Author Topic: Intermittent sound on Tri Zone (Williams System 6)  (Read 182 times)

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Offline goodolddays

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Intermittent sound on Tri Zone (Williams System 6)
« on: February 20, 2012, 05:33:12 PM »
Symptoms :- Pressing test button gives sound every time but in gameplay there is no sound unless you reseat the connector to the speaker , then sound will work for a while but sooner or later drops out again.

All connectors have previously been repinned (except the speaker connector) .
I thought the speaker connector might be the problem but can't see how given every time you press the test button you get sound.
When I got this game a few years ago there was no sound at all, I replaced the CPU and sound Proms with new ones at that time .
Have also reflowed all the connector pins on the board a while ago.

Anyone got any suggestions ?
Would love to finally fix this annoying fault.
I need more room ! and more $$$

Offline Extra Ball

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Re: Intermittent sound on Tri Zone (Williams System 6)
« Reply #1 on: February 20, 2012, 05:40:06 PM »
change the caps, and if no joy maybe the amp, but these are just suggestions