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A good place to start is by measuring base voltages on the H output tube. If the osc. is dead or malfunctioning(manifested in grid voltage), the screen bias network is damaged, or the cathode ground wire is open, then the output tube will not drive the fly properly. I'd change the HV rect and try to get the H out tube workin right. HV has a funny way of re-welding closed or bypassing small opens, and you might get lucky.
I'd be more concerned if it failed a ring test (granted you need the HV winding to ring it IIRC), or windings other than the HV were open.
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10-07-2016, 06:37 AM
Hybrid Mode
