Hi John, I don't think this set will give a picture anywhere near as good as your set, the picture is certainly nowhere as bright.
I only have around 5kV of EHT.
One thing I have noticed is the profound effect of fitting the valve screening cans on the RF chassis, some were missing on this set, but I borrowed some from my HMV.
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Replace waxies in frame output stage with particular reference to C43 .1uf C41 .02uf C44 .0082 [weird value, use nearest] C45 .015uf C46 .1uf and finally the cathode bias capacitor, C56 160uf. It may be O/C but I suspect it's the miss matched transformer.
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All caps have been changed, bar the main electrolytic, the 2 1uf electrolytics and the 50uf on top of the chassis.
C44 on my set is a 6200pF, I have not replaced this yet.
I will try reducing the value of the bias resistor to 100 ohms, I need to replace the linearity slider with a rotary pot, as this is intermittent.
Actually, both H & V holds are stable.
I will carry on with this set after tea, and see if I can get some further improvements.
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Looks like I'm in for lots of fun with my Marconi doesn't it
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You sure are Marc, this set has certainly thrown up a lot of problems
But I never thought it would be easy!
I have an HMV 2811 (same chassis, bigger tube) that I tried to restore last year, I am thinking of getting it back on the bench for another bash at it.
I must be mad, but it makes sense to tackle it after this one.
I will then get back to restoring a more worthy set
The photos below show the recapped chassis so far.
Mark