• Apple Macbook Pro 15" A1286 - USB device drawing too much power - Fixed!!!

#1 Apple Macbook Pro 15" A1286 - USB device drawing too much power - Fixed!!!  [RISOLTO]


da mac66 21 settembre 2012, 16:35
Hi every one, I am new to this forum and want to share my experience of fixing Apple Macbook, which may help some one and save a fortune.

Last week i got hands on Apple Macbook Pro 15" A1286 with faulty USB ports, the following message appeared:

Immagine

I was getting this message even when nothing was connected to the usb port, tried resetting smc and pram but still same problem. With the help of schematic diagram, I found a small transistor Q4690 responsible for usb power was not supplying required 5V, so replaced one from another Macbook Pro (A1278) and it fixed the problem. You will find this chip on the top side of the logic board (M98 820-2330) with 8 legs and usb icon on it, near usb ports. Same fix will cure other Macbook models.

Re: Apple Macbook Pro 15" A1286 - USB device drawing too much power - Fixed!!!  [RISOLTO]


da Google Adsense [BOT] 21 settembre 2012, 16:35

Chi c’è in linea

Visitano il forum: Nessuno e 0 ospiti

_______________________________
Tutti i diritti riservati. È severamente vietata la copia non autorizzata del contenuto di questo sito Web o di qualsiasi sua parte.
Eventuali marchi, nomi di società, prodotti o servizi pubblicati su questo sito Web appartengono ai legittimi proprietari, sono protetti da copyright e utilizzati solo a scopo informativo.