WTB: BK1590/Trio2100 Attenuator/preampboard

[watchmaker]

The BK I purchased as my forever analog developed a glitch in the Channel 1 preamp. I am all but certain the IC1 ckt is unstable.

This scope is a rebranded TRIO/Kenwood 2100.

I need to buy an attenuator board (or entire attenuator/preamp assembly) with at least one good channel.

Do you have anything in the bone yard?

THANKS!!