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RE: line timebase board

there are several mods you can do to make your 772 more reliable , 
1. bolster the ground plane of the pcb , especially to the transformer and the 
    heat shield with the transistors on.
2. change the BYW119 or later version to a BY329-1500
3. make sure the heat shield is not connected to the collectors of any of the 
transisors. sometimes the mica washers crack or the top hats are broken.
4.if in doubt change all the power trannies or measure them thoroughly , one 
can go leaky but still measure ok.......bang........again.
7.  etc
good luck


thanks to Sam Dlugach, Dean Humphus, & Clark Bierbaum 
for support of the TIG in 1997
mailinglist digest available......posting guidelines on the webpage