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SAE 3000/3022 Balance control

[email protected] All Messages By This Member #17241 I hope I’m not posting something everyone already knows, but I wanted to share my recent experience tracking down a balance slider for my 3022. After many google searches, I stumbled across a vendor that was selling unidentified slide pots that had the same physical appearance as my dual element,100k balance slider. The tip of my slide pot lever was broken off so I purchased the 50k pot that was available. I was able to rebuild the pot by swapping the lever/contact part. While I had the original pot out I was able to see the p/n and manufacturer. Need a magnifier, and good light but it’s there! Alps p/n 84M-100kMN. There is someone selling these on eeeeeebay if anybody is looking for one. Just search that part number. Side note: Bourns makes one that would work, but I would have to order 500 since no one stocks them!
Jerry Nutter All Messages By This Member #17243 开云体育 Tom- Excellent detective work! You’ve also hit on one of the most frustrating things in the repair field: Parts that are technically still in production, but only available in large quantities and long lead times. Jerry Nutter Audio Carpetorium, LLC 111-32 112 St South Ozone Pk., NY 11420 (718) 738-2549 "I make the mistakes, so you don't?have?to."
Mark Gurries All Messages By This Member #17242 开云体育 Great detective work. On Dec 12, 2018, at 6:53 AM, tomjac60@... [SAE_Talk] <SAE_Talk@...> wrote: I hope I’m not posting something everyone already knows, but I wanted to share my recent experience tracking down a balance slider for my 3022. After many google searches, I stumbled across a vendor that was selling unidentified slide pots that had the same physical appearance as my dual element,100k balance slider. The tip of my slide pot lever was broken off so I purchased the 50k pot that was available. I was able to rebuild the pot by swapping the lever/contact part. While I had the original pot out I was able to see the p/n and manufacturer. Need a magnifier, and good light but it’s there! Alps p/n 84M-100kMN. There is someone selling these on eeeeeebay if anybody is looking for one. Just search that part number. Side note: Bourns makes one that would work, but I would have to order 500 since no one stocks them! Best Regards, Mark Gurries Electrical Engineer DCC Website & NMRA DCC Clinics:
[email protected] All Messages By This Member #17244 Kind of fun in some ways, but there was definitely some frustration involved!
Craig Tathwell All Messages By This Member #17245 Luckily there not that many "special" parts in SAE, GAS, or SUMO preamps and amplifiers, the tuners are different story. I just finished a MKVI tuner a few weeks ago for the original owner, lots of special RF/IF parts in that unit. It did take a couple tries to get the correct O'ring for the tuning mechanism, McMaster-Carr to the rescue. Craig
john vogt All Messages By This Member #17246 HI Craig, Speaking of the MK VI, I have a MK VI that had a defective front end and 1st IF stage that I was able to repair. The unit had 2 defective FETs and a defective CA3053. I drew up the schematic of the insides of? the front end and also found an alternate FET to use as the originals were made of unobtanium. Can send you a copy of the schematic if you like. John
Mark Gurries All Messages By This Member #17249 开云体育 I have not looked but I recently learned SAE's new old stock of part like these and switches went to a surplus parts store. ? All Electronics On Dec 14, 2018, at 1:50 AM, atmer@... [SAE_Talk] <SAE_Talk@...> wrote: HI Craig, Speaking of the MK VI, I have a MK VI that had a defective front end and 1st IF stage that I was able to repair. The unit had 2 defective FETs and a defective CA3053. I drew up the schematic of the insides of? the front end and also found an alternate FET to use as the originals were made of unobtanium. Can send you a copy of the schematic if you like. John Best Regards, Mark Gurries Electrical Engineer DCC Website & NMRA DCC Clinics:

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