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Tech => Tech Help => Topic started by: phildaniels on July 06, 2016, 10:58:15 PM

Title: DC-DC regulator
Post by: phildaniels on July 06, 2016, 10:58:15 PM

Has anyone ever had a failed DC-DC regulator?  I have a 2015 FX 5.7 and all 12V accessories are dead.  (lights, horn, ABS, backlight to dash) (The 12V to the dash screen and motherboard are fine).

I checked high voltage DC-DC fuse (in cable harness) and it is fine.  All 12V fuses are fine. I am convinced this is not a loose wire.  Probably not a ground issue given that I have 12V on the other line out of the DC-DC for motherboard and dash screen.

Could the DC-DC has 2 12V circuits and internal fusing??  Anyone else had DC-DC problems?

(Originally, this was an intermittent no-12VDC problem based on start-up temperature outside, and got worse and worse until now there is 12V at all on the accessories. So it wasa slow failure...like how a DC-DC can fail.)

Anyone able to help me? 

Thanks,
Phil Daniels
603-321-9245

Title: Re: DC-DC regulator
Post by: BrianTRice@gmail.com on July 07, 2016, 11:16:51 AM

Yes, it's been reported before. Find a dealer; the replacement should happen under warranty.

Product page: http://www.sevcon.com/dcdc-converters/dcdc-converters.aspx (http://www.sevcon.com/dcdc-converters/dcdc-converters.aspx)