Where did I see this DMM repair? Random numbers due to input circuit problem

[mcovington]

I think this was in an EEVBLOG video, and if not, someone else's video... to the best of my recollection, it was a DMM that displayed random numbers due to a fairly simple fault in its input circuit, I don't remember what.  I have a similarly afflicted DMM.  Does this ring any bells for anyone?  (Mine is a Beckman DM25 and I have the schematic but have not started serious troubleshooting.)