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Question about Visonik VB212PKG Car Audio Amplifier

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Broken Potentiometer My vb212 has a broken/missing potentiometer on teh bass boost. I am not sure where I can find a schematic, or just the part. Can anyone help me? The part is called a C2K5X2. I think it is a 2k ohm pot. Any ideas?

Posted by John FInley on

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Contact the manufacturer in the owners manual or from where you purchased the unit from, ask them where or who the manufacturer is. Good Luck

Posted on Mar 28, 2007

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Preamp changing

This is not program/software error. This is hardware error.
Damage is on the potentiometer. usually caused by a bad contact inside the potentiometer. The most common is the preamp-TYPE potentiometer.Faulty potentiometer can also occur in the other,
depending on what we hear, when (suddenly) the bass sound bigger or smaller, it mean that BASS potentiometer was bad.
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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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If all else fails and you cannot find the correct pot for it then you might try using two resistors for each "layer" of the pot (there are probably two sections)that add up to 2K ohm and solder them in as a permenant setting to replace the pot. Maybe choose a value like 1.5K for one resister and .5K for the other. This would set your volumn to about three quarters of full. It's not necesarily a good solution, but it will get your amp going again. P.S. It may be a 2.5 K pot with two sections. Good luck.
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