crwdns2933423:0crwdne2933423:0
crwdns2918538:0crwdne2918538:0

crwdns2934243:0crwdne2934243:0 Whisky Lima

crwdns2947189:0crwdne2947189:0:

Power / Boot Issues

crwdns2934249:0crwdne2934249:0:

I have been trying to figure this out but can’t.

The Mac is being quite unpredictable when it is powered on. I have removed the screen to get to the diagnostic LEDs and to change the internal battery.

Basically, when power is plugged in LED 1 is lit up - that is the same no matter what. When the power button is pressed, some times LED 2 will flash on and off, sometimes it stays on for a few seconds and goes off and sometimes it stays on until I turn it off.

The fan will kick in at full speed when the computer stays on for more than a few seconds. There was one time after removing the on board battery when it came on and chimed, then LED 3 was on. It was very dim but it was lit. haven’t been able to get that to happen since.

I have tried removing and re seating the RAM and changed out the sticks without any change.

Any Suggestions?

crwdns2866306:0crwdne2866306:0:

iMac Intel 27" Retina 5k Display

crwdns2915684:0crwdne2915684:0:

open

crwdns2934251:0crwdne2934251:0:

+574323

crwdns2934245:0crwdne2934245:0 Dan

crwdns2947189:0crwdne2947189:0:

Power / Boot Issues

crwdns2934249:0crwdne2934249:0:

-I have been trying to figure this out but can’t. The Mac is being quite unpredictable when it is powered on. I have removed the screen to get to the diagnostic LEDs and to change the internal battery. basically when power is plugged in LED 1 is lit up - that is the same no matter what. When the power button is pressed, some times LED 2 will flash on and off, sometimes it stays on for a few seconds and goes off and sometimes it stays on until I turn it off. The fan will kick in at full speed when the computer stays on for more than a few seconds. There was one time after removing the on board battery when it came on and chimed, then LED 3 was on. It was very dim but it was lit. haven’t been able to get that to happen since. I have tried removing and re seating the RAM and changed out the sticks without any change. Any Suggestions?
+I have been trying to figure this out but can’t.
+
+The Mac is being quite unpredictable when it is powered on. I have removed the screen to get to the diagnostic LEDs and to change the internal battery.
+
+Basically, when power is plugged in LED 1 is lit up - that is the same no matter what. When the power button is pressed, some times LED 2 will flash on and off, sometimes it stays on for a few seconds and goes off and sometimes it stays on until I turn it off.
+
+The fan will kick in at full speed when the computer stays on for more than a few seconds. There was one time after removing the on board battery when it came on and chimed, then LED 3 was on. It was very dim but it was lit. haven’t been able to get that to happen since.
+
+I have tried removing and re seating the RAM and changed out the sticks without any change.
+
+Any Suggestions?

crwdns2866306:0crwdne2866306:0:

iMac Intel 27" Retina 5k Display

crwdns2915684:0crwdne2915684:0:

open

crwdns2934241:0crwdne2934241:0 Whisky Lima

crwdns2947189:0crwdne2947189:0:

Power / Boot Issues

crwdns2934249:0crwdne2934249:0:

I have been trying to figure this out but can’t. The Mac is being quite unpredictable when it is powered on. I have removed the screen to get to the diagnostic LEDs and to change the internal battery. basically when power is plugged in LED 1 is lit up - that is the same no matter what. When the power button is pressed, some times LED 2 will flash on and off, sometimes it stays on for a few seconds and goes off and sometimes it stays on until I turn it off. The fan will kick in at full speed when the computer stays on for more than a few seconds. There was one time after removing the on board battery when it came on and chimed, then LED 3 was on. It was very dim but it was lit. haven’t been able to get that to happen since. I have tried removing and re seating the RAM and changed out the sticks without any change. Any Suggestions?

crwdns2866306:0crwdne2866306:0:

iMac Intel 27" Retina 5k Display

crwdns2915684:0crwdne2915684:0:

open