crwdns2933423:0crwdne2933423:0
crwdns2918538:0crwdne2918538:0

crwdns2934243:0crwdne2934243:0 oldturkey03 crwdns2934247:0crwdne2934247:0

crwdns2947189:0crwdne2947189:0:

Powers on then off immediately, bad PSU?

crwdns2934249:0crwdne2934249:0:

Ok I have a imac a1145 that I bought broken, and initially it would turn on randomly and sometimes the fans would speed up to max rpm.  So I took out the logic board and noticed 2 6.3v 1500uf bad caps.  I replaced them with good ones, but now the imac will turn on for a split second and turn back off.  I noticed on the logic board that the #1 green led indicator is on once the power cord is plugged in and #4 red led indicator turns on after I try to start it.  I have looked online for what they mean and have gathered that the #1 is tricky voltage (that's vague), and #4 is overheating.  Is the #1 indicator specifically for the PSU or does it cover the logic board too?  Any ideas or suggestions would be great, I am at my wits end with it and really don't want to start buying unnecessary parts.  Thanks for the help.

crwdns2866306:0crwdne2866306:0:

iMac G5 20" Model A1145

crwdns2915684:0crwdne2915684:0:

open

crwdns2934251:0crwdne2934251:0:

+89185

crwdns2934241:0crwdne2934241:0 Erick

crwdns2947189:0crwdne2947189:0:

Powers on then off immediately, bad PSU?

crwdns2934249:0crwdne2934249:0:

Ok I have a imac a1145 that I bought broken, and initially it would turn on randomly and sometimes the fans would speed up to max rpm.  So I took out the logic board and noticed 2 6.3v 1500uf bad caps.  I replaced them with good ones, but now the imac will turn on for a split second and turn back off.  I noticed on the logic board that the #1 green led indicator is on once the power cord is plugged in and #4 red led indicator turns on after I try to start it.  I have looked online for what they mean and have gathered that the #1 is tricky voltage (that's vague), and #4 is overheating.  Is the #1 indicator specifically for the PSU or does it cover the logic board too?  Any ideas or suggestions would be great, I am at my wits end with it and really don't want to start buying unnecessary parts.  Thanks for the help.

crwdns2866306:0crwdne2866306:0:

iMac G5 20" Model A1145

crwdns2915684:0crwdne2915684:0:

open