Awesome, thanks for the info! I ordered a cheap used gen1 charger just to make sure that I can swap in a charger. Another thought I had: if the Master is broken and the Slave is good, then just swapping the two will again allow me to charge at up to 40A, right because only for over-40 Amps charging will the slave charger be activated. You can see that when connecting to a 48A charger, the current first runs up to 24A to dial in the Master charger, then it sits at 24 for a while, then it ramps up the Slave charger until the pair is drawing 48A combined. Anyway, will be digging into that soo to get this car back on the road. Then I will come to you for Supercharging re-enabling. Do you care if it still has the original computers? I did not want to invest $1500 or something like that just to upgrade to later version computers.while the car stays the same... Regards, Cor.
On Mon, Jul 15, 2024 at 11:36 PM (-Phil-) <p...@ingineerix.com> wrote: > > The Gen1 chargers are not known to be the most reliable. Sounds like a > problem in the PFC stage. They are not very serviceable even if you can do > board-level repair due to their mechanical design. I suggest just ordering a > used one for a couple hundred $. > > If you wanted to save buying one, you could convert the existing slave to a > master, and move it to the passenger side, and remove the master (so you'd be > down to 40A max charging), but this requires some hassle including altering > the config so the car doesn't look for the 2nd slave charger. > > It's also possible to upgrade to the Gen2 charger, but it would require also > replacing the HV junction box that contains the DCFC contactors and some > harnessing. > > On Mon, Jul 15, 2024 at 11:26 PM Cor van de Water via EV <ev@lists.evdl.org> > wrote: >> >> Hoping to find someone that has experience with the early Tesla model S and >> X 40A onboard charger. >> My S85 actually has 2, having the ability to take up to 80A, up to 20kW >> level 2 charging speed. >> But, recently it refuses to charge: everything seems ok when plugging in, >> but after half a minute the car ramps the current up, as soon as it even >> steps to 1 Amp, it fails with warning: "charging slowed - poor grid power >> quality possible. Try different charging location. >> >> Well, no problem with the charging location, I have read that this is >> likely a problem in the charger or the circuit feeding the AC to the >> charger. >> Before I rip my rear seat out to get to the dual chargers, I hope someone >> has seen this behavior before and can give me a heads up what to expect. >> Preferably I have materials for repair at hand and do not need to leave the >> car ripped apart for too long, it is in a public location. >> I do have the service manual, but that just tells how to remove the onboard >> chargers, not how to repair them, though I am comfortable troubleshooting >> and soldering... >> Cor. >> -------------- next part -------------- >> An HTML attachment was scrubbed... >> URL: >> <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20240715/12915e2c/attachment.htm> >> _______________________________________________ >> Address messages to ev@lists.evdl.org >> No other addresses in TO and CC fields >> HELP: http://www.evdl.org/help/ >> _______________________________________________ Address messages to ev@lists.evdl.org No other addresses in TO and CC fields HELP: http://www.evdl.org/help/
