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by Edison
Thu Feb 18, 2016 5:26 am
Forum: DSO138
Topic: DSO138 troubleshooting - No AV- (no trace)
Replies: 97
Views: 275798

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

Hi, i've this case:
V1=0v V2= 3v AV-=-4 V+=8,45
1) R40 0,81
2) Q2b -1,4
3) Vb1 8,25 Vc2 6,3
4) D1 have right 0,19 left -4,9
5) V- (TP25) -4,9
6) AV- (TP26) -4
You can help me?
L2 (1mH/1A) have up 0 and down 0,15 !!!!
C24- = -4,9
Thank's