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Identifying Potentiometers?

ryankenn

Mar 21, 2014
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Mar 21, 2014
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Hello, I'm trying to re-create a mid 90's control for a car audio component of the same age. I don't have fantastic pictures yet, but someone is hopefully going to get me a shot of the trace side of the PCB so I can ensure its put together correctly.

The caps, resistors and phone jack are easily identified. The diodes are all the same but other than I and 002 I can't really make out what they are, and I'm hoping clearer pictures will be able to solve them.

The potentiometers are the issue. I'm not familiar with them at the best of times, but these have me totally at a loss. I don't need exact package, just something that will work in the same way, radial though as I'm going to custom mount them.

From what I can make out the larger is 333F V10KBX2, the smaller 204F V10KBX2. Searching and trying to understand the P/N's I assume they are V10K? Volume, 10K resistance? Don't know how to tell if that is right, or what the range, so I'm reaching out here.

Any links/advice is welcome, and thanks again,
Ryan

 

shrtrnd

Jan 15, 2010
3,826
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Jan 15, 2010
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Just a guess here, better pictures would help.
Could the diodes be 1N4002?
If you Googled the pots, some place called Oak Tree Enterprises says they have them
for $25 each (Which is unsually high).
Do you have an ohmeter, to determine the resistance of the pots (or know somebody
who does) so you can find a physically comparable replacement.
My GUESS, is that the 333F is the mfgr date 2003, 33rd weekd of mfgr.
204F probably 2002, 4th week of mfgr.
Don't recognize the mfgr by the part number, but it probably is 10K ohms, with mfgr
code for model.
If you look for equivalent replacements, I'm also guessing they're 'AUDIO TAPER' , and
not Linear Taper. You'll be able to determine that with an ohmeter.
Close pictures, will help you get more precise answers.
Good luck.
 

ryankenn

Mar 21, 2014
2
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Mar 21, 2014
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Thanks, good to know those first numbers are essentially nothing as it was really confusing to me. From some other sources its been suggested the 10K is 10K ohm, the B is linear (A is logarithmic) and X2 is the dual gang nature of the pot.

Is the large metal housing strictly to stabilize it on the board? If the P/N is correct, both are essentially the same spec, but why they needed the large design of the one is something I don't know. The smaller side of the PCB still has the mounting holes for that design, but its just a smaller pot.
 

shrtrnd

Jan 15, 2010
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I don't know with info available, but the 'Oak Tree' website said the pots are 'treble control', which I would think would probably be an audio pot.
Typically, the size of the pot is a function of the wattage it has to dissipate.
The 'X2' can be used to designate a dual-ganged pot. (but that's not what I see here).
The 'BX2' is something used by the mfgr to identify the model of their pot.
I would think there is something inside the metal box, for RF shielding. As long as
it's there, it's not uncommon for a mfgr to use tabs on it as a mount for something else, like the pot.
I'm just guessing here. You might send an email to that Oak Tree Enterprises website
with a query about the pots, they may have more complete specs on them.
 
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