How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Claws224 Your Own Question
Claws224, IEEE Datacommunication Engineer
Category: Mac
Satisfied Customers: 5182
Experience:  IEEE, Microsoft
Type Your Mac Question Here...
Claws224 is online now
A new question is answered every 9 seconds

15 mac powerbook

Customer Question

I have a 15" Powerbook G4 and the display starts flickering and within seconds will eventually go dark. If I toggle the brightness (f1 & f2) the display will 'kick' back in, but I can only toggle up maybe 2 or 3 levels before it'll go dark again. At the moment, I have it on level 2 before it'll go dark.

I'll definitely ship it to you guys for repair, but in your experience, what does that sound like, is it the display? the backlight? or the inverter?
[email protected]
Submitted: 9 years ago.
Category: Mac
Expert:  Claws224 replied 9 years ago.


What is probably happening is that some component on the inverter board is failing as it gets warm and your changing the setting is resetting it for a minute or two till it heats up again.

You can find an inverter from somewhere like or ebay and change it yourself if you no longer have applecare, Here are the instructions to do so

Let us know if you need more info.