Duff jamma board? Please help me.

Nostromo · Apr 17, 2007

I have just received "Ninja Gaiden" jamma pcb (bought it from ebay)... booted it up and it looked ok, RAM/ROM check 100% fine... that is until I started playing. I have noticed that certain sprites are corrupt, in a strange way. Vertical white lines appear on them only when a game character (player character or any other) goes 'behind' an object in the game, say, phonebooth. :blow_top:

I have no idea what to do at this point, should I send the board (which looks original) back to the seller (postage on this wasnt cheap, and I had to pay import duty too

), or there are a number of things I can do to fix it?

:help:

Thanks guys.

taitai · Apr 17, 2007

Nostromo said:
I have just received "Ninja Gaiden" jamma pcb (bought it from ebay)... booted it up and it looked ok, RAM/ROM check 100% fine... that is until I started playing. I have noticed that certain sprites are corrupt, in a strange way. Vertical white lines appear on them only when a game character (player character or any other) goes 'behind' an object in the game, say, phonebooth.

I have no idea what to do at this point, should I send the board (which looks original) back to the seller (postage on this wasnt cheap, and I had to pay import duty too ), or there are a number of things I can do to fix it?

Thanks guys.

Thoroughly clean it.

Nostromo · Apr 17, 2007

Sorry for the dumb question - how do I clean it? Do you mean the jamma connector or the whole lot?

Suggestions welcome, n00b style!

bwodie · Apr 17, 2007

you could clean the jamma connector
try lightly bending the board when the game is running... do the graphics get better or worse?
if so, you could reseat the eproms on the board, but there is going to be a fuckload to do.

werejag · Apr 18, 2007

remove each eprom and clean its legs and the socket with is isopropl and doesnt hurt to clean jamma

Nostromo · Apr 18, 2007

How do I apply the alcohol? With an ear bud?

Damn its gonna be some task

There are LOADS of socketable chips on this mobo.

werejag · Apr 18, 2007

qtips, tooth brush, etc

do each one. one by one and keep track of the way it came out

Nostromo · Apr 18, 2007

werejag said:
qtips, tooth brush, etc

do each one. one by one and keep track of the way it came out

Cool thanks - damn this is gonna be so much fun

The processor chip is huge

BTW, whats the best way to pull the eproms out without bending any of the legs?

Nostromo · Apr 18, 2007

I have reseated the eproms, it ddidnt do any differnce

I have also tried bending the board a bit with the game running, but it didnt do any difference either

Er, help?

Duff jamma board? Please help me.

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