N'w 12, 2020
crwdns2947189:0crwdne2947189:0:
iMac 20" A1224 dark screen with 9 beeps
crwdns2934249:0crwdne2934249:0:
I have gone through the previous messages about this issue: 3 short + 3 longer + 3 short beeps means EFI ROM checksum failed. I downloaded and created Firmware restoration CD 1.6 for iMac7,1 from Apple support. Turned power on and iMac sucked in the CD and ejected after 1 minute and started beeping cycles again. Questions: # I burned the CD on Windows with PowerISO. Should I try burn the CD on Mac instead? # It seem doing something with the CD. Or it's hardware issues with the ROM or board that firmware refresh won't fix? + Any feedback welcome. Thanks. ps. I remove the screen and couldn’t see any bad connection and also replaced the lithium battery too.
crwdns2866306:0crwdne2866306:0:
iMac Intel 20" EMC 2133 and 2210
crwdns2915684:0crwdne2915684:0:
open
Maw 8, 2020
crwdns2934245:0crwdne2934245:0
Dan
crwdns2947189:0crwdne2947189:0:
iMac 20" A1224 dark screen with 9 beeps
crwdns2934249:0crwdne2934249:0:
- I have gone through the previous messages about this issue:[br] + I have gone through the previous messages about this issue: - 3 short+3 longer+3 short beeps means EFI ROM checksum failed. I downloaded and created Firmware restoration CD 1.6 for iMac7,1 from Apple support.[br] + 3 short + 3 longer + 3 short beeps means EFI ROM checksum failed. I downloaded and created Firmware restoration CD 1.6 for iMac7,1 from Apple support. - Turned power on and iMac sucked in the CD and ejected after 1 minute and started beeping cycles again.[br] + Turned power on and iMac sucked in the CD and ejected after 1 minute and started beeping cycles again. - Questions:[br] + Questions: - 1. I burned the CD on Windows with PowerISO. Should I try burn the CD on Mac instead?[br] - - 2. It seem doing something with the CD. Or it's hardware issues with the ROM or board that firmware refresh won't fix?[br] - - [br] - + # I burned the CD on Windows with PowerISO. Should I try burn the CD on Mac instead? + # It seem doing something with the CD. Or it's hardware issues with the ROM or board that firmware refresh won't fix? Any feedback welcome. Thanks. ps. I remove the screen and couldn’t see any bad connection and also replaced the lithium battery too.
crwdns2866306:0crwdne2866306:0:
iMac Intel 20" EMC 2133 and 2210
crwdns2915684:0crwdne2915684:0:
open
Maw 7, 2020
crwdns2934241:0crwdne2934241:0
Sunyao
crwdns2947189:0crwdne2947189:0:
iMac 20" A1224 dark screen with 9 beeps
crwdns2934249:0crwdne2934249:0:
I have gone through the previous messages about this issue:[br]
3 short+3 longer+3 short beeps means EFI ROM checksum failed. I downloaded and created Firmware restoration CD 1.6 for iMac7,1 from Apple support.[br]
Turned power on and iMac sucked in the CD and ejected after 1 minute and started beeping cycles again.[br]
Questions:[br]
1. I burned the CD on Windows with PowerISO. Should I try burn the CD on Mac instead?[br]
2. It seem doing something with the CD. Or it's hardware issues with the ROM or board that firmware refresh won't fix?[br]
[br]
Any feedback welcome. Thanks.
ps. I remove the screen and couldn’t see any bad connection and also replaced the lithium battery too.
crwdns2866306:0crwdne2866306:0:
iMac Intel 20" EMC 2133 and 2210
crwdns2915684:0crwdne2915684:0:
open