Could anyone help me with these old pots?

Status
Not open for further replies.
Jump to Latest
B

b0ri5

Member
Joined 2010
#1
Hi,
I am trying to repair my old Nad 3030 integrated amp. I would change the old pots, but I can not find the right ones.

An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.


Here are all the information that I got

Here's the service manual
Nad_3030 service manual

I really do not know where I can buy new ones. 🙁
Thank you 😉
 
Last edited:
#4
Take care of them

Hi
I think its nearly impossible to buy them nowdays. The bproblem is the 4th wire that I think is used for loudness in your amplifier. At least its like that in som HK recievers from the 70s. So try and clean them with deoxit or something like that. There are good thread about cleaning pots🙂
 
#5
indianajo said:
The outside dimensions of the screw threads, the distance between legs, and the distance between the back of the mount flange and the leg at the circuit board level would be useful.
Click to expand...

These are some photos(tried my best 🙂).


DF96 said:
Do they need changing? Have you tried switch cleaner?
Click to expand...

I have already tried to open them but I really don't know how.
They have also a wrong impedance (due to age, I think). For example volume pot now is 40k instead of 50k
 
#6
No need to open them, just squirt it in through a hole. If you want to open them then just bend back the metal tags but be careful because you may not be able to get them back together neatly.

It is unusual for a pot to reduce in value as they are basically carbon resistors. Maybe just a tolerance issue - they might be 20%? 40K will work fine instead of 50K.
 
Status
Not open for further replies.
Top Bottom