8484Re: [solectria_ev] NLG4 problems WAS Re: '97 Force CALB 100 Upgrade
- Nov 2, 2012Incidentally, I finished mounting the NLG5 in the Force this afternoon -- built up a
pretty nice adapter out of aluminum that allows the NLG5 to bolt in where the NLG4 used
to, and allows for easy bolt-free removal of the charger if necessary. Took me a while to
figure out a good way to do this; I thought it was odd that the NLG5 has no mounting
flange, bolt holes, etc. but this gets around it in a fairly simple way.
Photos are at http://groups.yahoo.com/group/solectria_ev/photos/album/2099670287/pic/list
On 11/2/2012 12:27 PM, Tom Hudson wrote:
> Yeah, that's a pretty classic failure mode. You should have seen Mike Rydjord's charger
> he sent me for repair several years back. The arcing from one of the caps (failure at a
> solder joint) had really hosed one of the PCBs. Did a fair amount of radical
> reconstruction on it and got it working again; luckily the problem was localized and it
> hadn't taken out other major components.
> Facing facts, these chargers are getting to be upwards of 17 years old, and they take
> quite a beating thermally. I still have a bunch of them in my shop that I need to get to
> Wolf if he still wants them -- lots of parts in those -- but I just got tired of
> constantly having to mess with mine to keep them working. I wasn't crazy about spending
> the bucks on a couple of NLG5s but they just work without me having to spend many hours
> opening them up and troubleshooting them.
> Getting these higher-capacity battery packs kind of magnifies the problem -- much longer
> charge cycles for the chargers means more wear and tear.
> On 11/2/2012 12:05 PM, geo_homsy2 wrote:
> > Ahhhhh, the "half power" problem. I never heard of it before, but it makes sense, given
> > what happened to my NLG4 last week.
> > My NLG4 has been running at half power ever since I started monitoring it a few weeks
> > ago. I just thought it was doing that for some "good" reason. And, the current was
> > jittery. Again, I thought that's just the way it is.
> > Then, last week, it bit it, big time. Opening up revealed the cap board had zorched on
> > one side.
> > So, my guess is that it was running at half power 'cause one side was marginally smoked
> > for a LOOOOONG while, and it finally bit the dust when it got so bad that the input
> > fuses finally blew?
> > Does this make sense to anyone/everyone? Anyone seen this problem before? Tom? Wolf?
> > //Geo
> Thomas Hudson
> http://portev.org -- Electric Vehicles, Solar Power & More
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