i-Cade 60-in-1, did I kill the sound?

Mike Valmike

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Donor 2012, 2014
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Hi folks.

I'm hooking up an iCade 60-in-1 in an empty cab, and it had a speaker, and I powered it up once and got rather loud sound, but on subsequent power-ups I get no sound at all. What did I do??!
 
I've toyed around with the wiring, no change. What would happen where I would get sound, loud and clear, and then on subsequent boots I would not get any? Undervoltage? Overvoltage? Before I start adjusting voltage pots I'm not sure if I fried the thing!

EDIT: Headphone jack works. For now I have a pair of PC speakers in there doing their thing.
 
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Sometimes stuff just dies.

Check the 12v power source going to the board. If bad, fix wiring or power supply or replace power supply.

Next, you probably have a bad cap between the sound amp and the board edge or a bad sound amp chip.
 
Is it possible the speaker itself died? Especially since you say it got loud at one point. Test using a AA battery and some jumper wires to the speaker with the board disconnected.
 
New PS, +12v is good. The speaker being dead is a genuine possibility. Checking further and thanks for the tips so far!
 
Hmm - I blew the sound out on a 19-in-1 today. I was putting the
board in a Defender. I made a harness so I wouldn't have to hack up the
original Defender harness.

Plugged everything in and it worked fine. Mounted the board, plugged
everything back in and no sound.

Mr. Idiot plugged the 4 pin power connector into the 4 pin speaker
connector instead (briefly forgot Williams used grey wires for +5 instead
of the red on the connector).

There's not too much to the Audio section. I'm hoping I only cooked the
TDA2003 and 470 uf caps.

JD
 
So, it looks like I biffed the sound chip and/or caps. I put the board in a working JAMMA cab and it still ran mute. Also, sound is VERY sensitive on this board; I changed out the speakers I was using in the headphone jack to ones with a volume pot on them, and it ran mute until I went to test menu, reset the volume, then rebooted. I guess the lesson is that this board is VERY connection sensitive when it comes to sound. +5v isn't an issue, it's at 5.2v smooth right now. It's running, notwithstanding that I had to use PC speakers and not the JAMMA audio out, so I'm going to follow the One Rule of Arcade Games that if it's working, leave it alone. :) Thanks all for your tips!
 
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