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- Wed Mar 07, 2018 1:09 am
- Forum: DSO138
- Topic: DSO138 troubleshooting - No AV- (no trace)
- Replies: 97
- Views: 276596
Re: DSO138 troubleshooting - No AV- (no trace)
Hi, all voltages are correct, except AV- = -3.85v, V- = 4.7v. Replace L1, L2, C24, D1, Q1, U4. It still does not work, no LCD signal is shown