Question about Autotek MX3000.1 Car Audio Amplifier

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Autotek 7100 BTS series

I have an Autotek 7100 amp, BTS series. This is an older amp that works just fine except the "treble" gain potentiometer broke off. Can anyone help me with where I can get a replacement. The only identifying part number is
"B20K x2"

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  • 351wMUSTANG Jun 10, 2008

    I have an Autotek 7100 amp, BTS series. This is an older amp that works just fine except the "treble" gain potentiometer broke off. Can anyone help with where I can get a replacement. The only identifying part number is: "B20K x2"

  • Anonymous Mar 25, 2014

    amp goes straight to protection when powered

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  • 71 Answers

99% of pots are off the shelf items.
See a tech with a parts catalog and a soldering iron.
Labor will far out price, the part.
Experience ain't cheap.
Regards, Sumthin

Posted on Jun 11, 2008

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Disconnect from the mains.
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This was posted as an amplifier problem, but since you mentioned that the use of the treble (button?) on the guitar is causing the clicking, i would have the treble potentiometer checked first.

It could have a loosely soldered or broken wire on any of the tabs, oxydized slider contacts, bad ground (negative) connnection, possibly dirt or damage on the resistive track inside the pot.

A broken wire can easily be resoldered, but if there is internal damage or oxydation, the potentiometer should be either cleaned or replaced.

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