From: tech@parts-link.net   
      
   Picked up this as a donation yrs ago, mostly in good shape only its got Y   
   axis drift, which seems to settle down on warmup after a long time.   
      
   I posted to EEV blog in 2023, but no responses.   
   https://www.eevblog.com/forum/testgear/leader-lbo-518-scope-y-ax   
   s-drift/msg5127711/#msg5127711   
      
   Someone on another forum said electrolytics on the input boards for each   
   channel could be   
   high ESR, so I guess thats the next thing to check?   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)