adamg67 Posted April 2, 2021 Share Posted April 2, 2021 I've got a Darkglass pedal with a nasty scratchy blend pot, as far as I can tell from a bit of searching it's not unheard of with their stuff (saw another Vintage Ultra v2 for sale on ebay with a scratchy master volume, which is the same pot). I tried contacting them but was completely ignored, which also seems like it's quite common if a pedal is out of warranty - I didn't expect it fixed, was just after help sourcing the right part. So I'm down to identifying it myself. It's a B100k opt but since it's on a PCB I really need to get something as close to exactly the same as possible. The pot is stamped "1849B104" bit that doesn't bring anything back with a Google search, or on RS, Farnell or Mouser. It looks like this: Code: Anybody recognise that? Quote Link to comment Share on other sites More sharing options...
PaulThePlug Posted April 2, 2021 Share Posted April 2, 2021 (edited) YH potentiometers... try google 1849b104 potentiometer pcb mounted and have a look at the images... https://www.alibaba.com/showroom/pcb-mount-potentiometers-4.html UK supplier may be more of an issue... try bourns for a similar same pin out / dimension? Edited April 2, 2021 by PaulThePlug Quote Link to comment Share on other sites More sharing options...
adamg67 Posted April 2, 2021 Author Share Posted April 2, 2021 15 minutes ago, PaulThePlug said: YH potentiometers... try google 1849b104 potentiometer pcb mounted and have a look at the images... https://www.alibaba.com/showroom/pcb-mount-potentiometers-4.html UK supplier may be more of an issue... try bourns for a similar same pin out / dimension? I should have thought of looking at the images, I'm wondering / hoping if it's actually an Alps Alpine as they might be easier to get https://uk.rs-online.com/web/p/potentiometers/7293505/ The metal top part looks the same as well. If not then yeah, the nearest Bourns is a good call. Quote Link to comment Share on other sites More sharing options...
itu Posted April 2, 2021 Share Posted April 2, 2021 (edited) B = linear, and 104 = 10 x 10^4 ohm = 100 kohm. 1849 has to be the manufacturer's code, but may indicate time like: year 18, week 49. Looks a lot like Alps, or Bourns, but it could be Alpha: http://www.taiwanalpha.com/downloads?target=products&id=113 A guess of the type: RD901F-40E1-15K-B100K-00D "single - bushing type - Knurled shaft - linear 100 kohm - with bracket" I may be totally wrong, but this type could get you close. Like here is the shaft: https://www.mouser.co.uk/ProductDetail/Alpha-Taiwan/RD901F-20-15F-B100K-00L1?qs=1mbolxNpo8cn%2BUYXjDefCw%3D%3D ...and here is the bracket: https://www.mouser.co.uk/ProductDetail/Alpha-Taiwan/RD901F-40-15K-B100K-00DL1?qs=1mbolxNpo8eYt7%2B5UsjE2Q%3D%3D Edited April 2, 2021 by itu 1 Quote Link to comment Share on other sites More sharing options...
adamg67 Posted April 2, 2021 Author Share Posted April 2, 2021 After going through lots of Alps, Alpha and Bourns pots, I've grabbed a Bourns that is very similar, just with a plastic shaft, we'll see how that goes. Quote Link to comment Share on other sites More sharing options...
mybass Posted April 2, 2021 Share Posted April 2, 2021 Omeg is/was a UK firm where I once sourced pots from......Sussex way I think. 1 Quote Link to comment Share on other sites More sharing options...
TheGreek Posted April 3, 2021 Share Posted April 3, 2021 I was wondering how many posts there would be on this stuff... Quote Link to comment Share on other sites More sharing options...
adamg67 Posted April 3, 2021 Author Share Posted April 3, 2021 1 hour ago, TheGreek said: I was wondering how many posts there would be on this stuff... I'm amazed it took so long as well. Although, it's fair enough that everyone assumed I wouldn't need help with that. Quote Link to comment Share on other sites More sharing options...
adamg67 Posted April 26, 2021 Author Share Posted April 26, 2021 I got this done, and I'm pretty happy with how it's turned out, for my second ever go at repairing a pedal anyway - I know it's amateur hour compared to the stuff many people on here can do, but you have to start somewhere. I wasn't happy with the Bourns pot I found so I looked again at alpha (I needed an alphas one anyway for another pedal) and found what looked like a close enough match at Thonk. Much easier to find the right one on their site than the big electronics places. The main difference is it's a D shaft not a knurled but it was easy enough to convert the knob to match. Other than that it was just a case of making sure the pot was held in position for soldering as it's sitting a bit higher than it naturally would, but with a bit of care that was easy enough. End result, one £360 (new) pedal that now works perfectly again. 2 Quote Link to comment Share on other sites More sharing options...
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