MX0841B regulator, & 2SC5148 horizontal output shorted, R607 0.1 ohm fusible open, soldered horiz drive, replaced C502 in horiz drive, checked D648 avalanche diode, & found no other parts bad. Soldered vertical IC, used variac, slowly up to line voltage, unit ran fine, great picture, then, after 30 secs or so, just quitely died, same parts gone again. I didn't have a VDR 602 P # 1-801-074-41, (V10271U), & it measured open circuit, so I let it ride. I had 1-807-288-11, but they are different. Never got to check to horiz drive waveform. Did I miss something? Even when you repair these great units, as per all the info around, some units just blow up, no matter how much time you spend on them. Anyone have some insight. Thanks. Dani.