The blink pattern of the front status LED may not be significant, but the status LEDs in the back will give you more information.
What do they show, and what happens when you hit the power button?
Backpane and front panel status LEDs are blinking synchronized. Power button does nothing even when I press it for several seconds, but before failure this server had auto power-on setup, maybe it still takes effect. Fan on the power unit starts rotation when I plug power cord; in several seconds green status light turns on and flash one time; then it turns on permanently and amber LED is flashing four times; then amber turns off and green remain to shine.
I have the same problem.
The LED on the motherboard beside the 4 post LEDs flashes 3 times amber then stayed green. I have attempted to remove the RAM etc. I don't see any of the POST LEDs light up or hear any beeps. Did you have any luck finding out what the problem was?
That is the normal boot process. When you first apply AC power, there is some initialization.
Once the status finally goes solid green, you should be able to power on the system normally.