2013 Digital Side Car DOA - Warranty ?

[EricVanWyk]

Originally Posted by de_

Its hard to believe ALL the regulators with LEDs are not working. Does anyone know if the board has reverse polarity protection ?

It does. The only components that are common to all three indicator lights are the power connector and the reverse polarity FET.

You should be able to smell the problem if the FET is the root cause. This part can be replaced by someone with moderate soldering experience and a nice hot iron.

I'd be surprised if it is the power connector - you would be able to see damage there.

There could be a short across the VBATT rail, but you would hear the PD breakers clicking.

[de_]

Thanks for pointing that out. Sorry I should have seen that.

Might as well ask, can you think of anything else a student could do wrong to completely knock out the DS on first power up ?

Sure looks like it would be the fet. I connected the DS to a lab powersupply and the DS was drawing no current so no signs of shorts.

I just hope I don't have to drive for 2 hours or pay $20 brokerage + shipping fees to get another fet.

The last time I sent back a $15 sensor to be repaired for free, I got a $70 brokerage fee