I've got a board here with a switch, it's got a three pin switch... The AC adapter is low mA and 20 volts. I can't seem to get any voltage past the two DC pins from the AC adapter port that are soldered in the board...
Now the positive pin on the back of this relatively simple board travels to one of the three pins of the switch. My understanding is that when the switch is toggled, it connects the first and second pin (I don't know what the third pin is) and the secnd pin is jumpered to the rest of the board somehow...
...yet whether the switch is toggled or not, I'm only reading 20V when the probe is on the first pin of the switch...
Is the switch defective?
I ask because the board doesn't power up, no voltage even before the the small either tantalum or ceramic capacitor near the two mosfets.
Here is the datasheet of the exact switch:
It's the switch pictured at the very top right corner.
Now the positive pin on the back of this relatively simple board travels to one of the three pins of the switch. My understanding is that when the switch is toggled, it connects the first and second pin (I don't know what the third pin is) and the secnd pin is jumpered to the rest of the board somehow...
...yet whether the switch is toggled or not, I'm only reading 20V when the probe is on the first pin of the switch...
Is the switch defective?
I ask because the board doesn't power up, no voltage even before the the small either tantalum or ceramic capacitor near the two mosfets.
Here is the datasheet of the exact switch:
It's the switch pictured at the very top right corner.
Comment