NBA Jam..jam

MaxD

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Hey guys, this seems like the appropriate place to ask for help with my cabinet.

Couple of years ago I bought an old NBA Jam cabinet, used it a bit...and then stored it in a shed for some years. Now that I've moved I got some more room so I wanted to hook it back up again, but it seems the disusage hasn't been that good for the old gal. I booted it up to find it wasn't on free play any longer and when I swapped to the maintenance menu it said the CMOS Chip Ram was bad. All the maintenance tests came back OK, but I was unable to restore factory settings or change anything to free play.

That doesn't sound too bad since I could theoretically just use coins all the time...but I live in Holland where we changed currency some 10 years ago and even the banks don't even carry the old coins anymore! This means my cabinet's effectively dead in the water :( I changed the flat pill battery on the board but no success.

I'd appreciate any help you experts could throw my way, I'm not that technical in replacing half the switches on the board but if you could point me in the right direction that'd be great!

Thanks in advance,

Max
 
There's two ways to put it on freeplay, one is via dipswitch settings and one is in the menu. If you track down the dipswitches, you can just set it that way.

Today's your lucky day. I just found them for you :)

On Dipswitch one, turn switch 2,3,and 4 'on'. Voila now you're on freeplay.

While you're at it, turn Switch 1 to 'off' so it'll boot up and go straight to the dipswitch settings without telling you that it can't load the CMOS settings.

After you've done that, On dipswitch 2 turn switch 7 off, and it won't even detect the error when it boots up because it won't run a test.
 
There's two ways to put it on freeplay, one is via dipswitch settings and one is in the menu. If you track down the dipswitches, you can just set it that way.

Today's your lucky day. I just found them for you :)

On Dipswitch one, turn switch 2,3,and 4 'on'. Voila now you're on freeplay.

While you're at it, turn Switch 1 to 'off' so it'll boot up and go straight to the dipswitch settings without telling you that it can't load the CMOS settings.

After you've done that, On dipswitch 2 turn switch 7 off, and it won't even detect the error when it boots up because it won't run a test.

This is the perfect solution for when your CMOS battery goes:) Which is my guess here.

The best way to tell is boot it up go into service menu make some changes do they stay while the game is still plugged in and turned on but go away after a power cycle? Chances are bad battery.

L
 
Re-read it, he said he already changed the battery. He also said he can't change anything in the service menu, because he has it set to dipswitch settings, probably.
 
Thanks for the advice, I'll go and tinker with the dipswitches a bit once this hangover of mine is over and I feel like a human being again :) I'll let you know how it ended, cheers!
 
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