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Another photo
Of the underside.
Thanks for the replies so far, although a lot of what Reece said baffles me!
The valves seem pretty rare, my local net searches have not been helpful.
I will do the usual - replace caps and test resistors. If OK, then clean switches, etc then a start with a lightglobe as ballast.
Any hints with circuit diagrams? The cap ratings are difficult to detect.
Cheers, Alan
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