crwdns2934243:0crwdne2934243:0 mike

crwdns2947189:0crwdne2947189:0:

How do I fix black screen?

crwdns2934249:0crwdne2934249:0:

Here are the symptoms:

-When you press the power button, the screen flashes white twice, then stays black. Otherwise, everything else starts up normally with the chime and hard drive sounds, etc.

-Shining a flashlight to the screen shows it still works (just no backlight?)

-I've reset the PRAM, no go

-I've replaced the inverter board but that didn't work

-It does work with an external monitor attached

I am currently running an extended Apple hardware test to see if it brings up anything specific.

Could something on the logic board be bad?

Bad CCFLs?

crwdns2866306:0crwdne2866306:0:

iMac Intel 20" EMC 2266

crwdns2915684:0crwdne2915684:0:

open

crwdns2934251:0crwdne2934251:0:

crwdns2934241:0crwdne2934241:0 mike

crwdns2947189:0crwdne2947189:0:

How do I fix black screen?

crwdns2934249:0crwdne2934249:0:

Here are the symptoms:

-When you press the power button, the screen flashes white twice, then stays black. Otherwise, everything else starts up normally with the chime and hard drive sounds, etc.

-Shining a flashlight to the screen shows it still works (just no backlight?)

-I've reset the PRAM, no go

-I've replaced the inverter board but that didn't work

-It does work with an external monitor attached

I am currently running an extended Apple hardware test to see if it brings up anything specific.

Could something on the logic board be bad?

Bad CCFLs?

crwdns2866306:0crwdne2866306:0:

iMac Intel 20" EMC 2266

crwdns2915684:0crwdne2915684:0:

open