AVA Pat-5 hum & static - troubleshooting help
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| Posted on September 5, 2020 at 10:06:57 | |
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Posts: 1
Location: CA Joined: September 5, 2020 |
I have a Audio by Van Alstine modified PAT 5 that I am running with a modified ST-70. I've had a hum/static issue for a while now and I think I've narrowed it down to the speaker stage of the PAT 5. First off when I plug the speakers directly into the ST-70 and use the pre amp set to any of the input sources (phono, tape, etc) there is no hum or static and works perfectly. Although when I direct my speakers through the PAT-5 speaker stage I get a hum when the volume is at zero. When I turn the volume up a static noise also appears. Also if I touch the bass knob (at any volume) the hum is accentuated. Lastly I unplugged the speakers but kept the connection from the amp to the pre-amp to check with headphones and the hum/static was the same. I'm a novice when it come to electronics so I'm not quite sure where to go from here. I'll probably end up taking it to a repair shop but wanted to see if anyone online had any thoughts or directions.
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| RE: AVA Pat-5 hum & static - troubleshooting help, posted on September 5, 2020 at 17:23:59 | |
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Posts: 665
Joined: December 29, 2012 |
Here's an AVA forum: https://www.audiocircle.com/index.php?board=48.0 If they can't talk you through the problem, then the only place I'd send it to is Frank Van Alstine himself. He's still in operation https://avahifi.com/pages/technical-support
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