need help determining monitor problem (amiga 1080)

[kemical]

I have a 13" amiga 1080 monitor that I've been using for a long time now and never really want to part with because the picture quality is excellent..

Problem is it has started to develop what looks like a horizontal sync issue, what happens is the top of the screen begins to slide further and further off to the right (the real top of the screen, not in tate), this leaves the picture curved from the top, down about 1/4th the way.

It doesn't occur with all jamma games, but when playing Raiden for example the longer the monitor is left on (several hours) the more severe the issue is. Usually I can remedy the problem by turning the monitor off then turning it back on, or adjusting the horizontal position dial. With other games the picture is completely scrambled along the top third of the monitor and turning the horizontal pos dial just sends it curving one way or the other.
It also happens on composite/separate input too.

Any ideas on what component might need replacing or where to look online? I've fixed a nanao monitor in the past that just needed a capacitor replaced based on info I was given.

[neorichieb1971]

Probably the same deal. Capacitors behave differently based on the temperature they are at. As they warm up you tend to see stuff on the screen go a bit wild if they are not performing well.

[PC Engine Fan X!]

I've got one of those original Amiga 1080 RGB monitors as well. It works just fine without any issues. On the back, it does have the DB-9 interface RGB input with an manufactured date of January 1986. It was made in Japan of all places so the craftmanship and build of it is excellent and no burn-in issues to contend with either. I didn't know that Commodore outsourced the manufacturing of it's Amiga line of computer accessories to Japan back in those days.

PC Engine Fan X! ^_~