No left audio on MV-1?

atarijaguar · Mar 18, 2015

On my MV-1 I only get audio on the right speaker.

I've tried both the headphone and speaker output as well as toggeling the mono/stereo switch.

The interesting part is that the audio from the JAMMA harness is indeed a proper mix of left and right channel sounds but in mono.

Does anyone have any suggestions to further diagnose what the issue might be?

Thanks!

Xian Xi · Mar 19, 2015

You probably need to recap the audio section.

channelmaniac · Mar 24, 2015

Flip the mono/stereo switch back and forth a few times. If that's not it then recap it.

atarijaguar · Mar 27, 2015

Xian Xi said:
You probably need to recap the audio section.

Any suggestions where to purchase a cap kit?

DarkRider · Mar 28, 2015

I'd be interested in this also. I got a 4 slot about a week ago. Certain audio is missing on mine and what audio I have has a lot of static. I've been hunting for a cap kit and haven't had any success finding one.

channelmaniac · Mar 30, 2015

atarijaguar said:
Any suggestions where to purchase a cap kit?

I have them on my site: arcadecomponents.com

Ordering was off while I was in Europe last week and I built a metric crap ton of kits over the weekend to replenish stock.

DarkRider said:
I'd be interested in this also. I got a 4 slot about a week ago. Certain audio is missing on mine and what audio I have has a lot of static. I've been hunting for a cap kit and haven't had any success finding one.

Sounds like yours isn't a cap issue. Sounds like a YM2610 chip problem.

Atro · Mar 31, 2015

DarkRider said:
I'd be interested in this also. I got a 4 slot about a week ago. Certain audio is missing on mine and what audio I have has a lot of static. I've been hunting for a cap kit and haven't had any success finding one.

Check if one of your channels on the Jamma edge doesn't have a cut trace and tied to ground.
A lot of operators ( butchers, I may add ) used to "adapt" MV4's this way to put them on regular Jamma cabs.

DarkRider · Mar 31, 2015

Atro said:
Check if one of your channels on the Jamma edge doesn't have a cut trace and tied to ground.
A lot of operators ( butchers, I may add ) used to "adapt" MV4's this way to put them on regular Jamma cabs.

I don't remember seeing a cut trace on the board when i took the machine apart, but I'll double check later tonight. That also makes me think, if it has a jamma wiring harness in it with the different audio pinout could that cause it? I never checked the connector itself to see if it's a jamma harness or an mvs harness.

channelmaniac said:
Sounds like yours isn't a cap issue. Sounds like a YM2610 chip problem.

Channel what's the best way to test the chip? I'll take a look at the traces around the chip but I'm not sure the best way to tell if the chip has gone bad.

channelmaniac · Mar 31, 2015

You clean the cart and the slot really well. If you still have missing or incorrect sounds then replace the chip.

DarkRider · Apr 6, 2015

Well, seems like Channel is right. I wanted to recap the board anyway to have it done, and did my monitor at the same time. Got everything hooked back up and the sound is still screwed up. At least the monitor looks good.

Where is the best place to find one of those chips? China by way of eBay?

DarkRider · Apr 18, 2015

channelmaniac said:
Sounds like yours isn't a cap issue. Sounds like a YM2610 chip problem.

Channel, I love you and want to have all of your babies. Seriously though, I bought a new chip from China. I removed the old chip last week while I was on vacation and put a socket in. New chip showed up today and I dropped it in. It now sounds amazing! Thank you.

No left audio on MV-1?

atarijaguar

n00b

Xian Xi

JammaNationX,

channelmaniac

Mr Neo Fix-it

atarijaguar

n00b

DarkRider

n00b

channelmaniac

Mr Neo Fix-it

Atro

Who?,

DarkRider

n00b

channelmaniac

Mr Neo Fix-it

DarkRider

n00b

DarkRider

n00b