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Hokay. So.. with the set off, check resistance from c.t. of the HV winding to ground. It should be no higher than the sum of those three resistors (R94, R95A/B, R96).
If good, check HV winding continuity from c.t. to plates of the rectifier (pins 4 and 6).
If good, turn the set on and measure voltage across C1A and C2A. It should be the full B+ voltage (minus the drop across the R94/R95A-B/R96 chain).
The top of that chain should be around -85V, as it is the negative supply source.
B+ should also appear on C3A, on the downstream side of the choke.
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