Brown Electronic Laboratory amplifer 1001 MV

pictures speak a thousand words... maybe several thousand

If you have the ability I would just replace the jacks 

Interesting suggestion.  I don;t have the tools, but perhaps can find a shop to do that in my area.  

Thanks

You are right that it's a great solid state amp. If it's a MK V then you are extremely lucky.

I think @oddiofyl is on to something. Find a good tech to change the jacks and verify the unit is otherwise hunky-dory. 

There are some schematics on D.I.Y. forum that would be useful for most techs.

The BEL is not a familiar design to most.

I would want the whole amp rightfully looked over. It's just too strange with those jacks.