Down to one working probe( have three ) has any one had any luck fixing these?I an getting the dc reading but no waveform.Thanks. Ron Miller D.T.V. Texas Help make your TechAssist online repair tips database better! Submit your fixes here: http://www.circuitwork.com/techassist/tip/#tips To unsubscribe write to: techassist-request@xxxxxxxxxxxxx with unsubscribe in the subject line.