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Old 09-18-2021, 07:51 AM   #28
sam_sam_sam
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Join Date: Jul 2011
City & State: Some times Sunny Jacksonville FL
My Country: USA
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Posts: 3,081
Default Re: Catapillar ECU repair, need N548AB replacement?

Quote:
Originally Posted by eccerr0r View Post
would be evil if caterpillar OEMed dummy parts that just short S-D and just used those as jumpers...
I would have to totally agree with you on this point
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9 PC LCD Monitor
6 LCD Flat Screen TV
30 Desk Top Switching Power Supply
10 Battery Charger Switching Power Supply for Power Tool
6 18v Lithium Battery Power Boards for Tool Battery Packs
1 XBox 360 Switching Power Supply and M Board
25 Servo Drives 220/460 3 Phase
6 De-soldering Station Switching Power Supply 1 Power Supply
1 Dell Mother Board
15 Computer Power Supply
1 HP Printer Supply & Control Board * lighting finished it *


These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10%

1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later )
2 Hem Saw Computer Stack Board

All of these had CAPs POOF
All of the mosfet that are taken out by bad caps
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