No, my multimeter isnt very accurate. The problem seems to be that the chip is getting its power through the LEDs which are connected to the same ground. I had a similar problem before where a ground wire was completely missing on a PCB and the chip could power itself through the IO pins. The resistors i added worked on some circuits but theres 1 PCB that is still causing a problem. The only difference i can think of is that this box has some LEDs which connect using common positive and its those LEDs which seem to be supplying the power to the chip. Thats weird since the PCBs have a shared ground and the only positive is going through a resistor into an IO pin (nothing else)