That would be typical if the chassis is ungrounded. Capacitance between the primary and shield (which
is connected to the chassis) in the mains transformer will cause this. First thing to do is connect
the ground in the mains plug - the previous user did a dangerous thing by disconnecting the ground.
There may be other problems to solve, of course - but make the scope safe first.
Craig
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-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of f4gny@...
Sent: 15 August 2018 06:02
To: [email protected]
Subject: [TekScopes] 453 trouble
Hello Folks,
Ive trouble on my 453, I discover that AC voltage is running on chassis +/- 75V .........
I opened the main plug and the ground pin was unconnected.
Does anyone experienced the same trouble ? is it normal when ungrounded or internal PSU show a
defective componement ? Thank for your help.
Regards
Alain
