i should have said that the fix that worked for me is mentioned in post #15 of the link i posted in my original reply, and links to pictures (fuzzy, unfortunately) of the location of the voltage regulator on the motherboard are in post #16. post 15 mentions the part number of the suggested replacement voltage regulator as LM1086. here is a link to ebay listings for that item.
http://www.ebay.com/sch/i.html?_trksid=p2050601.m570.l1313.TR0.TRC0.XLM1086&_nkw=LM1086&_sacat=0&_from=R40 On Sunday, June 30, 2013 1:29:44 PM UTC-4, faithie999 wrote: > > 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 [email protected] 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 [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
