Hp Proliant DL180 G6 Fan Connector Short, Dead fuse, Need replacement

[D7Bird]

hello,

I have a server board of an HP Proliant DL180 G6 and I connected the fan connector to 8 pin kolink. I got a little spark and after that one fan is not spinning. Because of that I cannot boot the server. 

Now I ll need to replace the broken fuse which is F4 (20 written on it) or L77 (R65 written on it). Does anybody know which parts are used there?

(The spark could be because of moisture inside so I think no defect part. Please correct me if I am dead wrong)

[Paul_Tikkanen]

Hi:

HP split into two companies back in 2014.

HP supports PC's, printers, tablets and calculators.

HP Enterprise (HPE) supports servers, switches, routers and enterprise storage devices.

You may want to post your question on the HPE community support forum -- Proliant Servers section:

ProLiant Servers – ML, DL, SL Forum | HPE Blogs, Discussions and Forums Community

[DGroves]

sorry to say but putting the wrong power and/or voltage to a circuit almost always results in destroyed electronics

and no the spark WAS NOT DUE TO MOISTURE it was due to the available AMPERAGE that was introduced

L77  (R65) is not a fuse but a resistor The 3 digit SMD resistor code R65 stands for 0.65 Ω, in words: zero point six five Ohms resistance.

F4 might be a 20 amp fuse but at which voltage? you can't just replace a fuse without knowing this

there is also a high probability that other parts have been damaged due to your improper connection of power lines

bottom line, learn from your mistakes this one will most likely result in you having to replace the motherboard if you are unable to find a local shop to inspect you existing board

[D7Bird]

Thanks for your answer. Maybe I did not report properly. I did connect the original 8 pin connector of the stock Server, which delivers 12 V. In the end only one pin where 12v should be is not working. So in my eyes I did connect power properly (Maybe there is something I did wrong, I do not know)

So it has a huge probability the fuse broke cause of a short. 
But theoreticallly when I change the fuse and take a low voltage <1v it should be visible with a thermal camera where the short is, right? Is there any chance to do this or do I completely destroy other parts? 
Other possibilities would be a pcb- x ray but it would not be cost efficient in view of a new system board. Or testing with a Multimeter, but I don't think I would be able to find the error.

At the fan pin which is not working, there should be a voltage of 12 V. The 8 pin connector gets me 4x 12V and 4x GND. We have 4x Fan connection for Non redundant. So I suppose, each connection of 12V gives me a fan pin with 12V. Of course I could test it by only connecting a few Voltage sources, but this is a lttle bit I risk i think. 

So the fuse would be a Input Voltag of 12V and 20amp