Search found 4 matches
- Fri Mar 09, 2018 5:23 pm
- Forum: DSO138
- Topic: White Screen Issues
- Replies: 4
- Views: 5532
Re: White Screen Issues
I heated and reflowed the solder on each point at J1 and J3 on LCD board as well as J1 and J8 on Main board then did continuity tests on each pin of the both 40 pin headers and still can't find the problem.
- Wed Mar 07, 2018 6:39 pm
- Forum: DSO138
- Topic: White Screen Issues
- Replies: 4
- Views: 5532
Re: White Screen Issues
Yes the LED blinked twice at start up and when I tried test mode the LED blinks slowly. I will try re-soldering and update later.
- Tue Mar 06, 2018 6:18 pm
- Forum: DSO138
- Topic: White Screen Issues
- Replies: 4
- Views: 5532
Re: White Screen Issues
I forgot to upload pics of the board. Thanks in advance
- Tue Mar 06, 2018 6:06 pm
- Forum: DSO138
- Topic: White Screen Issues
- Replies: 4
- Views: 5532
White Screen Issues
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 ...