[PETERg0rsq]

Gezza

Doing the maths! when operating normally (300V at C and 200V at D) there would be 15mA flowing through the 7k resistor.

With your readings (C= 46V and D=25V) there is only 3mA flowing through the 7K resistor, so I would rule out any problem downstream of the 7K resistor!

That just leaves the rectifier (exchanged), transformer, and 20u capacitor.

(assuming the 7K resistor is good!)

I suspect the capacitor would be the most likely to fail, and easiest to check, either by substitution, or by measurement. How did you measure the capacitor? You would need to test it at 300 to 400V (certainly over 46V) to ensure no high voltage breakdown effects!

Regards

peter