Author Topic: Electronic Load BK 8540 Fried due to wrong polarity  (Read 638 times)

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Offline AndrewJCSTopic starter

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Electronic Load BK 8540 Fried due to wrong polarity
« on: July 14, 2023, 09:47:55 am »
Hello, I have accidentally fried a resistor on my my BK Precision 8540.

I believe the resistor is from a snubber circuit. It's R2 (attached picture) and it's measuring around 2.2ohms in its fried state, but I believe it should be more like 100-200ohms.

I don't suppose anyone here has this particular load and could take it apart to verify? It would be much appreciated  :popcorn:


Thanks!
 

Offline bastl_r

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Re: Electronic Load BK 8540 Fried due to wrong polarity
« Reply #1 on: July 17, 2023, 09:36:38 pm »
But this could also be a fuse resistor!
And then the resistance value would be in the expected order of magnitude.

regards
 

Online coppercone2

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Re: Electronic Load BK 8540 Fried due to wrong polarity
« Reply #2 on: July 17, 2023, 10:15:48 pm »
well the first value is brown it looks like, that is a 1.

I bet a 110 ohm resistor would work. Wanna bet its generic? Something between 100 and 140.

« Last Edit: July 17, 2023, 10:21:08 pm by coppercone2 »
 

Offline bostonman

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Re: Electronic Load BK 8540 Fried due to wrong polarity
« Reply #3 on: Today at 01:52:20 am »
Did you solve this?

My unit is currently disassembled (and broken), so I can take a photo if you'd like.
 


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