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#373203 - 14/02/2021 23:41 Help me ID these potentiometers and switches
tfabris
carpal tunnel

Registered: 20/12/1999
Posts: 31390
Loc: Seattle, WA
I'd like to find Digikey ordering numbers for these guys, to order replacements, but my searches there aren't working, nothing is coming up which looks anything like what I've got here. Anyone know how to ID these? Photos attached.

These are parts from a joystick, Thrustmaster T-Flight HOTAS 4 model. The pots are for X/Y axis and the rudder rotation axis, and the switches are for the 4-way thumb-hatswitch.

Switches are temporary pushbuttons with a sort of a "click" to them when they are pressed. Potentiometers have a limited rotation travel range of about 270 degrees total, though I don't have an easy way to measure that accurately to be sure. I'm hoping that the printed codes on there are some kind of a clue to their detailed specs.

Thanks for any advice or help you can offer!


Attachments
Potentiometer - 9.9mm wide 01.JPG (15 downloads)
Potentiometer - 9.9mm wide 02.JPG (14 downloads)
Potentiometer - 9.9mm wide 03.JPG (10 downloads)
Pushbutton Switch - 6mm wide - 01.JPG (13 downloads)
Pushbutton Switch - 6mm wide - 02.JPG (12 downloads)
Pushbutton Switch - 6mm wide - 03.JPG (9 downloads)

_________________________
Tony Fabris

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#373204 - 15/02/2021 00:52 Re: Help me ID these potentiometers and switches [Re: tfabris]
K447
old hand

Registered: 29/05/2002
Posts: 760
Loc: near Toronto, Ontario, Canada
You may be interested in this repair service.

https://www.ebay.ca/itm/233195609114

I have used the bn880 repair service for a different electronic product and was entirely satisfied with the turnaround time, the pricing and the repairs. He works through ebay for the repair billing and initial communications.

I do not know if he would be willing to just sell the repair parts. Possible?


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#373205 - 15/02/2021 02:38 Re: Help me ID these potentiometers and switches [Re: tfabris]
mlord
carpal tunnel

Registered: 29/08/2000
Posts: 14272
Loc: Canada
These switches are similar, but not identical:

https://www.digikey.ca/en/products/detail/judco-manufacturing-inc/50-0014-00/307996
https://www.digikey.ca/en/products/detail/cw-industries/GPTS203212B/3190592

On Digikey, I searched for Switches -> Pushbutton Switches and then filtered with Mounting Type (Through Hole; Right Angle) and Circuit (SPST).

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#373206 - 15/02/2021 02:46 Re: Help me ID these potentiometers and switches [Re: tfabris]
mlord
carpal tunnel

Registered: 29/08/2000
Posts: 14272
Loc: Canada
For the pots, more info would be required to find a suitable match. Eg. the overall resistance (10K-Ohm?), whether it is linear (most likely) or logarithmic.

With that info, a Digikey search should be possible. They don't carry everything though.

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#373207 - 15/02/2021 13:32 Re: Help me ID these potentiometers and switches [Re: tfabris]
larry818
old hand

Registered: 01/10/2002
Posts: 1012
Loc: Fullerton, Calif.
For the pot, the B104 tells you it's a linear taper 100K.

Here's a similar pot that would probably work:

https://www.digikey.com/en/products/deta...pQFgBkACEAXQF8g

This part number is for the shaft with the flat, although the picture doesn't show that.


Edited by larry818 (15/02/2021 13:33)

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#373208 - 15/02/2021 20:40 Re: Help me ID these potentiometers and switches [Re: mlord]
tfabris
carpal tunnel

Registered: 20/12/1999
Posts: 31390
Loc: Seattle, WA
Mark, thanks for the switch links. Theoretically any momentary SPST switch will work as long as it's the same dimensions, so that is very useful.

I dismantled my troublesome switch under magnification, and it was a normal dome switch on the inside. It looked like it was manufactured with poor QC, and there was a lot of blackness on the dome and the contact points, as if the black plastic had outgassed or "bled" during the manufacturing. Cleaning it with isopropyl and re-assembling has made it work fine again, but I intend to order more replacement switches just so I have more on-hand so that future repairs are easier.
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Tony Fabris

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#373209 - 15/02/2021 20:48 Re: Help me ID these potentiometers and switches [Re: larry818]
tfabris
carpal tunnel

Registered: 20/12/1999
Posts: 31390
Loc: Seattle, WA
Larry, thanks so much for the ID of the pot. I was indeed hoping that the numbers printed on it would indicate its specifications. Where can I find a reference source for how to read those identification numbers? Some googling gets me a lot of links for guitar amps, and the larger pots in those amps seem to use different types of coding numbers. For example, though I see that "B" means linear taper, I don't see how "104" indicates 100K?

Thanks so much for the link, it will get me started on the right track. Though the particular pot that you linked doesn't look like the exact dimensions and shaft, I will start there and keep looking to find one with correct shaft/dimensions. You said that the picture doesn't show the keyed shaft, despite the part number being correct for a keyed shaft. I'm also concerned with the threaded neck, which might not fit the place where the joystick accepts the part. I'll keep looking to be sure I get the right part.

In the meantime, squirting some electronics solvent and isopropyl into the pot has gotten it working normally again. I will still find and order more replacements for the future: Cleaning only works on these things for a limited amount of time.
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Tony Fabris

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#373210 - 15/02/2021 20:51 Re: Help me ID these potentiometers and switches [Re: K447]
tfabris
carpal tunnel

Registered: 20/12/1999
Posts: 31390
Loc: Seattle, WA
K447, thanks so much for the link to that repair service. I will check them out.
_________________________
Tony Fabris

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#373211 - 15/02/2021 21:03 Re: Help me ID these potentiometers and switches [Re: tfabris]
mlord
carpal tunnel

Registered: 29/08/2000
Posts: 14272
Loc: Canada
104 = 10 with four extra zeros appended = 100000.

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#373212 - 15/02/2021 21:44 Re: Help me ID these potentiometers and switches [Re: tfabris]
larry818
old hand

Registered: 01/10/2002
Posts: 1012
Loc: Fullerton, Calif.
That alcohol will clean the pot but depraves it of any lubricant.

I use this stuff:

https://www.learchem.com/products/acf-50.html

I soak my new pots in it as they tend to wind up in corrosive environments. This stuff protects them and adds a lubricant layer much better than what they come with.

Yeah, what Mark said. Also, an A prefix is "Audio taper" and B is "Linear taper".

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#373213 - 16/02/2021 19:32 Re: Help me ID these potentiometers and switches [Re: larry818]
tfabris
carpal tunnel

Registered: 20/12/1999
Posts: 31390
Loc: Seattle, WA
Thanks so much, Larry and Mark, I'll see about finding some of that pot lubricant. Good information.
_________________________
Tony Fabris

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