Hi Roy,
Well you might be lucky and I assume you've looked to see whether the PCB is still available from Keysight? Probably not, as the 3245A is so old, but maybe.
Otherwise, you might need to fix yourself. Replace the caps (I'm only seeing 4 electrolytics on that board), fix any obvious damage and replace these chips only if necessary?
I'm thinking only 1826-2377/8 might need a bit of thought - the others should be OK?
It's also worth checking out xDevs:
There's a specific section there that talks about the A3 (high-voltage) board and the PB58 high-voltage power amp on it.
Alan
