Author Topic: FPS 2000 random volume change  (Read 136 times)

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Offline i_like_sparks

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FPS 2000 random volume change
« on: September 21, 2019, 11:28:28 am »
Hello,

I have one of these oldies but goodies:
https://assets.hardwarezone.com/2009/reviews/others/fps2000/fps-2000.htm

Unfortunately it has started to randomly change volume every few minutes. It usually starts after a 1-2 hourse of use. Any idea what might be the cause? It's rather hard to debug due to the randomness.
 

Offline benj38

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Re: FPS 2000 random volume change
« Reply #1 on: September 21, 2019, 11:37:35 am »
Bad connections or a bad speakers' relay (if the unit has one) are the first things that come to mind.
 

Online wraper

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Re: FPS 2000 random volume change
« Reply #2 on: September 21, 2019, 11:41:21 am »
Changes volume setting or just loudness with volume setting remaining the same?
 

Offline i_like_sparks

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Re: FPS 2000 random volume change
« Reply #3 on: September 21, 2019, 11:49:21 am »
Just the volume setting. It does have an external volume/on-off knob, so I suspect it might be the potentiometer, but didn't have much success in cleaning it yet. Also I'm still puzzled where the randomness comes from. It's not crackling or so, it just changes randomly every few minutes.
 

Online wraper

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Re: FPS 2000 random volume change
« Reply #4 on: September 21, 2019, 01:10:15 pm »
Just the volume setting. It does have an external volume/on-off knob, so I suspect it might be the potentiometer, but didn't have much success in cleaning it yet. Also I'm still puzzled where the randomness comes from. It's not crackling or so, it just changes randomly every few minutes.
Isn't it an encoder (can rotate indefinitely, no end stops)? Can it be disconnected?
 


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