Backlight not working after LCD replacement

Question

MacBook Unibody A1342

2.26 or 2.4 GHz / White plastic unibody enclosure

646 Soru Tümünü görüntüle

Soru Kapandı

jorgecarleitao @jorgecarleitao

İtibar: 1

Gönderildi: 22 Eki 2013

Seçenekler

Backlight not working after LCD replacement

Hi.

I have a MacBook 6,1, serial MC207xx/A and the LCD start flickering, so I replaced it. I replaced it because with an external monitor it worked, and because I knew it was because of the junction of the board with the LCD itself that, for some reason, was not working in some positions. (The new monitor is this one).

After replacement, the backlight was not working (I could see things on the LCD, but very dim). Thus, I changed back to the old LCD to confirm that the backlight was also not working anymore.

I reset the PRAM (option+cmd+R+P) and it still doesn't work.

From the different posts in this website, I tend to think that I might have blown the fuse for the blacklight.

Can someone help me to fix it, or give me some advice on how to do it? I don't know how to solder, but I might have a friend that can do it.

Edit: I confirmed it is not the cable or the monitor: I substituted a full display from another working machine to this one and the blacklight is also not working.

Yanıtlandı! Cevabı görüntüle Ben de bu sorunu yaşıyorum

Bu iyi bir soru mu?

Evet Hayır

Puan 0

Yorum Ekle

1 Cevap

Seçilen Çözüm

originalmachead @originalmachead

İtibar: 116,3b

66

68

359

Gönderildi: 22 Eki 2013

Seçenekler

Could have been the inverter board or cable all along. Cables on these get lots of abuse. Look over the cable for nicks, crimps loose connections.

If this answer is acceptable please remember to return and mark it.

Bu yanıt yardımcı oldu mu?

Evet Hayır

Puan 0

5 Yorum:

Thanks for the reply. The inverter board was not for sure since I was very careful with the new LCD (and the old one was fine). The cable is hard to tell. I had changed the original screen twice and had no problems with the cable. How can I test it?

jorgecarleitao tarafından 22 Eki 2013

I have no suggestion other than continuity test (flex it a bit as it is in use).

originalmachead tarafından 22 Eki 2013

Since the MacBook A1342 uses a LED backlit LCD, there's no inverter cable. All data and power is transmitted through a single cable.

oldturkey03 tarafından 22 Eki 2013

Many times he said he had an LCD (but the link is to an LED). He also claims he checked an inverter board. The identifier (6,1) is for a MBA. We're really getting conflicting information here.

originalmachead tarafından 23 Eki 2013

It is an LCD with an LED (instead of CCFL) backlight

oldturkey03 tarafından 23 Eki 2013

Yorum Ekle

Thanks for the reply. The inverter board was not for sure since I was very careful with the new LCD (and the old one was fine). The cable is hard to tell. I had changed the original screen twice and had no problems with the cable. How can I test it? — jorgecarleitao
I have no suggestion other than continuity test (flex it a bit as it is in use). — originalmachead
Since the MacBook A1342 uses a LED backlit LCD, there's no inverter cable. All data and power is transmitted through a single cable. — oldturkey03
Many times he said he had an LCD (but the link is to an LED). He also claims he checked an inverter board. The identifier (6,1) is for a MBA. We're really getting conflicting information here. — originalmachead