New (to me) HP3455a problem

[Jeff L]

Hi, Just received my HP 3455a 2 days ago. Was working fine, now won't switch to "ohms" ,also won't do the
"test" of all the LEDs like it did when I first got it. Actually, quite a few of the functions don't work now. I'm
no Tesla, but I do know my way around a voltmeter and a 'scope.
  Any idea where to start? I have downloaded the owners and maintenance manual.
  Thanks, Jeff

[Testtech]

Stuck button?

[pelule]

Another potential cause - during the shipemt the plug-in boards have lost the connection.
Solution: remove top cover & internal analog top cover and re-plug the boards.
/PeLuLe

[Jeff L]

Re-seated the small top board and sprayed with De-Oxit  ---Problem Solved!!!