Mac problems #iWoe Having some Mac troubles today. When I press the power button on my Mac Pro I hear a click but the computer doesn’t turn on, no fan, nothing. I reset the SMC memory and replaced the internal PRAM back up battery which worked before but not this time. Pressing the diagnostic button on the main board gives 2 red LEDs when it is plugged in. Is it time to replace the power module? Any advice would be much appreciated.