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Old 03-18-2019, 09:57 AM
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DavGoodlin DavGoodlin is offline
Motorola Minion
 
Join Date: Aug 2011
Location: near Strasburg PA
Posts: 3,504
If you have full horz deflection, good- you are on the right track. Boost supply has extremely low current capability, so even a leaky capacitor of any kind can do this.

Another possible cause is an open (was it .068?) capacitor on the boost line. Scope it if you can to confirm.

If you have a schematic, sams 959 IIRC, look for the boost tie points and disconnect each one, including vertical to see if voltage rises much. It is possible you have another bad boost rectifier.
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