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by frafel
Sat May 19, 2018 9:05 pm
Forum: DSO138
Topic: DSO138 troubleshooting - No AV- (no trace)
Replies: 97
Views: 278179

Re: DSO138 troubleshooting - No AV- (no trace)

Hi. This is my situation: I powered DS0138 (without still connecting the screen) with 9.3 volts and I see the LED flashing slowly only twice; then I find the following tensions: V1: +0.87 volts V2: +3.38 volts AV-: -1.0 volts (and sometimes -0.2 volts) AV+: +4.9 volts After reading the post 1094 I c...