Odd Dolphin Diagnostic behavior

by Lou markarian
(Santa Rosa, ca, USA)

Hi,
After running, cleaning and dropping the Dolphin Diagnostic back into the pool, it wouldn't start up. I pulled it out and turned it on and could hear the power click on, but nothing. So I picked it up and turned it on it's corded side and the drive started to move. ( drive only, no pump). I thought it was a loose cord so I wiggled it and nothing. I picked it up again turned it upside down, nothing. It will only run when it's turned on the corded side,any other angle and it stops.
Have you ever come across this problem before?

Lou