Free: broken but possibly fixable sync-on-green monitor

[Tony Duell]

> Actually the most common thing I've seen short of a complete horizonal 
> output failure is the CRT focus pot and associated resistor string fails.

Out of focus and ;'smeared' look totally different, though. But then 
again the general public never were much good at describing faults :-)

> It's a gradual failure and for most color monitors that's part of the 
> HV transformer assembly.  A few I'e stretched the life by adjusting 
> the focus but sooner or later it fails and the images are just plain 
> fuzzy. 

It happeend to me in an Amstrad VGA monitor. I managed to get the flyback 
transformer, fitting it completely cured the problem (of course). 
Fortuantely I had the sense to do a continuity check on the flyback pins 
-- the first one I was supplied with was totally incorrect and would have 
connected the CRT heater to the 95V line.....

I heard of somebody taking a hacksaw to a flyback to cut away the 
connections ot the focus network, sealing the cut ends with epoxy or 
corona dope, and hanging an external voltage divder off the 25kV anode 
output. I've not been that desparate -- yet!

-tony