Driver Testing Error [resolved]

blackharp · 1908

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Offline blackharp

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on: May 06, 2023, 06:43:04 AM
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?
« Last Edit: May 06, 2023, 11:57:13 AM by Paul Birkeland »



Offline blackharp

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Reply #1 on: May 06, 2023, 07:41:03 AM
Photo



Offline Lowercase

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Reply #2 on: May 06, 2023, 08:25:50 AM
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.
« Last Edit: May 06, 2023, 08:42:54 AM by Lowercase »



Offline blackharp

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Reply #3 on: May 06, 2023, 09:48:17 AM
Thank you!! That worked.