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Old 6th April 2012, 06:18 PM   #1
maurycy is offline maurycy  United States
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Default Replacement for 200 Ohm variable resistor?

I am trying to find a suitable replacement for 200 Ohm variable resistor. The resistor is in Sansui AU-101 amplifier. Here is the information from the service manual:

200 Ohm (B)
Part # 1032021

Here is the schematic:
schematic

Here is the picture of the actual trim pot:
picture

Can I use any 200 Ohm trim pot as a replacement or the (B) means something? This VR is used to adjust bias in the amplifier. Sorry if this is a silly question.

Thanks.
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Old 6th April 2012, 06:52 PM   #2
Spiny is offline Spiny  United Kingdom
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the "B" designation means a linear variable resistor rather than a log (volume) type.
anything that will fit should do

alan
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Old 6th April 2012, 08:13 PM   #3
maurycy is offline maurycy  United States
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Thanks for replying.

Any idea what wattage/voltage should I go for?
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Old 7th April 2012, 04:44 PM   #4
Spiny is offline Spiny  United Kingdom
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From the photo its a carbon preset say @ 30mw / 100volt., IE as cheap as sansui could find

any of cemet / carbon presets will do, cemet would be @ 200mw to 500mw at that size.

something like 652-3309P-2-201 at Mouser would do, may need to bend its pins a bit. Its a bit of overkill compared to the original.

Last edited by Spiny; 7th April 2012 at 04:55 PM.
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Old 7th April 2012, 04:55 PM   #5
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These are commonly available.

Buy Trimmers, Potentiometer and Rheostat 10mm 1 turn carbon trimmer,220Ohm TE Connectivity CB10V 220R online from RS for next day delivery.
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Old 8th April 2012, 01:22 AM   #6
maurycy is offline maurycy  United States
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Thanks for replies. Will get the trimmer from Mouser next time I have to order something from them.
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