EEVblog Electronics Community Forum
Electronics => Repair => Topic started by: doncia on November 23, 2017, 10:27:27 pm
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Hi, all of you. I've been working with this scope for a long time now, but lately I noticed that channel one was a bit unstable. Consequently the problem evolved into having ranges of 5V and larger not working at all. The scope internal relay is working as I can hear the click and compared to channel 2 it is switching at the right range change, however the display goes to a flat line at the 5V range. Anyone can help please?
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Welcome on the forum :-+
It is probably a problem of bad contacts of the relays.
Here is the diagram of the front end of your oscilloscope.