Hello,
I own aTandberg receiver TR2075. The volume potentiometer is used and needs to be replaced. I can't find any good reference to replace it.
Does anyone have an idea to either find/repair this piece (an address, a specialist, ...) or replace by a potentiometer of equivalent value. It is a 2 x 25 Kohm logarythmic ?
Thank you
Fred
I own aTandberg receiver TR2075. The volume potentiometer is used and needs to be replaced. I can't find any good reference to replace it.
Does anyone have an idea to either find/repair this piece (an address, a specialist, ...) or replace by a potentiometer of equivalent value. It is a 2 x 25 Kohm logarythmic ?
Thank you
Fred
I am on the case.
I'm about to rebuild some good ALPS-pots, to include the Loudness-tap at the centre.
Quite tricky as I have to make some mechanical adjustments aswell.
The finished produckts will cover all TANDBERG-radios.
I'm about to rebuild some good ALPS-pots, to include the Loudness-tap at the centre.
Quite tricky as I have to make some mechanical adjustments aswell.
The finished produckts will cover all TANDBERG-radios.
Volume pot replacement for Tandberg TR2075 or TR 2080
My volume pot of Tandberg TR2075Mkii is defective.
Has anyone a source for a repalcement pot?
Thanks for any suggestion
Peter
My volume pot of Tandberg TR2075Mkii is defective.
Has anyone a source for a repalcement pot?
Thanks for any suggestion
Peter
I read that post late, sorry.
Is there a particular reason why you would need to replace that pot, rather than desolder it and clean it or maybe "repair" it? Pots like these are rather sturdy, even after many years, except if they have been abused.
I own a 2045 and if it's the same kind of potentiometer on your 2075 (from 2030 to 2080 that all have nearly the same components), it is rather easy to do. I guess that if you're ready to replace it then it will be easy to take it apart and look how it can be fixed...
I did that same operation recently because even with deoxit, it was still dysfunctionning once in a while. Desoldered it, cleaned it thoroughly with white spirit and a toothbrush, checked the movement and resistance from one side to another and when it was "fluid", I put it back into place. It works perfectly since.
But of course if it is physically broken, you'll have to find a new one with same resistance scaling and if possible same pins position (that's the most difficult task). And my advice will be totally useless 😉
Is there a particular reason why you would need to replace that pot, rather than desolder it and clean it or maybe "repair" it? Pots like these are rather sturdy, even after many years, except if they have been abused.
I own a 2045 and if it's the same kind of potentiometer on your 2075 (from 2030 to 2080 that all have nearly the same components), it is rather easy to do. I guess that if you're ready to replace it then it will be easy to take it apart and look how it can be fixed...
I did that same operation recently because even with deoxit, it was still dysfunctionning once in a while. Desoldered it, cleaned it thoroughly with white spirit and a toothbrush, checked the movement and resistance from one side to another and when it was "fluid", I put it back into place. It works perfectly since.
But of course if it is physically broken, you'll have to find a new one with same resistance scaling and if possible same pins position (that's the most difficult task). And my advice will be totally useless 😉
Volume pot for Tandberg receiver TR2075Mkii
Hello perelman and community.
Thank you for your answer and suggestions related to the replacement of the volume pot for the Tandberg TR2075Mkii. I asked for a replacement type, because even in the full counter clock wise position, the audio is still hearable, meaning the minimum volume is not zero. As TANDBERGEREN wrote, he is rebuilding ALPS-pots to include a loudness-tap, which can be used for all Tandberg receivers, I hoped there may be a direct replacement for the original Tandberg pot. Meanwhile, I have found and bought a replacement pot, which fits electrically (ALSP RH2702 50k AX2 for about 7USD from China). This pot has 2 parallel channels each 22 discrete positions with quasi exponential behaviour, meaning change for low volume is small, while increasing when turning to louder and a tap at about 5,6kOhm. I did not yet have the time to assemble this pot as replacement of the original pot. Will report the result as soon as available. Nevertheless, I am still interested in a direct replacement volume pot for the Tandberg TR2075Mkii as a fall back solution.
Peter
Hello perelman and community.
Thank you for your answer and suggestions related to the replacement of the volume pot for the Tandberg TR2075Mkii. I asked for a replacement type, because even in the full counter clock wise position, the audio is still hearable, meaning the minimum volume is not zero. As TANDBERGEREN wrote, he is rebuilding ALPS-pots to include a loudness-tap, which can be used for all Tandberg receivers, I hoped there may be a direct replacement for the original Tandberg pot. Meanwhile, I have found and bought a replacement pot, which fits electrically (ALSP RH2702 50k AX2 for about 7USD from China). This pot has 2 parallel channels each 22 discrete positions with quasi exponential behaviour, meaning change for low volume is small, while increasing when turning to louder and a tap at about 5,6kOhm. I did not yet have the time to assemble this pot as replacement of the original pot. Will report the result as soon as available. Nevertheless, I am still interested in a direct replacement volume pot for the Tandberg TR2075Mkii as a fall back solution.
Peter
Hi Peter,
Do you have any results on this problem? The volume pot on my 2055 is imbalanced by a couple dB mostly in the 9-12 o'clock position. I've been searching for a while for a replacement and the desolder and repair sounds interesting. Thanks.
-Steve
Do you have any results on this problem? The volume pot on my 2055 is imbalanced by a couple dB mostly in the 9-12 o'clock position. I've been searching for a while for a replacement and the desolder and repair sounds interesting. Thanks.
-Steve
Thanks for this. I have been searching for a pot for my 2055 for quite some time. It's down 3dB on the left side in the 9-12 o'clock position. I think I will try the desolder and clean solution.
Hi Steve, I'd say it's a wise and cheap (and rather easy) solution to try at first. Then you'll know if it's satisfying enough. Nothing's perfect in this world, and as I read in some posts, if there's a small % of sound coming out of a speaker when balance button is fully at the opposite side, well... it's still OK for me. I don't need to be in a situation requiring such a particular shape quite often 😉
Thanks for your reply. DeoxIT worked at first but the issue came back. I'm going to pull the pot, measure, disassemble, clean, assemble and remeasure. Also may drop a couple 10k resistors in it's place and measure the output to see if that is in fact the problem. I have used the balance control to make up the difference when needed. Still determined to get it fixed 🙂
Thanks again.
Thanks again.
Hi SteveF137, passing by, did you have the time to clean your pots and listen to the result? hope you're doing well.
Hi perelman. I was about to take apart the pot and realized it was riveted so took a breather. Then coincidentally I found a complete preamp board on eBay. I purchased it and swapped the pot anxious to see a positive result…but nothing changed. I started digging in with signal tracing right back to the input board which showed a mismatch of L/R when leaving the board. I was making progress but due to the tight vertical integration of the board caused a short and blew the 6V/3W festoon bulb/fuse. Now waiting for a replacement and restoring some Dual turntables to pass the time.
-Steve
-Steve