nlspace
Posts: 321
Joined: Mon Jun 05, 2017 10:21 pm
Delivery Date: 06 Jun 2017

Re: Onboard charger capacitors failed

Sun Nov 08, 2020 11:01 am

Hey guys, how about moving your off topic to a separate thread and delete the previous 2 posts--let's not degrade the signal to noise ratio on troubleshooting and repairs even more.

Who1981
Posts: 6
Joined: Sun Feb 07, 2021 12:36 pm
Delivery Date: 05 Feb 2021
Leaf Number: 021208

Re: Onboard charger capacitors failed

Thu Feb 11, 2021 1:05 am

This thread has been quite helpful, thanks!
I just purchased a 2012 Leaf, CHEAP, with a bad charger. Looks like it has at least 1 fried suppression cap, that coated the entire inside of the charger with magic smoke residue. I'll dig in farther and post more pictures soon.

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On the top board, D547 looks a little toasted, but tests okay.

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Oh, and the OEM charger appears to have been upgraded to 240 volt capability. Any idea if this is reliable?

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nlspace
Posts: 321
Joined: Mon Jun 05, 2017 10:21 pm
Delivery Date: 06 Jun 2017

Re: Onboard charger capacitors failed

Thu Feb 11, 2021 7:16 am

One lead of the blue capacitor is easy to access from the bottom side, the other lead is underneath the waffleplate about an inch. If you have a long skinny tip on your solder iron then you could reach in to remove/replace the cap.

wxmatt
Posts: 20
Joined: Sun Sep 27, 2020 3:34 pm
Delivery Date: 14 Nov 2014
Leaf Number: 023861

Re: Onboard charger capacitors failed

Thu Feb 11, 2021 9:57 am

It has been a couple of months so I guess I should update:

To this point, the on board charger with the replaced capacitors and the swapped cooling components is continuing to perform as expected without errors. The car charges, and let’s be honest, that’s enough!

In order to guarantee that my EVSE didn’t cause the components to fail (assuming that could’ve been the original culprit), I replaced my EVSE with a second hand, excellent condition Aerovironment. So far, so good.

A huuuge thanks to everyone (especially @nlspace) for all of your help! It took a lot of time, and effort, but it brought my LEAF back to life.
2012 LEAF (White) - Purchased in 11/14
2010 Rogue (Black)
1987 BMW 325i (Red)

91040
Posts: 1051
Joined: Fri Mar 11, 2011 10:36 pm
Delivery Date: 06 May 2011
Location: Los Angeles, CA

Re: Onboard charger capacitors failed

Thu Feb 11, 2021 9:48 pm

Your EVSE looks like it was modified by EVSE Upgrade. They did quality work but I would test it given your onboard charger was blown.
Who1981 wrote:
Thu Feb 11, 2021 1:05 am

Oh, and the OEM charger appears to have been upgraded to 240 volt capability. Any idea if this is reliable?

Image
1st Capacity Bar loss 30k mi 16mo
2nd- 49k mi 25.5mo 51.5Ah
3rd- 73k mi 36.5mo 46.9Ah
4th- 86.5k mi 43mo 42.6Ah
5th- 101k mi 50.5mo 38.4Ah, end 36.1Ah
New Battery 9/28/15 104k mi 66.1Ah
1st- 160.5k mi 34mo 54Ah
2nd- 184.4k mi 53mo 49Ah

Who1981
Posts: 6
Joined: Sun Feb 07, 2021 12:36 pm
Delivery Date: 05 Feb 2021
Leaf Number: 021208

Re: Onboard charger capacitors failed

Fri Feb 12, 2021 1:53 pm

NLSPACE thanks, I have just such a soldering iron. Wish me luck.

91040 can you recommend a method of testing an EVSE?

91040
Posts: 1051
Joined: Fri Mar 11, 2011 10:36 pm
Delivery Date: 06 May 2011
Location: Los Angeles, CA

Re: Onboard charger capacitors failed

Sat Feb 13, 2021 10:26 pm

Sorry but I am not qualified to offer any technical advice.

The J1772 standard is published. OpenEvse.com had a page which showed and discussed it. They also had a schematic for a small board to check whether the EVSE conformed to the standard.

There are also threads on this forum that discuss EVSEs and their problems. Hopefully, a knowledgeable person will soon weigh in. Good luck!

Link to J1772 basics- https://openev.freshdesk.com/support/so ... -sae-j1772

Testing an openevse may provide some insights-
https://openevse.dozuki.com/Guide/Testi ... 12?lang=en
1st Capacity Bar loss 30k mi 16mo
2nd- 49k mi 25.5mo 51.5Ah
3rd- 73k mi 36.5mo 46.9Ah
4th- 86.5k mi 43mo 42.6Ah
5th- 101k mi 50.5mo 38.4Ah, end 36.1Ah
New Battery 9/28/15 104k mi 66.1Ah
1st- 160.5k mi 34mo 54Ah
2nd- 184.4k mi 53mo 49Ah

Who1981
Posts: 6
Joined: Sun Feb 07, 2021 12:36 pm
Delivery Date: 05 Feb 2021
Leaf Number: 021208

Re: Onboard charger capacitors failed

Wed Feb 17, 2021 11:19 am

Thanks, I'll look into testing the EVSE.

I was delayed by weather, but finally got the bottom board removed, and found another toasted capacitor, a blown fuse, and an exploded diode. I've ordered a used onboard charger off eBay for $450...🤞🏼🤞🏼🤞🏼

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nlspace
Posts: 321
Joined: Mon Jun 05, 2017 10:21 pm
Delivery Date: 06 Jun 2017

Re: Onboard charger capacitors failed

Wed Feb 17, 2021 5:15 pm

Those are all on the AC input side of the OBC, so that is actually a good thing in that replacement can be made on those parts to repair the unit.

Was the OBC already defective when you got the car? This didn't happen by you plugging in the EVVSE to chargge the car?

What was the reference designator of the fuse--like F101, etc?

Who1981
Posts: 6
Joined: Sun Feb 07, 2021 12:36 pm
Delivery Date: 05 Feb 2021
Leaf Number: 021208

Re: Onboard charger capacitors failed

Thu Feb 18, 2021 7:18 pm

I bought the car cheap with the charger already not working. The previous owner just said it stopped charging in the middle of the night. It was on this evse that has been modified.

F101 is blown.

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The other capacitor I found might be even trickier to remove with the waffle plate in place. If I do try to repair this board, I'll be getting some good desoldering practice.

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