5 MHz would likely do = Tek 305 same size as: a Tek 335, which is 35 MHz. Both weigh just over 10#, so UPS might be tolerable - where are ya? You'd just have to treat it nice - I've culled a few super clean 335s for long term. (No one will ever make stuff this good in any present, future Corp. Money + TLAs main 'product' now)
But 'time' I can't send. Can't hurt to just check PS volts at obvious points with DVM, or given your bizarre symptoms - Bill's easter egg might be it - if got good Karma. Now with a father experienced in this stuff - the physics and NTSC haven't er changed ;-)
Do sympathize re no schematic, though - still, PS checks might reveal all - with nose to find fried item?
Hey.. we gotta stop fillin up them landfills!
ashtonb[sort-of at]jps
and that horrible idea: .net