Driver Testing Error [resolved]

blackharp

New member
On page 65, IA & IO measure correctly, but at 32U I get 136VDC and the potentiometer on the board does not affect the reading. I turn and it remains. On 46U, I was able to adjust the pot to 175VDC. Any ideas?
 
Looks like you are missing the 4.99KΩ 1⁄8W resistor in the R3 position on the A side of the board. Last step on page 56. That should resolve it.

Also noticed some of the joints might need a bit more solder too.
 
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