Author Topic: Williams - World Cup 1978  (Read 209 times)

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Offline rocknrobin

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Williams - World Cup 1978
« on: July 13, 2010, 10:53:51 PM »
Have load buzzing noise coming from speaker, braided wire from speaker is disconnected.

Were is best location to earth it to to help stop annoying buzz.

Any Thoughts?

Cheers

Offline beaky

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  • Melbourne, Vic
Re: Williams - World Cup 1978
« Reply #1 on: July 14, 2010, 12:31:02 AM »
Have load buzzing noise coming from speaker, braided wire from speaker is disconnected.

Were is best location to earth it to to help stop annoying buzz.

Any Thoughts?

Cheers
Ground it to a ground point on the sound board, like the screws that hold the board in place.

i doubt that the braid on the speaker is causing the problem, i will look at some schematics for a system 3 and see if i can give you a better idea.

could be an issue with the amp section on the sound board or a faulty cap
On site pinball repairs in MELBOURNE NTH SUBURBS  : Circuit board repairs and refurbishing Australia wide (via Aust post)

Offline rocknrobin

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Re: Williams - World Cup 1978
« Reply #2 on: July 14, 2010, 01:14:18 PM »
Beaky,

Thanks I'll give it a go

Cheers and Beers

Robin.