White Screen Issues
Posted: Tue Mar 06, 2018 6:06 pm
I bought a DSO138 and soldered all the parts to the board and now I am getting a white screen. I have listed below the voltage at each test point. Can anyone help me find the problem?
Input 9.38 AV- =-5.002 AV+ = 4.953
+3.3v = 3.262 +5v = 4.984 D1 = 0.148
R38(L)= 6.385 R38(R)= 8.370 R39 =-1.406
OSC = 1.927 TP22 = 3.263 R40 = 0.816
D2 = 9.380 V+ = 8.600 V- =-8.290
V1 = 0.053 V2 = 1.616 V3 =-2.857
I tried holding the soldering tip on each pin at J1 as well but that didn't help.
Input 9.38 AV- =-5.002 AV+ = 4.953
+3.3v = 3.262 +5v = 4.984 D1 = 0.148
R38(L)= 6.385 R38(R)= 8.370 R39 =-1.406
OSC = 1.927 TP22 = 3.263 R40 = 0.816
D2 = 9.380 V+ = 8.600 V- =-8.290
V1 = 0.053 V2 = 1.616 V3 =-2.857
I tried holding the soldering tip on each pin at J1 as well but that didn't help.