 (1N4 742 by the ceramic cap mid and bottom of pic). Any advice for repair?