Thanks Pat, I used a lot of the techniques for cleaning I learnt from robrenz and others,
General clean; magic sponge with IPA, top and bottom covers then a bit of Armourall
Tough Stickers; orange cleaner
Paint; light polish with car polish, avoid lettering. used a cotton bud.(Q tip)
Knobs; IPA then Mothers Back to Black
BNCs, switches; Simchrome , mostly hand polished then IPA wash esp on inside of BNC
Bit of fun, also a bit crazy, as I was testing it out, I switched on 'modern' gear, within 5mins had Thunderbolt GPSDO lock so ppb accuracy for the sig gen!!!!! but not nearly so 'cool' or fun. If the 5245L breaks in the future I will likely be able to repair it unlike my modern gear.
I find I learn electronics to a much deeper level by fixing some of this old stuff, have tended to stick with HP mainly because of their initial design, construction and manuals being so good.
Must confess I have just bought 5233L !! Have a 3456 awaiting a bit of TLC.
Hope your projects are going well.
Rob