The E-14 shifting unit stopped working on my Homage a number of months ago now, just a couple of months out of warranty, which is a nuisance because the bike shop wanted nothing to do with me, and the Rohloff distributor would only look at the unit if I paid money.
It did not fail when I was riding - it failed some time between being connected to the Bosch DC-DC travel charger (that I plug in to a solar battery), and when I next went to use the bike. Turning it on when I went to use it, and the gear shifting no longer functioned.
Recently I decided to open up the E-14 shifting unit myself. It was plain as day that two MOSFETs on the circuit board had overheated and failed. Thankfully they're still available to order (although are now a discontinued product), so I bought a few, and today I've replaced them. I connected the E-14 shifting unit back on to the bike, but without the shift cog so that it was isolated from the internal gears. When the bike is turned on, the Nyon display shows ERROR 595. When left for a moment longer, the E-14 motor begins to rotate and does not stop until the bike is manually turned off.
I am *assuming* that the bike had the same error when it was charging, and that because the shifting motor was connected to the internal gears, once it started spinning and reached the end of the gear range, it was no longer able to turn and burnt out the MOSFETs.
Unfortunately this means I'm still, all these months later, unable to ride the bike.
I did contact Bosch regarding compatibility with the travel charger, and they've since said that it's *possibly* no longer compatible due to software updates. It still charges, but it possibly damages hardware?
It did not fail when I was riding - it failed some time between being connected to the Bosch DC-DC travel charger (that I plug in to a solar battery), and when I next went to use the bike. Turning it on when I went to use it, and the gear shifting no longer functioned.
Recently I decided to open up the E-14 shifting unit myself. It was plain as day that two MOSFETs on the circuit board had overheated and failed. Thankfully they're still available to order (although are now a discontinued product), so I bought a few, and today I've replaced them. I connected the E-14 shifting unit back on to the bike, but without the shift cog so that it was isolated from the internal gears. When the bike is turned on, the Nyon display shows ERROR 595. When left for a moment longer, the E-14 motor begins to rotate and does not stop until the bike is manually turned off.
I am *assuming* that the bike had the same error when it was charging, and that because the shifting motor was connected to the internal gears, once it started spinning and reached the end of the gear range, it was no longer able to turn and burnt out the MOSFETs.
Unfortunately this means I'm still, all these months later, unable to ride the bike.
I did contact Bosch regarding compatibility with the travel charger, and they've since said that it's *possibly* no longer compatible due to software updates. It still charges, but it possibly damages hardware?
