Hi, all.
I just bought my first arcade game, Tempest, and it works relatively well except for this nasty pincushion effect. I know that pincushion correction is handled by a pair of MC1495 chips on the main board, but before replacing them or looking for broken traces I wanted to ask the group if this amount of distortion is normal or not. I've adjusted all the pots on the boards, and nothing did anything to fix it. Shrinking the X/Y size had the effect of lessening the distortion, but it's really just a workaround. I'd like to solve it for real.
Also, there are some missing "dots" around the center of the display. Is this typical of an old monitor, or something that can be fixed?
Thanks!
Jeremy
I just bought my first arcade game, Tempest, and it works relatively well except for this nasty pincushion effect. I know that pincushion correction is handled by a pair of MC1495 chips on the main board, but before replacing them or looking for broken traces I wanted to ask the group if this amount of distortion is normal or not. I've adjusted all the pots on the boards, and nothing did anything to fix it. Shrinking the X/Y size had the effect of lessening the distortion, but it's really just a workaround. I'd like to solve it for real.
Also, there are some missing "dots" around the center of the display. Is this typical of an old monitor, or something that can be fixed?
Thanks!
Jeremy
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