Author Topic: Bad Dudes Vs. Dragonninja problems (Read 4372 times)

HaRuMaN · « **on:** March 17, 2006, 06:46:37 am »

I just got this board yesterday. When I play it, the mission screen (where it tells you about President Ronnie), the 1st stage background, the water in the 3rd stage, etc. are all garbled. I checked my voltages at the jamma connecter. At +5 its 4.98, at the -5 its -4.99, so voltages are not the problem. Does anyone know which rom chip I can look at to see if it isn't set properly? I'm not sure which one is responsible for backgrounds. Any ideas?

RayB · « **Reply #1 on:** March 17, 2006, 11:59:08 am »

Did you run a self-test?
Reseat all chips?
The voltage seems a litle bit low. You can usually go as high as 5.2. See if that helps.

HaRuMaN · « **Reply #2 on:** March 17, 2006, 12:15:24 pm »

How do you run a self test on it??

I did pull all the chips, and filed their legs gently with a nail file. After that I reseated them. No change.

I'll try going up to 5.2 volts and see if that does anything.

HaRuMaN · « **Reply #3 on:** March 17, 2006, 12:33:07 pm »

Upping the voltage did nothing.

The 12 volt lead is running at about 13 volts. Could that cause the problem?

grantspain · « **Reply #4 on:** March 17, 2006, 02:07:19 pm »

no,your voltages are correct.Unfortunatly i think you have a graphics ic fault,is it a single board or has it two layers?

HaRuMaN · « **Reply #5 on:** March 17, 2006, 02:12:41 pm »

Quote from: grantspain on March 17, 2006, 02:07:19 pm

no,your voltages are correct.Unfortunatly i think you have a graphics ic fault,is it a single board or has it two layers?

It has two layers.

RayB · « **Reply #6 on:** March 17, 2006, 03:12:45 pm »

Put the voltage back down closer to 5.0 now.

OK, look for broken traces, bloated capacitors, broken legs on part...

grantspain · « **Reply #7 on:** March 17, 2006, 03:56:35 pm »

this could be a classic dry joint issue,its gonna be difficult to prove-first reseat your boards and check for any spillage on the connectors or tracks

kjoel0123 · « **Reply #8 on:** March 17, 2006, 04:40:16 pm »

Have you tried cleaning the edge board connector? This sometimes works too. Have you tries another jamma board just ot make sure that you dont have a power issue?

grantspain · « **Reply #9 on:** March 17, 2006, 04:51:36 pm »

this is very similar to a fault i had with a daytona,all you need is one bad joint on an IC and you get all sorts of graphic problems,usually its with the surface mount chips and its very difficult to prove.

HaRuMaN · « **Reply #10 on:** March 17, 2006, 05:57:43 pm »

Quote from: kjoel0123 on March 17, 2006, 04:40:16 pm

Have you tried cleaning the edge board connector? This sometimes works too. Have you tries another jamma board just ot make sure that you dont have a power issue?

Could I use a computer power supply to test the board? This would let me know if my power supply is bad, right?

grantspain · « **Reply #11 on:** March 17, 2006, 06:05:08 pm »

its not a psu fault

SirPeale · « **Reply #12 on:** March 17, 2006, 08:58:56 pm »

Quote from: grantspain on March 17, 2006, 06:05:08 pm

its not a psu fault

Agreed.

Where did you measure the voltage from? Directly from the PS, or from the JAMMA, or from the PCB?

Best place to measure voltage on-board is on an empty socket. In the corners. Just make DAMN sure not to bridge anything when you do!

HaRuMaN · « **Reply #13 on:** March 17, 2006, 09:07:39 pm »

I measured the voltage from the edge connector of the board, right below the JAMMA connector.

Do I pull a chip to measure? And which corners do I choose?

SirPeale · « **Reply #14 on:** March 17, 2006, 09:31:43 pm »

Quote from: HarumaN on March 17, 2006, 09:07:39 pm

I measured the voltage from the edge connector of the board, right below the JAMMA connector.

Do I pull a chip to measure? And which corners do I choose?

Measuring where you did is fine (under the connector).

No, don't pull a chip to measure. If there's an empty socket, measure from corner to OPPOSITE corner. If you get a weird reading, switch corners.

If you're VERY CAREFUL you can measure on a chip, if all the sockets are full. Just don't bridge the pins, or you're not going to be happy.

However, since you measured 5V @ the JAMMA, I'm sure that's fine.

HaRuMaN · « **Reply #15 on:** March 17, 2006, 09:35:21 pm »

So what should my next step be in troubleshooting this?

SirPeale · « **Reply #16 on:** March 17, 2006, 10:15:57 pm »

You may have a bad ROM. You say 1st stage background is garbled, but how's the second stage?

HaRuMaN · « **Reply #17 on:** March 17, 2006, 10:22:36 pm »

1st stage background is garbled, second stage background is ok, third stage is ok except for the sewer, forest stage (4th) is ok, underground stage (5th) is garbled, train stage (6th) is ok, 7th stage is garbled.

SirPeale · « **Reply #18 on:** March 17, 2006, 10:28:32 pm »

Check out the ROMs. Check to make sure no legs are broken off. Check the solder side to see if any joints have broken.

HaRuMaN · « **Reply #19 on:** March 19, 2006, 11:29:40 am »

Will do $:-\$

HaRuMaN · « **Reply #20 on:** March 24, 2006, 02:57:49 pm »

I have checked everything... looked for broken rom legs, looked for broken traces, loose solder joints. I've come up with nothing. Any other ideas?

RayB · « **Reply #21 on:** March 24, 2006, 03:17:14 pm »

Ditch the board and buy a good game instead.

grantspain · « **Reply #22 on:** March 24, 2006, 04:16:11 pm »

I'm afraid its off to your local repair centre for that board,better off getting a different board like RayB says

HaRuMaN · « **Reply #23 on:** March 25, 2006, 06:44:11 am »

Quote from: RayB on March 24, 2006, 03:17:14 pm

Ditch the board and buy a good game instead.

But it's one of my favorites...

RayB · « **Reply #24 on:** March 25, 2006, 02:17:37 pm »

Wow. OK. Im sorry for saying that.

HaRuMaN · « **Reply #25 on:** March 25, 2006, 10:03:02 pm »

Well, good news... the ebay seller is taking it back, and sending me another Bad Dudes

Hopefully this one will work right, lol.

vib_ribbon · « **Reply #26 on:** March 26, 2006, 11:16:55 am »

lucky you.

yeah, good luck with the next one.

HaRuMaN · « **Reply #27 on:** April 19, 2006, 05:54:03 am »

Finally got the new one in the mail...

It works! Time to save President Ronny and get a cheezburger! wOOt!

RayB · « **Reply #28 on:** April 19, 2006, 12:21:04 pm »

Funny avatar.


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