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philco printed RC vertical network
Hi: Trying to restore vertical drive in a 1956 philco top line 21" console; away from set now and can't recall chassis #. But all fingers point to a ceramic encased module I am planning on fabricating on perfboard with discrete parts. Anybody have experience with these being the culprit in shutting down everything downstream of sync separator? Starting from totally dead, I replaced nearly every cap in it and was getting a wobbly, hum-laden picture. Then something collapsed under load and we are back at square two. Sound is present. Horizontal oscillator squeal is heard but no HV. 580 boost from flyback sub winding is running 30V. Does the VOT make that 580V or does it come from the HOT and go into the VOT? Having trouble making sense of the schematic. THank you. --Tom in AZ
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