Headphone Volume Wheel

[that1crzywhtguy]

Sorry if this was already answered, I did search around and didn't see any definitive answer, but I was wondering if anybody had a recommendation for a replacement of the volume wheel. I've got a PC-Engine Duo here that's recently been restored (repair, full recap, region mod, etc...) and is in near perfect working order. Only issue is that the volume wheel doesn't seem to work. It does produce audio from the headphone port, but no volume control. Guessing if I just swap the wheel out, the problem would be solved.

Anybody know what ohm this wheel is?

Thanks!

[Vimtoman]

The GBA volume pot fits OK.

[that1crzywhtguy]

Now there's an idea. I was just thinking of purchasing a new one, but I do have a parts GBC laying around. Maybe I'll give that one a shot.

[that1crzywhtguy]

Okay tried that, and same problem. Headphone jack works, but no volume control. Also noticing now, sound never stops coming out of the Multi-port, even when headphones are plugged in. This isn't normal, right?

[SignOfZeta]

The headphone does not override the multi out, that part is normal.

As for the level control, I'd say you have a short somewhere that is effectively bypassing the pot. What mods have been done?

[Keith Courage]

I bet the pot that you tried is not setup the same way. Meaning the poles are different.

I know for a fact that a Sega Game Gear potentiometer will work but you will have to either slightly file out the opening on the casing of the duo or sand down the plastic on the potentiometer because it's larger than the original. much easier to file the opening on the duo a little bit bigger in my opinion. I've done this many times and it works great.

These are what I use now that I can't find a place that sells the original size for a decent price anymore. http://www.ebay.com/itm/B103-16x2mm-10K-Ohm-Double-Dial-Taper-Wheel-Duplex-Potentiometer-5Pcs-CP-/332068486203?hash=item4d50d2fc3b:g:Jm8AAOSw6DtYWedQ

Completely normal for sound to still come out of the AV jack even when the headphones are plugged in.


if you want one the original size that will work correctly and don't mind paying a little bit more then this is what you want.

 http://m.ebay.com/itm/RADIO-SHACK-271-0001-POTENTIOMETER-1K-OHM-MICRO-SIZE-50VDC-0-1W-2710001-/262838323166?hash=item3d326287de%3Ag%3A3QAAAOSwV0RXrzT~&_trkparms=pageci%253A697985e6-f8a6-11e6-8a66-74dbd1807f62%257Cparentrq%253A63a4cf9915a0a7873088a851ffedd774%257Ciid%253A1

[that1crzywhtguy]

Thanks for the info, very useful.

I happened to have had a parts Game Gear laying around too, so I gave that a shot. Works like a charm.

Guess that means that, FYI, GBC pots don't work.

[Vimtoman]

The GBA pot is the same pinout.
I've replaced two and all OK.

http://www.ebay.co.uk/itm/1x-New-Audio-Volume-Wheel-Potentiometer-Nintendo-Game-Boy-Advance-Color-GBA-GBC-/112296018435?hash=item1a255d4203:g:vJwAAOSwTglYmhOT

[that1crzywhtguy]

Good to know. I used the Game Gear one cause I had it on hand, but if I need to order one in the future, I'll go for that (as it doesn't require cutting of plastic). Thanks again.