ROB1N

Member

• Sep 22, 2013

• #1

Well here goes I have an nnn ecu of a customers disco and was looking to have a go at repairing it and fit it to my defender so I can tune it.
from what I remember their is outputs from the ecu does anybody know what fails inside the ecu I have had a visual inspection nothing that I can see look damaged before I get the meter out some info would be appreciated cheers rob

 

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ferretboy

Active Member

• Sep 28, 2013

• #2

You could try checking the power transistors ! Black with three legs and a metal heat sink part embedded into the top!! Thes can develop a dry joint !!!

 

ROB1N

Member

• Oct 1, 2013

• #3

Hi are all the transistors power transistors do you know which ones commonly fail cheers rob

 

sierrafery

Well-Known Member

• Oct 1, 2013

• #4

those big condensers used to fail too

 

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ferretboy

Active Member

• Oct 1, 2013

• #5

They are the larger black ones ! Around 10mm square and usualy screwed to a heatsink !!