Noisy ASAT Special

General Questions
Satchel68
Posts: 11
Joined: Sun Dec 19, 2010 7:49 pm

Noisy ASAT Special

Post by Satchel68 »

Recently purchased an early 90's ASAT Special. It's a very noisy / buzzing guitar. When I remove the control panel cover and touch the volume pot or tone pot, the buzz goes a away. I tried shielding the control cavity with aluminum foil tape but that increased the buzz. When the pickup switch is in the middle, the buzz drops significantly. When in the bridge or neck position, the buzzing is very loud.

Is it possible new pots are required? Is it preferable to have the all the cavities and pickguard shielded with copper foil? Are there any good ASAT Special shielding how to postings out there? I check You Tube but could not find any.

Thanks
louis cyfer
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Joined: Tue Oct 25, 2011 2:58 pm

Re: Noisy ASAT Special

Post by louis cyfer »

the noise is from you. you are the antenna. when you touch the back of the pot, you get grounded. you need to ground the bridge so you can be grounded the whole time. you may want to take it to someone, as this is obviously beyond your skill level/understanding.
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Miles Smiles
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Re: Noisy ASAT Special

Post by Miles Smiles »

Louis is right, the bridge has to be grounded, you may compare:
http://www.guitarsbyleo.com/GALLERY2/ma ... itemId=340

So, normally the bridge is grounded, so your ASAT has to be repaired, as we suppose, the buzz doesn't change, if you just touch the strings, instead of the pot.

Next, the main problem isn't you or the ASAT, but you environment. Check out which electrical device, does send that disturbances! If it's in your room or nearby the buzz may change it's volume as you change the distance between you and the source of the buzz.
Satchel68
Posts: 11
Joined: Sun Dec 19, 2010 7:49 pm

Re: Noisy ASAT Special

Post by Satchel68 »

The guitar buzzes when I'm not holding it. I know how to ground a bridge. Before I headed down the path of multiple avenues and limited time on my hands, thought I'd reach out to this site.
louis cyfer
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Joined: Tue Oct 25, 2011 2:58 pm

Re: Noisy ASAT Special

Post by louis cyfer »

Satchel68 wrote:The guitar buzzes when I'm not holding it. I know how to ground a bridge. Before I headed down the path of multiple avenues and limited time on my hands, thought I'd reach out to this site.
that is you causing the interference. without you getting grounded, you will cause the noise, you need to be grounded. of course other environmental factors play a role, but the guitar is perfectly fine if it is quiet when you are touching the strings.
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Craig
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Re: Noisy ASAT Special

Post by Craig »

Satchel68 wrote:Recently purchased an early 90's ASAT Special. It's a very noisy / buzzing guitar. When I remove the control panel cover and touch the volume pot or tone pot, the buzz goes a away. I tried shielding the control cavity with aluminum foil tape but that increased the buzz. When the pickup switch is in the middle, the buzz drops significantly. When in the bridge or neck position, the buzzing is very loud.

Is it possible new pots are required? Is it preferable to have the all the cavities and pickguard shielded with copper foil? Are there any good ASAT Special shielding how to postings out there? I check You Tube but could not find any.

Thanks
Also, check out the G&L Knowledgebase, G&L Tech Tips sub-forum.

Hope this helps.

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Satchel68
Posts: 11
Joined: Sun Dec 19, 2010 7:49 pm

Re: Noisy ASAT Special

Post by Satchel68 »

louis cyfer wrote:
Satchel68 wrote:The guitar buzzes when I'm not holding it. I know how to ground a bridge. Before I headed down the path of multiple avenues and limited time on my hands, thought I'd reach out to this site.
that is you causing the interference. without you getting grounded, you will cause the noise, you need to be grounded. of course other environmental factors play a role, but the guitar is perfectly fine if it is quiet when you are touching the strings.
That did the trick. The orginal ground was faulty. Wired a ground with a heavier gauge. Hum significantly reduced. Thanks for the info.