Search found 1 match
- Fri Jan 01, 2016 11:10 am
- Forum: DSO138
- Topic: DSO138 troubleshooting - No AV- (no trace)
- Replies: 97
- Views: 280738
Re: DSO138 troubleshooting - No AV- (no trace)
Hi! I just want to tell you about the problems I had and the solutions I applied. At first the scope was showing a trace always on top of the screen, regardless of the coupling (AC/DC). Moreover, the analog negative voltage (A-) was not -5V but rather around positive 0.68V. I carefully checked all t...