1084S just went belly up I fear

[JimS]

It could also be the horizontal drive transistor.... you could try taking it to an old school tv repair shop, assuming you can find one.

[JimS]

When the flyback goes it often takes out the horizontal output transistor as well. Does anyone still sell flybacks for these? I also have one that went bad.

If you can translate the part number into a Phillips or Daewoo number, you might find one from a tv parts retailer. Back in the day, we ordered a couple that way. I think they came from a place called MCM electronics. They're probably getting much scarcer now, with LCD screens taking over.

[JimS]

Bad solder on the flyback can cause these troubles also. It is worth trying to resolder the connections to save it.
mech

Good point on the solder connections. Back when I was an Amiga repair guy, I saw so many solder failures, that I made it a habit to retouch those joints whenever I had reason to open up a monitor.