Aggiusta la tua roba Comunità Store

Modello A1418 / Fine 2012 / Processore Core i5 da 2,7 e 2,9 GHz o Core i7 da 3,1 GHz

212 Domande Visualizza tutte

Opzioni

Logic Board Faulty or Damaged?

Hello There... I was wondering if someone can give some clue what is happening in this situation..:

problem: iMac won't turn on...

tests:

1. Removed lcd/glass panel successfully, I notice that NONE diagnostic led was on... so...

I went..:

2. I checked de AC cable, and it gave me the 120V AC from the outlet so we are good...

3. checked inside AC input in the Mac, and also gave me the 120V AC... (good)

4. I plugged in the PSU, and tested some pins with the ground pin... and 3 pins gave me 12V DC. (so I think the PSU is fine)

What else can I try????

Rispondi a questa domanda Anch'io ho questo problema

Questa è una buona domanda?

Sì No
Punteggio 1
Aggiungi un commento

1 Risposta

Filtra per:
Più utili Più recenti Più Vecchio
Risposta Più Utile

Opzioni

The PSU may receive power but is not sending further to the board, before going after a logic board damage i would try with a new power supply. Most of the cases when no diagnostic led is on the board doesn't receive power due to a faulty power supply.

Questa risposta è stata utile?

Sì No
Punteggio 1

5 Commenti:

@kaykay another one hits 500

da

even though the PSU pinout gave me 12V DC on 3 pins?... I will try another psu..

da

Always keeping an eye out for me @mayer. Thank you :)

da

Hello there, after all.. I installed a new PSU, the imac start working again... but.. after several hours the iMac was on.. it turned off... so I checked again inside, and I have no leds on... (again)... I have no clue what is happening...

da

@makibuki //have u found problem. i have the same issue

da

Aggiungi un commento

Aggiungi la tua risposta

jbermudez27 sarà eternamente grato.
Visualizza Statistiche:

Ultime 24 Ore: 0

Ultimi 7 Giorni: 0

Ultimi 30 Giorni: 1

Tutti i Tempi: 253