Mushihime sama pcb doesn't work (help please)

Ken · Post by **Ken** » Sat Jan 05, 2008 10:30 pm

I thought somebody here might recognise this problem and hopefully you'll be able to help. I have a New Astro City cab and when I play other games it works perfectly. Somehow Mushihime sama just doesn't work anymore.

When I turn it on, a small red light flashes on the PCB board and also a small red light inside the cabinet flashes on and off. The screen is black with very small fractions of light.

Does anybody know what happened? This game played without any problems before, at least at other cabs I had (don't have that cab anymore where it worked on). I owned Espgaluda II before and I think it also didn't play that one, but I'm not 100% sure.

Hope somebody can help me out here, thanks.

sven666 · Post by **sven666** » Sat Jan 05, 2008 10:33 pm

maybe your JAMMA is not fully loaded with the required ground wires?

Post by **Dave_K.** » Sat Jan 05, 2008 10:33 pm

Should move this to Hardware.

Can you check your +5 and +12 voltage on the jamma harness with the game plugged in? Flashing light inside the power supply means its being reset or gounding out. If you have another Cave SH3 board to try, or another cabinet to plug the board into, that would go a long way to seeing whats wrong.

Ken · Post by **Ken** » Sat Jan 05, 2008 10:46 pm

Well like I said I believe newer Cave boards gave problems with the cab, but I only have one newer board to check it with (Ketsui and Espgaluda work fine).

What can I do to resolve this? I have no idea how I can check 5 or 12V, I am a tech noob.

Post by **Dave_K.** » Sat Jan 05, 2008 11:19 pm

Post your location and ask if anyone local can help. May also want to ask for local assistance on neo-geo.com (seems to be a wider audience than here).

Ken · Post by **Ken** » Sun Jan 06, 2008 10:31 am

Well you see I live in the Netherlands and there is nobody here who likes CAVE stuff as much as I do really....

djvinc · Post by **djvinc** » Sun Jan 06, 2008 10:49 am

I saw something like that on an ESPGaluda2 and an Astro cab, and this was because of the Power Supply.
In this case, it did not harm the PCB, I moved it to another cab and it worked.
I don't know really how to fix this, but you should test the PCB someplace else.

Ken · Post by **Ken** » Sun Jan 06, 2008 11:12 am

Well you see I owned another Astro City and it worked perfectly on that one. I sold that one though and only have one cab left for now...

There must be a way to fix this...

Radiant · Post by **Radiant** » Sun Jan 06, 2008 11:43 am

JAMMA Connector
http://www.arcadetreasure.com/techinfo/jamma_pinout.gif

take a voltmeter put it to 20 DCV and put the black wire to ground and the red wire to +5V
http://ebay.prnc.net/Resources/voltmete ... 20x332.jpg

I would do it without PCB , just the jamma connector (4,95-5,1V should be ok)

Ken · Post by **Ken** » Sun Jan 06, 2008 12:27 pm

Okay I will try this. What could be the outcome and is there a way to fix it when you know the results of this test?

Radiant · Post by **Radiant** » Sun Jan 06, 2008 12:33 pm

you should get 5-5,1 V
-If not try to adjust your PSU to this value
-If you already have it, try to get a supergun for testing or send the pcb someone for testing.....

Ken · Post by **Ken** » Sun Jan 06, 2008 12:47 pm

This might be a ridicilous question but how do I adjust the CPU value?

Radiant · Post by **Radiant** » Sun Jan 06, 2008 1:31 pm

not CPU...PSU = Power supply of your cab
I don't have a New Astro city, so you should ask one of the owners here, or ask on Killercabs
http://www.killercabs.com/forum/viewtop ... 192#131192
but from what i can see it should be the round controller next to the powerswitch (2nd pic, the PSU is the thing with the 2 red buttons on it BTW)
Do the adjustments without a PCB like this...(also measure it like this)

Ken · Post by **Ken** » Sun Jan 06, 2008 2:03 pm

Ok cool thanks a lot Radiant. My buddy knows a bit or two about this too and we will measure everything next week so I will let you guys know what happened.

Ken · Post by **Ken** » Fri Jan 11, 2008 7:58 am

We checked the voltage and it changed from 2 to 4 V all the time and still didn't work after changing the voltage to 5.1. It again changed, also on the PCB itself.

At my buddies' cab it didn't work either, he has a Neo Candy.
Why did it work in my old cab, and why not now....we stand before a mystery..