On Aug 23, 2010, at 11:27 AM, pink74slk wrote: > Hello Mac User, > > I have an iMac G4 USB2.0 and the monitor does not lit anymore. > I replaced the inverter and still the same black monitor. > I then have bought the cable VGA adapter and connect the iMac to my > TV, and here the facts: > > just keep in mind that after the backup I did, I formatted the HDD > > so > > if turn on the iMac, the TV will be black as well, no signal > transmitter > > instead > > starting up the iMac from the boot DVD Leopard, the TV monitor is > white.
Carlo, A white screen means that the screen is getting power, and that your inverter is OK. However, your screen is not getting data, which means that there's a problem in the circuit from your logic board video cable connector to the LCD. The most likely problem is that the video cable is not properly connected to the logic board, or to the LCD, or both. However, if the cable is securely connected to the logic board and the LCD, the next most likely problem is a break in the video cable (also known as the LVDS or low voltage data signal cable) between the logic board and the LCD connector. Because of the way the cable is snaked through the iMac G4's neck, which can flex and swivel, this is a common occurrence. The fix is to replace the neck with a new one. If you do this, make certain you get an exact replacement. There were a bunch of different necks for the iMac G4, depending on screen size and logic board/cpu version, so be careful. Just any old iMac G4 neck may not work. There's a tag on the cable, which will require an Apple Service Manual to decode, that identifies the neck in your machine. It's on the logic board end. Match the code on that tag, and you've got the right neck. Aren't iMac G4s such sweethearts to work on? No wonder Apple moved on to the current cantilever pedestal AIO flat panel form factor rather quickly. Jim Scott -- You received this message because you are a member of the iMac Group, a group for those using Apple iMacs and eMacs. The list FAQ is at http://lowendmac.com/imac/list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to imaclist@googlegroups.com To leave this group, send email to imaclist+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/imaclist
