Saiyenbreutus
New member
Hi all, so I just got my chassis back from being serviced after it stopped working.
When I got it back it has narrow white lines horizontally on it, I believe these are retrace lines but not a 100% about that. I have adjusted the screen (g2), contrast and sub bright to the best of my ability and can not get the white lines to go away. And even with the screen and bright turned way down the picture is still washed out. I'm thinking this part could be caps still needing replaced. But don't know what to think about the white lines.
Also the picture is too narrow and the H.width doesn't bring it out nearly far enough, still a few inches of black on each side. As far as the width, I can up the b+ Voltage and make the screen come out wider but I don't think this is the right way of doing it. My paper work shows the b+ should be at 129v on medium rez, and to get it to fill the screen it has to go up above 150v obviously that doesn't seem right, but I don't know enough to know what would need changed to fix this.
Monitor is a 33" pentranic a80pnt29x switchable cga/ega resolution. Chassis is a ch288, the game itself is Johnny nero action hero (lightgun game)
I had sent it up to Canada to Rick Nieman when it stopped working (no neck glow and was just clicking) and he was awesome about everything, seems like a great guy. But says it was working fine when he sent it back.
Here is a list of everything he did on it.
Replaced Flyback transformer, some of the electrolytic capacitors. As well as the small power board and the neck board (which appeared pretty scorched). The regulator and horizontal transistors were not original, replaced them as well.
The main culprit was the vertical IC and C396 also replaced.
I was curious about a second opinion from anyone here on what the problem might be. He's thinking the tube is shot. Seems crazy but I guess possible to happen suddenly. But he's one way smarter guy than I when it comes to this stuff.
I've attached a picture so you guys can see what the screen is doing.
On a side note, the guns aren't registering to calibrate now either, I'm assuming this is a monitor issue as well since the trigger registers and the screen flashes, but maybe out of sync or something?
When I got it back it has narrow white lines horizontally on it, I believe these are retrace lines but not a 100% about that. I have adjusted the screen (g2), contrast and sub bright to the best of my ability and can not get the white lines to go away. And even with the screen and bright turned way down the picture is still washed out. I'm thinking this part could be caps still needing replaced. But don't know what to think about the white lines.
Also the picture is too narrow and the H.width doesn't bring it out nearly far enough, still a few inches of black on each side. As far as the width, I can up the b+ Voltage and make the screen come out wider but I don't think this is the right way of doing it. My paper work shows the b+ should be at 129v on medium rez, and to get it to fill the screen it has to go up above 150v obviously that doesn't seem right, but I don't know enough to know what would need changed to fix this.
Monitor is a 33" pentranic a80pnt29x switchable cga/ega resolution. Chassis is a ch288, the game itself is Johnny nero action hero (lightgun game)
I had sent it up to Canada to Rick Nieman when it stopped working (no neck glow and was just clicking) and he was awesome about everything, seems like a great guy. But says it was working fine when he sent it back.
Here is a list of everything he did on it.
Replaced Flyback transformer, some of the electrolytic capacitors. As well as the small power board and the neck board (which appeared pretty scorched). The regulator and horizontal transistors were not original, replaced them as well.
The main culprit was the vertical IC and C396 also replaced.
I was curious about a second opinion from anyone here on what the problem might be. He's thinking the tube is shot. Seems crazy but I guess possible to happen suddenly. But he's one way smarter guy than I when it comes to this stuff.
I've attached a picture so you guys can see what the screen is doing.
On a side note, the guns aren't registering to calibrate now either, I'm assuming this is a monitor issue as well since the trigger registers and the screen flashes, but maybe out of sync or something?