Antifrodis
Member
I recently re-capped a WG 4901 chassis and replaced the flyback with a new one. This is the early 3 pot version of the chassis. I still have an issue where there are horizontal lines at the very top of the screen, and it is a bit squished and cut off at the top as well. I tried moving the vertical position jumper to all 3 positions, as well as slightly adjusting the vertical hold. No improvement.
I found an old thread where people say that the issue would be a mismatched yoke/chassis.
https://forums.arcade-museum.com/showthread.php?t=83994
Well, according to the information given in that thread, I appear to have the correct yoke for my chassis. The sticker on my yoke is marked 2021111194.
When I was installing the cap kit, I found two variances in caps. For C308, my chassis had a 3.3uf 50V and I replaced it with the 2.2uf provided in the kit. Also, for C313, my chassis originally had a 47uf 160v and I replaced it with a 100uf 160v, also provided with the kit. From everything I've read, the caps included with the kit are the correct ones. Would this be causing an issue? These two capacitor variances are noted in this old thread.
https://forums.arcade-museum.com/showthread.php?t=111159
Does anyone have a suggestion as to how to fix this problem? Thanks for any help.
I found an old thread where people say that the issue would be a mismatched yoke/chassis.
https://forums.arcade-museum.com/showthread.php?t=83994
Well, according to the information given in that thread, I appear to have the correct yoke for my chassis. The sticker on my yoke is marked 2021111194.
When I was installing the cap kit, I found two variances in caps. For C308, my chassis had a 3.3uf 50V and I replaced it with the 2.2uf provided in the kit. Also, for C313, my chassis originally had a 47uf 160v and I replaced it with a 100uf 160v, also provided with the kit. From everything I've read, the caps included with the kit are the correct ones. Would this be causing an issue? These two capacitor variances are noted in this old thread.
https://forums.arcade-museum.com/showthread.php?t=111159
Does anyone have a suggestion as to how to fix this problem? Thanks for any help.
