Hi everybody.
I need some help on trying to fix a geometry issue I'm having on my arcade monitor:
Chassis: Pentranic CH-288
Monitor: Pentranic A68PNT18X Dual resolution monitor CGA/EGA
Here is an image of a Dot Cross Hatch on this monitor:
And here is a video of Super Street Fighter 2 on this monitor:
As you can see, the image is completely distorted on the borders. It gets really narrow.
I've played with all the image control pots for horizontal and I can widen and narrow the image, but the image on the sides is always distorted.
I've already replaced all electrolytic capacitors of the chassis with a new cap kit I purchased. After the cap kit replacement, nothing changed, the behavior is the same!
There is only 1 capacitor I did not replace because I'm a little confused about that one. It's C907. The cap kit came with a 4.7uF 100V cap (that is a very very small cap). Specs sheet tells that one is a 4.7uF 75V. So we are good there.
The thing is on my chassis I have a pretty BIG capacitor there that is an 8.2uF 200V??? It's this one:
This chassis has some pretty ugly jobs done in the past. Awful soldering work and I'm afraid whoever touched this thing put whatever capacitor he had at hand to keep the thing working in some way...
The thing is I don't know if that cap has some relation to the geometry issue I'm having or If I have to look somewhere else.
Any help will be much appreciated.
Thanks!