Bruce Hirst
1 µW
I currently have a BBSHD 1000w motor kit on my bicycle and the display is a DCP-18. One day it simply would not turn on. Long story short, the controller malfunctioned and killed the display along with it. I had to replace both in order for it to work.
Now for the long story which might be similar to yours. Hopefully this may help others figure out how to solve their own problem.
1) I tried to turn on the bike using the display to no avail. I also tried turning the battery on and off a few times but that didn't help either.
2) Next I slid the battery off of its mount and put a multimeter on it to see if it had power. Yes, the battery was putting out power so the batttery was fine.
3) I figured that either the display had gone bad or the controller manfunctioned but I needed to figure out which. I've had a controller burn out on me before so I decided to start there. I ordered a replacement controller and put it on the motor. I tried turning on the bike but the display still would not come on.
4) At that point I thought that maybe just the display was bad. I ordered a replacement display and put it on the bike. The display turned on! I assumed that it was just the display the whole time and I wasted my money on the new controller.
5) So I put my original controller back on the bicycle (maybe I could resell the new one or save it for the next break down). The display turned on and worked but something was off. The display said the battery was almost empty and only had about 2% charge left.
6) So I charged my battery all the way up (took about 6 hours) and put it back on the bike. However, the display said the battery was only giving it about 48 volts. Since this was a 52 volt battery, I put the multimeter back on the battery and it said the battery was putting out 58 volts. So either the display was not reading the battery correctly, or the original controller was not. I'm not an expert but I had a feeling that the display's only job is to show what the controller is telling it.
7) So I put the brand new controller on the bike (keeping the new display) and now the display shows the correct voltage (the same voltage that I got from the multimeter) about 58 volts.
8)My guess is that the old controller malfunctioned and ruined the display so it would not turn on the bike. I guess I'm lucky that putting the old controller with the new display didn't accidentally harm the new display. At least my problem is solved and I can go back to riding my bike.
It's a shame there's not some kind of diagnostic tool that you can plug into the display port which could tell you if the controller has malfuctioned, or even a tool you could plug into the display to check it it's working properly. Something like that could have saved me a lot of trouble. Anyway, thanks for listening.
Now for the long story which might be similar to yours. Hopefully this may help others figure out how to solve their own problem.
1) I tried to turn on the bike using the display to no avail. I also tried turning the battery on and off a few times but that didn't help either.
2) Next I slid the battery off of its mount and put a multimeter on it to see if it had power. Yes, the battery was putting out power so the batttery was fine.
3) I figured that either the display had gone bad or the controller manfunctioned but I needed to figure out which. I've had a controller burn out on me before so I decided to start there. I ordered a replacement controller and put it on the motor. I tried turning on the bike but the display still would not come on.
4) At that point I thought that maybe just the display was bad. I ordered a replacement display and put it on the bike. The display turned on! I assumed that it was just the display the whole time and I wasted my money on the new controller.
5) So I put my original controller back on the bicycle (maybe I could resell the new one or save it for the next break down). The display turned on and worked but something was off. The display said the battery was almost empty and only had about 2% charge left.
6) So I charged my battery all the way up (took about 6 hours) and put it back on the bike. However, the display said the battery was only giving it about 48 volts. Since this was a 52 volt battery, I put the multimeter back on the battery and it said the battery was putting out 58 volts. So either the display was not reading the battery correctly, or the original controller was not. I'm not an expert but I had a feeling that the display's only job is to show what the controller is telling it.
7) So I put the brand new controller on the bike (keeping the new display) and now the display shows the correct voltage (the same voltage that I got from the multimeter) about 58 volts.
8)My guess is that the old controller malfunctioned and ruined the display so it would not turn on the bike. I guess I'm lucky that putting the old controller with the new display didn't accidentally harm the new display. At least my problem is solved and I can go back to riding my bike.
It's a shame there's not some kind of diagnostic tool that you can plug into the display port which could tell you if the controller has malfuctioned, or even a tool you could plug into the display to check it it's working properly. Something like that could have saved me a lot of trouble. Anyway, thanks for listening.
