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Old January 10th, 2018, 02:15 AM   #1
yfcarer
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Lightbulb 1769-OB32 problem

Hi Gents:

I met a problem with one of my 1769-OB32 module. Some of the channels suddenly malfunction -- The light indications for the channel are showing right status for ON/OFF, but the output voltage is wrong. When I force channel off, I can get 24VDC from the terminails, while when I force it on, I can measure 18VDC. Meanwhile, most of other channels are working right, that no voltage when off and 24VDC when it is on.

Any thoughts? Thank you.
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Old January 10th, 2018, 04:31 AM   #2
janner_10
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Sounds like that output transistor has failed, you can either move the output to a spare that works or replace the card.
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