Pentranic 1432 issues

[Cothien]

I am having three issues with the monitor of a new machine I got and looking for some help on how to fix the issues.

1) the video is stretched horizontal off the screen. This I think could just be adjusted with the horizontal coil, but i just need to get a tool to adjust it.

2) The video seems to be pin cushioned quite a bit and the adjustment knob seems to adjust it a little and not enough to straighten it out.

3) When in the cross hatch test (also happens all the time, but most noticeable in that test) the vertical lines constently shake and look like a lot of z's. I thought it might be the hold adjustments, but didn't seem to fix that issue at all.

I'm not sure if its a big issue or not, but the heat sink with the red arrow is really lose.


Monitors are not something I try to work on to much and normally stay away from arcade machines with monitor issues, but i couldn't pass up the nice price of free and thought it would be a nice place to start with monitor repair.

[lilshawn]

I am having three issues with the monitor of a new machine I got and looking for some help on how to fix the issues.

1) the video is stretched horizontal off the screen. This I think could just be adjusted with the horizontal coil, but i just need to get a tool to adjust it.

2) The video seems to be pin cushioned quite a bit and the adjustment knob seems to adjust it a little and not enough to straighten it out.

3) When in the cross hatch test (also happens all the time, but most noticeable in that test) the vertical lines constently shake and look like a lot of z's. I thought it might be the hold adjustments, but didn't seem to fix that issue at all.

I'm not sure if its a big issue or not, but the heat sink with the red arrow is really lose.

Monitors are not something I try to work on to much and normally stay away from arcade machines with monitor issues, but i couldn't pass up the nice price of free and thought it would be a nice place to start with monitor repair.

the answer to all three questions is... capacitors. You are in need of replacing about a dozen of them. It's quite common in this series. your best bet is to order a kit for it from one of the distributors. ir if you feel so inclined, replace anything larger than a nickel. a bipolar cap is the issue with your width. it's a 4.7uf 50volt or there abouts. a kit should only be about $10.

[Cothien]

the answer to all three questions is... capacitors. You are in need of replacing about a dozen of them. It's quite common in this series. your best bet is to order a kit for it from one of the distributors. ir if you feel so inclined, replace anything larger than a nickel. a bipolar cap is the issue with your width. it's a 4.7uf 50volt or there abouts. a kit should only be about $10.

Thanks. Thought it might be that, but always better to ask before spending a day doing cap replacements and finding out it was just a adjustment in the back you just over looked.

[lilshawn]

if you replace all the caps and the chassis decides to just click click click instead of starting up (which it often does after caps.), change c511 (it's on the little board sticking up at the back of the chassis.) change it up to a 220uf, it will allow the chassis to startup properly again.

if you still have width adjustment  problems after a capkit, remove R904 and change c908 to a "224" ceramic (0.22uf) capacitor. it will give you a little more room to play with to get it adjusted proper.

[StephenH]

You might contact Rick over at Nieman Displays.  He seems to know Pentranic monitors well.