naomi 1 i/o jamma board error

[OldFoo]

Hello





well i have a big problem ..when i swich on my arcade machine with naomi 1 and virtua tennis i have after 1- 2 min i/o jamma board error



i thought it was the tension 5v or 3.3 or 12 v but ok

after i change for new one Capcom I/O Jamma Converter and same problem

so i thought it was the naomi board ( with power supply on it , so i bought a new used one and same problem



after i change the epr rom for all other i have and same problem

after i remove the cable and video board and same problem

after i change to another arcade board and same problem

after i change to others game and i/o board defecting problem appear immediatly



so so i really dont know now

it could be the cable ???? cut signal and appear i/o board error jamma ???? i really think but i tryed with 2 other cable and same problem



i tryed with i/o power supply system ( with power supply computer an ssimple i/o )



so some ideas ..i am to the end of my knowledge ;-0



waiting news from expert naomi boards



thanks

[OldFoo]

Is there any code with that error? That would be important.

[OldFoo]

Is there any code with that error? That would be important.

no nothing more than this



jamma board i/o error



very amazing

[OldFoo]

Ok, then try using another USB cable. I had a problem with an error like this once and it drove me crazy. Turns out the USB cable was the problem.



Go figure. :smt101

[OldFoo]

Ok, then try using another USB cable. I had a problem with an error like this once and it drove me crazy. Turns out the USB cable was the problem.



Go figure. :smt101

well i found the problem i think



i tested my board and i/o board with

virtua tennis and this problem appear.

So seems to be a game board problem



i i tryed with another usb cable and same problem



so i will try with another game for check

[ruisantos45]

hi, i have the same problem:/...do you have good news?