CPS2 No Signal but Coin Counter Increasing

[fake]

Hey guys,

I fired up the cab today and am not getting a signal on my on battery CPS2 game. However the counter increase by 5. Did it suicide? I thought the battery had a lot more life let in it. My other CPS2 stuff works fine.

 

[fake]

Update:
The A board doesn't even turn on anymore – no fan, no coin counter.
Switching the B board to a different A board - boots up but no signal.

 

[egg_sanwich]

Have you tried a different cab? Or checked the voltage at the jamma edge? CPS2 are pretty power hungry.

 

[ChuChu Flamingo]

Check 5v some cps2 boards vary quite a bit in their power consumption.

 

[fake]

Check 5v some cps2 boards vary quite a bit in their power consumption.

Would it suddenly stop working like that? And if that were the issue, wouldn't the game work on my other A board? Also I’m a dummy. How do I check that 5v?

 

[ChuChu Flamingo]

Some b boards in my collection do draw a tad more. I think it depends on the revision. Basically tou get a wlectrical tester a cheap one will work. Set it to dc 20 volts. Black prong on pin 1 of jamma harness red prong on pin 3 of jamma harness

 

[fake]

Thanks - I ordered one. Really gonna be sad if the b board is fried.

 

[egg_sanwich]

Thanks - I ordered one. Really gonna be sad if the b board is fried.

It could be that your psu needs a recap (or adjustment if you have that option) as it's not putting out sufficient voltage. Try the board in another cab if you can.

 

[fake]

@ChuChu Flamingo I got the voltmeter but am having trouble making contact because of the A board encolusre. Gonna have to get that type of screwdriver and open it up I suppose.

 

[ChuChu Flamingo]

You can stick your probes where the wires go in. Just be careful not to nick your wires.

 

[fake]

You can stick your probes where the wires go in. Just be careful not to nick your wires.

Thanks - I got it to read 4.86, so you may be onto something. There power supply doesn't have any controls on it, so I'll have to figure out how / if I can adjust it.

Edit - got it. I’ve adjusted it to 5.35 and still no dice. I’m assuming going any higher is dangerous?

 

[wyo]

Thanks - I got it to read 4.86, so you may be onto something. There power supply doesn't have any controls on it, so I'll have to figure out how / if I can adjust it.

Edit - got it. I’ve adjusted it to 5.35 and still no dice. I’m assuming going any higher is dangerous?

Yeah, even 4 and 6 slot MVS boards don't need more than that at the JAMMA edge.

 

[fake]

Yeah, even 4 and 6 slot MVS boards don't need more than that at the JAMMA edge.

Thanks. I'll dial it back to 5w. FWIW, the motherboard does now work with the other B board I have on hand. I'm hoping this means that the B board just suicided and isn't fried. I have an Infinikey, but does that have to be installed before a board suicides? Or can it serve as an alternative to a phoenixing job?

 

[Neodogg]

I believe you can key them after suicide.
Typically you don’t want you psu running over 5.2v

 

[ChuChu Flamingo]

Yes it restores the key

 

[fake]

For posterity:
I got this board working again the an Infinikey. I believe that the security code was corrupted somehow, because even after installing the Inifinikey at first, I got the same red screen. But after manually draining the caps (and therefore zeroing out the saved security code), it ended up working.

 

[heihachi]

Infinikeys are pretty awesome. It’s too bad they’re sold out everywhere now. At least you only need one to get suicided boards back on battery if you want.

 

[skate323k137]

Infinikeys are pretty awesome. It’s too bad they’re sold out everywhere now. At least you only need one to get suicided boards back on battery if you want.

It's basically open source at this point, different project but same function. Or CPICS2 which is just a PIC and bodge wires.

 

[fake]

Infinikeys are pretty awesome. It’s too bad they’re sold out everywhere now. At least you only need one to get suicided boards back on battery if you want.

Yeah, I'm lucky I had that one. I wish I had it when my AVP died though - ended up phoenixing that one. All of my CPS2 games are now all set (Zero 2 is still on battery but I just swapped it recently) but I'll probably grab a few if they make more.