I’ve had my Longmill MK2 with the original longboard controller for 2 years and it has worked flawlessly. However this morning when I turned it on, the controller on light would not illuminate and of course the MK2 did not respond to G-sender. The power supply output is 22 volts. Any suggestions short of replacing the controller?
Hi Tim,
Do you measure the voltage with the longboard connected/turned on? If so, what is the Voltage without the lb connectod/turned off?
@timjet Some of the early controllers had an intermittent power switch issue. The work around was to put a jumper bridging the terminals of the back of the switch. Then you can use a power bar or switched outlet to power the long board off and on. Take a look at this thread. There are others, too.
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I measured the voltage at the output of the power adapter.
That’s too bad. Having 22V at the input would have solved the problem instantly.
The question was, did you measure the output voltage with the controller connected and switched on or was it disconnected/powered off?
Also, I think the tread Wiki linked to might be helpful.
I must have a different longboard than the one in the picture of the thread that you forwarded me to. I don’t see any inputs that would allow a jumper wire. And if you tell me exactly where to measure voltage I can do that.
@timjet I’m attaching a clip from your pic, with a red line around what I believe to be the back of the switch. It’s hard to see in your pic, since it’s black on black, but you can easily tell since the other side of the board will be the switch.
I’m thinking that your board is a later version than mine was, and that your switch is the new and improved version. You could confirm that with Sienci.
As to testing, you would be better off talking to Sienci about that, too. If it were me, i would test for continuity between the switch terminals with the switch off and on. Clearly, there should be no continuity between them with the switch off and there should be with the switch on. I would think that you could test voltage from the terminals to ground, too, but don’t take my word for it.
Thanks for your help, I feel really stupid. The Opps switch was engaged and I didn’t realize it. All is normal. Thanks again. When you and others described switched on or off I didn’t realize you were talking about the Opps switch.
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@timjet I was not talking about the Oops switch. The link was not to it, either. The link and I were both referring to the power switch on the long board case.
In any event, you found the issue. That’s all the matters. I’ll close the topic.