Zum Hauptinhalt wechseln

Modell A1418 / Ende 2012 / 2,7 & 2,9 GHz Core i5 oder 3,1 GHz Core i7 Prozessor

211 Fragen Alle anzeigen

iMac 21,5" late 2012 lcd backlight not working

Hi,

This iMac has no backlight anymore. the diagnostic leds are all oké. Is this a broken lcd or is this a logic board problem?

Thx for the reply

Beantwortet! Antwort anzeigen Ich habe das gleiche Problem

Ist dies eine gute Frage?

Bewertung 0
3 Kommentare

Using a flashlight can you see the faint image of your desktop icons? You'll need to hold the flashlight at a sharp angle resting on the screen to see.

You might also want to check things using an external monitor as well.

Let us know what you find!

von

Yeah, I can see the desktop icons with A flaslight. Will try with an external monitor

von

Sadly, Dan is completely wrong. It doesn't imply there's a problem with the board at all. The problem is within the screen. How do I know? Because I've replaced a few and there's never been a board problem yet.

What I need to find out is if it's possible to refit a backlight from one with a broken glass onto one with the backlight problem. I have both in stock now.

von

Einen Kommentar hinzufügen

1 Antwort

Gewählte Lösung

Sadly, this implies your logic board needs repair. Either a fuse link or more likely the backlight LED driver burnt.

War diese Antwort hilfreich?

Bewertung 1

2 Kommentare:

I did the test with the external display and this is working fine... So still the fuse or backlight LED driver?

von

Without opening and testing things out I'm just guessing here ;-} The good news its' not as bad as it could be!

You'll need to find someone with the needed skills & tools to dig into repairing your logic boards backlight circuit. This is beyond most DIY and you would still need to find the needed parts which can be tough.

von

Einen Kommentar hinzufügen

Antwort hinzufügen

Mattis wird auf ewig dankbar sein.
Seitenaufrufe:

Letzte 24 Stunden: 0

Letzte 7 Tage: 0

Letzte 30 Tage: 12

Insgesamt: 948