Aggiusta la tua roba Comunità Store

Model A1225 / Mid 2007 and Early 2008 / 2.4, 2.8, or 3.06 GHz Core 2 Duo processor

433 Domande Visualizza tutte

Opzioni

iMac not powering on, but shows signs of life

Hi all,

I have an iMac that suddenly stopped powering on. It doesn’t post or chime, but the dvd drive does make noise, but that’s about it. It was working yesterday (although the hard drive has been failing for some time) anyways, I opened it up, tried without the hard drive, tried without the RAM, tried reseating it. I also tried without the PRAM battery. Status light 1 is always on, and 2 and 3 go on after the dvd drive makes noise. Light 4 never goes on.

Any suggestions?

Rispondi a questa domanda Anch'io ho questo problema

Questa è una buona domanda?

Sì No
Punteggio 0
Aggiungi un commento

1 Risposta

Filtra per:
Più utili Più recenti Più Vecchio

Opzioni

The 4th diagnostic LED is tied to the display so if you have it disconnected it won’t lite up which would be to correct response. LED di diagnostica iMac Intel 24" EMC 2134 e 2211

LED 4 - Indicates that the computer and the LCD display panel are communicating. This LED will be ON when the computer is turned on and video signal is being generated. If the LED is ON and there is no image on the LCD display panel, the LCD display panel or inverter might be installed incorrectly or need replacement.

If your sure you got all of the display cabled connected properly and they are working, then its tell you the T-CON board within the display has a problem or the Inverter.

Questa risposta è stata utile?

Sì No
Punteggio 0

6 Commenti:

@danj can I can confirm this by hooking up an external display? It just stopped working. I checked the diagnostics LED before disconnecting anything other than the bezel, so I'm pretty sure that this is the issue. Thanks.

da

@gaussymousy - worth a try!

da

@danj - Nothing. Does that mean that it is dead, or that the lcd wasn't the problem?

da

@gaussymousy - If the external isn't working then that pushes us to the logic board (GPU)

da

@danj - Could it be the power supply? I noticed that after the optical drive clicks, I can hear a faint on and off buzzing sound from the top left. It buzzes for about half a second, then goes away for half a second and repeats.

da

Mostra 1 altro commento

Aggiungi un commento

Aggiungi la tua risposta

Gaussy Mousy sarà eternamente grato.
Visualizza Statistiche:

Ultime 24 Ore: 0

Ultimi 7 Giorni: 0

Ultimi 30 Giorni: 0

Tutti i Tempi: 46