Quote:
Originally Posted by old_coot88
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).
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Spot on.
Quote:
Originally Posted by old_coot88
If good, check HV winding continuity from c.t. to plates of the rectifier (pins 4 and 6).
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Check. About 25 ohms on both sides.
Quote:
Originally Posted by old_coot88
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).
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C1 and C2 both have B+, but only 90v. C3 drops 20v after the choke.
Quote:
Originally Posted by old_coot88
The top of that chain should be around -85V, as it is the negative supply source.
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This point is low also. It reads only -43v.
