Search found 3 matches
- Fri Apr 13, 2018 7:10 pm
- Forum: DSO138
- Topic: DSO138 troubleshooting - AV+ is negative (no trace)
- Replies: 4
- Views: 5957
Re: DSO138 troubleshooting - AV+ is negative (no trace)
All better now. Thanks for the help.
- Thu Apr 12, 2018 9:45 pm
- Forum: DSO138
- Topic: DSO138 troubleshooting - AV+ is negative (no trace)
- Replies: 4
- Views: 5957
Re: DSO138 troubleshooting - AV+ is negative (no trace)
The inductor was bad and is now replaced. AV+ is now around 5v but still no trace.
- Wed Apr 11, 2018 12:54 am
- Forum: DSO138
- Topic: DSO138 troubleshooting - AV+ is negative (no trace)
- Replies: 4
- Views: 5957
DSO138 troubleshooting - AV+ is negative (no trace)
The device boots and has the screen come up but no trace appears. I went through the AV- (no trace) guide but didn't see any issues. Using the voltage reference guide I measured AV- at -4.95V, AV+ at -2.1V, V1 at -1.29, V2 at -1.22V and all other voltages were correct (the voltages with a single sta...