reversed the 24v input

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4 years 5 months ago #243822 by roscogamer
reversed the 24v input was created by roscogamer
Hello,
I have been tinkering with a mesa 7i76e and when connecting the main 24v input I accidentally reversed the plus and min, and now it won't turn on.
Did I completely destroy it, or is it just a broken diode?
 

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4 years 5 months ago #243827 by tommylight
Replied by tommylight on topic reversed the 24v input
Moved to "driver boards".

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4 years 5 months ago #243868 by PCW
Replied by PCW on topic reversed the 24v input
You may have simply shorted out the reverse polarity protection diode
depends on the current capacity of the supply

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4 years 5 months ago #243887 by roscogamer
Replied by roscogamer on topic reversed the 24v input
OK, that sound promising.
Can I just remove the shorted diode and replace it?
And what diode is the dead one, I did notice a warm spot on the board afterwards.

Also, not sure now much it matters, but it was a 5 amp PSU

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