On 4/15/2016 3:38 PM, John Miles wrote:
Have a look at the capacitors in the voltage divider that drives the
bases of the switching transistors. There's a good chance that's your
problem, and they probably need to be replaced even if not. 75-TVA1607
(Mouser p/n for Sprague TVA1607) works well.
John for what it's worth both my 8662 and 8663 which are late (1994)
revisions have these single 15 µF caps replaced by two parallel 10 µFs
among other changes in the power supply area. Maybe worth doing if
they can be fitted...
Dan
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