Pacman Plus blue block around Pacman when he is facing upward?

kcase01

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Pacman Plus blue block around Pacman when he is facing upward?

Pacman Plus blue block around Pacman when he is facing upward or moving upwards. Test 2114 ram, all color proms and eproms but still can't get rid of the blue box around Pacman only when going up?
 

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blue blocked Pacman plus when moving up only.

Checked code for 5e and 5f. They are correct for Pacman Plus. Need to check sockets, but they seem fine toning them.
 
seems like a rom thing. if it were ram I think it would do it all around, as it would pertain to motion.

I can say this. I used to defend single wipe sockets in so I knew how to install chips in them properly. the last dozen boards I've worked on, you'd be surprised... even wiggling the pins back and forth they seemed fine. desolder the old socket out, the top half of the pin broke off!

as long as you have it narrowed down to 2 spots, I would just replace the sockets. before you do that, make sure there's no corrosion on the inner legs of the roms or that the roms have correct data, unless that was part of your testing.
 
Just a guess but are the ROMs at 5E and 5F good? Those are the graphics ROMs. Can you verify them at the website romident?
 
Checked them against mame roms and I they checkout good. Have to buy 24 pin sockets. Pending fix
 
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