keepitrunning
Member
- Joined
- Mar 7, 2022
- Messages
- 11
This is a follow up to my previous post where I thought I had fixed my 2012 OBC model 3NA060 (from the sticker)
https://www.mynissanleaf.com/viewtopic.php?t=33140
After a month or so of normal charging it stopped working again. There is still no obvious sign of failure of a component - no leaking, bulging, exploding etc. On the second failure the OBC had burned out the same thermally fused resistor location (which I had replaced with a normal power resistor) shown in my repair in my old thread.
So then I added in an extra high power version of the same resistor and it burned that out immediately.
Since this is the second failure, I'm going for broke before shelling for the new charger. In the process of pulling parts again, I did discover an easier way to remove the back board without removing the OBC from the vehicle was to remove the giant capacitor on the left side first, which then necessitates less bending of the bracket that holds the large diode at the bottom right of the OBC aluminum case.
A different resource had pointed to needing to check the noise suppression capacitors of type LE335 (blue) 3.3microF on the left side and type LE105 (black) 1.0microF near the 3 resistor chain in the AC section.
I probed these capacitors while still attached to the board and they are not shorted, but they also don't climb in resistance like I would expect on my multimeter, in fact the 1.0microF LE105 shows open when I probe it. I don't have a fancier meter available.
I acquired the vacuum solder station I will need in order to remove the waffle plate, and while I've done that to check these capacitors and the relay in the same AC section, I figured I might as well be ready to replace them, or just plan to replace them from the get go.
What other parts should I replace at the same time that also might go bad soon?
I'm having difficulty finding the OKAYA LE355 and OKAYA LE105 from typical US distributors and also struggling to determine what type of equivalent part would work instead. I'm planning to replace the K1AK005W-KW at the same time...naturally it's out of stock at Mouser. That one might be easier to find an equivalent of, but if there's a go to version, please advise.
Has anyone successfully replaced these components with a different brand? Very little turns up in the forum search on the actual replacements used, so maybe they used to be more available and people were using the Okaya?
I'm loving the helpful community here and hoping that my own experiences will one day guide others too.
https://www.mynissanleaf.com/viewtopic.php?t=33140
After a month or so of normal charging it stopped working again. There is still no obvious sign of failure of a component - no leaking, bulging, exploding etc. On the second failure the OBC had burned out the same thermally fused resistor location (which I had replaced with a normal power resistor) shown in my repair in my old thread.
So then I added in an extra high power version of the same resistor and it burned that out immediately.
Since this is the second failure, I'm going for broke before shelling for the new charger. In the process of pulling parts again, I did discover an easier way to remove the back board without removing the OBC from the vehicle was to remove the giant capacitor on the left side first, which then necessitates less bending of the bracket that holds the large diode at the bottom right of the OBC aluminum case.
A different resource had pointed to needing to check the noise suppression capacitors of type LE335 (blue) 3.3microF on the left side and type LE105 (black) 1.0microF near the 3 resistor chain in the AC section.
I probed these capacitors while still attached to the board and they are not shorted, but they also don't climb in resistance like I would expect on my multimeter, in fact the 1.0microF LE105 shows open when I probe it. I don't have a fancier meter available.
I acquired the vacuum solder station I will need in order to remove the waffle plate, and while I've done that to check these capacitors and the relay in the same AC section, I figured I might as well be ready to replace them, or just plan to replace them from the get go.
What other parts should I replace at the same time that also might go bad soon?
I'm having difficulty finding the OKAYA LE355 and OKAYA LE105 from typical US distributors and also struggling to determine what type of equivalent part would work instead. I'm planning to replace the K1AK005W-KW at the same time...naturally it's out of stock at Mouser. That one might be easier to find an equivalent of, but if there's a go to version, please advise.
Has anyone successfully replaced these components with a different brand? Very little turns up in the forum search on the actual replacements used, so maybe they used to be more available and people were using the Okaya?
I'm loving the helpful community here and hoping that my own experiences will one day guide others too.