Need help: Hantarex Polo horizontal display decreases

[phulshof]

Hello all,

After a rather active weekend of arcading, it looks like my Hantarex Polo monitor is having some trouble. During the last hours of playing, the screen flickered a bit from time to time, and the horizontal display slowly decreased (the screen got narrower) while the vertical display increased (got taller), even to the point of 30-40 lines dropping outside the viewable area of the screen both at the top and the bottom. I've of course adjusted with the aspect ratio turn button, but even at maximum I still have 10-15 lines not showing up on the screen, and I don't know if this process will continue. Any idea what might be causing this? It seems as if the aspect ratio controller is deteriorating.

[grantspain]

it could be quite a few things,dry solder joints,leaky capacitors,failing h.o.t or a failing flyback transformer,hopefully it will just be a couple of dry joints.hantarex are very prone to all the mentioned problems,its just a case of starting with the least expensive and hope that will cure it

[Ken Layton]

Since it's a Hantarex, I'd say give it a capkit first.