09-10-2020, 03:49 PM
Thanks, seems like the problem is in the power bar.
I attached an image where to check voltages in power bar but do be very careful with all that 240v floating around.
Two sections to check, first I marked the +5v pin on each relay in red and the GND pin in black, when all outlets are on each relays should read 5v at those points. If you read 5v but relay doesn't click then it's a relay issue, if you don't get +5v it's something else.
The other section I circled in black, notice it has a grey point marked, this is the common ground, not to be confused with all the ground points on relays. When checking voltages in this section use that point for ground probe.
First check voltage on resistors on input side, I drew a red line across each bank of 4 resistors on each side of DB9. You should see 3.3v going into each resistor, this is what's coming from controller. Then check on other side of resistor and you should have voltage, if not the resistor is the problem.
See what happens with these checks and we will go from there.
I attached an image where to check voltages in power bar but do be very careful with all that 240v floating around.
Two sections to check, first I marked the +5v pin on each relay in red and the GND pin in black, when all outlets are on each relays should read 5v at those points. If you read 5v but relay doesn't click then it's a relay issue, if you don't get +5v it's something else.
The other section I circled in black, notice it has a grey point marked, this is the common ground, not to be confused with all the ground points on relays. When checking voltages in this section use that point for ground probe.
First check voltage on resistors on input side, I drew a red line across each bank of 4 resistors on each side of DB9. You should see 3.3v going into each resistor, this is what's coming from controller. Then check on other side of resistor and you should have voltage, if not the resistor is the problem.
See what happens with these checks and we will go from there.
