OpenSprinkler Forums Hardware Questions OpenSprinkler Pi (OSPi) OSPi regulator testing Re: Re: OSPi regulator testing



Got the replacement and unboxed it today mounted it and was doing the test before connecting it to the pie. When I flipped the switch the LED came on for a brief second and went out. I tried checking voltages got .2V from gnd to the 5V on the board and the no load voltage of the transformer is 25.8V when I turned it on last there was a visible arch around D3 and the LED hasn’t come on since. I tried measuring between pin 3 and 1 on the LM2596 and expected to see 25V instead it read 75V. I quickly powered it off and went to the power supply thinking maybe it was messed up. I check the voltage at the adapter and it read 25.8V. I powered it on and it dropped to 25.6V so nothing odd here. Any suggestions on things I can do?