Hi,WereCatf wrote:Could I ask for help getting my scope to work? The digital side of things is okay; the MCU boots up, the buttons work, the display draws the picture just as it should, and I updated the firmware via ST-Link to the latest version without an issue, but the analog side isn't working. I already tried even replacing Q2, but that didn't have any effect whatsoever.
The board is powered from a 9V battery (actual voltage of the battery is at 8.1V atm)
Here are the most important values I am getting via multimeter:
V+ : 7V
Step 1: 0.826V
Step 2: -1.445V
Q2 collector: 5.39V
Q1 base: 6.98V
Step 4: -- this is where things seem to go wrong
D1-: 1.277V (and rising slowly?!)
Step 5: 0.598V
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Have you found an answer?