I have an iBook G4 Notebook, with 1.42 MHz processor. My cable width is 1.5'' approx. in the back of the screen. my inverter cable is 6 pins I believe. please help. I can't find anything. UNDER OR AT $100!!!
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F1 and F2 on the keyboard make the backlight go dim or get brighter.
connect an external display to the computer if the issue doesn't show up on the external display it's the LCD inverter board that will need to be replaced.
Machine 1. The dim display is likely the result of an old or failing compact fluorescent lamp (CFL), generally refered to as the backlight lamp. This CFL is a long, narrow, delicate, and normally very bright light that runs along the bottom of the LCD screen and is powered by the inverter. You could replace the CFL yourself however or simply look for a used iBook screen assembly or the LCD by itself for about the same cost. CFL sell for $7-15. The first time you attempt to replace it, you should buy two because you'll likely break the first one learning how it work. Watch out for mercury!
Machine 2 The graphic processor unit (GPU) is attached to the logic board using a grid of solder balls. With normal wear and tear the logic board flexes and breaks and cracks the solder joints which results in the same exact symptoms that you are experiencing. The chip must me removed and the solder joints "re-balled" to fix it correctly. Again, you could do this yourself or find a reputable service on eBay for $30-55.
Sometimes, if you grip the iBook with your left hand and apply pressure just below the alt key with your thumb and your fingers on the bottom, while booting, the symptoms go temporarily appear to go away. It's a good way to test for this very common iBook problem.
There's a couple things you can do that may help. Try opening the display to different positiions. Sometimes the display cable inside gets damaged and you may be able to position the display just right to allow the cable to work. This is a long shot but it's woth a try. The other thing is to press the fn key and press the display brightness control to see if there's any difference in brightness. The lcd may be ok, but you may be able to replace the inverter for the display (if you think you can open up and do a bit of disassembly and reassembly). If you want help with this let me know. The displays, inverters, and cables inside are all replaceable and it's considerably less expensive than purchasing a new one. There's several companies that can do the repairs. One is powerbookmedic (dot com). they also have repair how-to guides and videos... if you feel comfortable with do-it-yourself... There's plenty of parts available for the G4...it's a great machine.
That screen will most likely be compatible - I work on these for a living. The G3 laptop screens are usually not compatible with the G4 laptops, but all G4 laptop screens are compatible with eachother (provided they are the same size, of course.
Hi If you are still faced with this problem..... Possibly the video card has gone in the unit. The original screen on the laptop may have had an blown inverter which would not stop the funcioning of the external display. However for the external disply to stop working would suggest the video card. Before going this far have you checked to see if there is power to the external monitor? Have you tried the monitor on another computer? If the monitor works with another computer you can be certain there is more wrong with your poor old iBook. You will need to take it in to be looked at.