Armstrong 600 series balance potentiometer

[comment][/comment]Hello Forum!

This is my first post here - wooo!

I come to you with a problem. I have an Armstrong 625 receiver (I also have a 621) working 99% ok. The only problem is the balance. In the neutral point only left plays. As I go toward right left start fading, right nothing. When I am about 80% to the right, right starts playing loud (as it would play if it would be at that sport). I suspect since the unit was store in a damp area, the potentiometer is damaged (it also moves hard to the right than other potentiometers). How can I replace it? I look on the internet but I could not find any potentiometers for this specific units. I suspect is a common one. But I need to identify it.

Can you help me?

Ive attached a picture form internet, but it is similar to my unit (even tho this is 621, the part is the same)

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Thank you!

Hk
 
There are four dual controls + a function switch shown in your picture , one of them is the balance control ---yes ?

Just read off the value on the side of the control most old UK amplifiers/receivers show this like --50K-100K etc .

Forget looking for the exact replacement, I have lost count of the number of non factory original potentiometers that I have fitted to valve radios /old amplifiers , a small saw can cut down a shaft to the correct length as long as its a new one with a good track .

I don't have a schematic to hand yet that shows the balance control.