Search found 1 match
- Fri Sep 30, 2016 2:57 pm
- Forum: DSO138
- Topic: DSO138 troubleshooting - No AV- (no trace)
- Replies: 97
- Views: 277509
Re: DSO138 troubleshooting - No AV- (no trace)
Hi I have AV- is around zero I measured the voltages for Q1 & Q2 terminals and found ok except the positive terminal of D1 D1 isolated and tested outside and found OK Can anyone provide us with a waveform signal in the AV- circuit ? I have another oscilloscope , found the i have around 17 kHz si...