I have a "G" 1-659-752-21 board Q601 and Q602 blown, and replaced, with D648
(150 v protect zener)

Board works, but has almost NO regulation for +130v out...100VAC in outputs
+145V B+
Oddly, the LOAD regulation is good, pix size does not change with
brightness...

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1/6/2004
Update: problem found. it was a transformer, T603, called "PRT"
The good one reads 500uh on the primary, the bad one only 150!
It drives the output transistors through it's secodary...

Thanks for the help guys!

Aaron H.