someone gave me a "dead" 23" cinema display last year. i assumed the power brick was bad, but couldn't find one locally. so, i disassembled the display and traced the power wiring coming in from the brick to the circuit board. i found that there was in fact 120V coming from the brick so that wasn't the problem.
after lots of googling, i found this site which proved to be my problem: http://www.ehmac.ca/mac-iphone-ipad-ipod-help-troubleshooting/75311-cinema-display-troubleshooting-parts-2.html the voltage regulator mentioned in that post apparently was undersized by the engineer who designed the circuitry, and burns out after a while. the post recommends a higher-capacity voltage regulator. it is somewhat bigger than the original one, and won't fit in the same location. if memory serves, it just cost a few dollars to buy. what i did was de-solder the faulty regulator and attached 3 wires to the 3 contacts on the board the old regulator was soldered to. then i soldered the new voltage regulator to the proper one of the 3 new wires, wrapped the contacts with electrical tape, and taped it to a spot in the monitor case where there was sufficient room. this isn't for the faint of heart, but if you know your way around a soldering iron (low wattage) and have the nerve to open the case, this might be your fix. you also may be able to persuade a local PC repair shop to do this for you if you provide them the instructions. good luck -- -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list --- You received this message because you are subscribed to the Google Groups "G-Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to g3-5-list+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
