Powerbook G4 Titanium Mercury 400 MHz

2 replies [Last post]
Offline
Joined: Jun 5 2007
Posts: 2

My PB G4 Mercury 400 MHz overheated when connected to what appears to now be a defective AC power supply. It no longer turns on as the battery is dead. Opening the case reveals a burnt IC on the mother board in the area of the power supply connector.

I presume it is the MOSFET Power Switching Supply chip. I would like to replace it but have no idea of its indentity as it was burnt byond recognition. Visit here for a photo of the fried chip: http://elitetechnology.us/pbg4timerc.jpg

If anyone knows the identity of this chip, please share it.

Comment viewing options

Select your preferred way to display the comments and click "Save settings" to activate your changes.
dankephoto's picture
Offline
Joined: Dec 20 2003
Posts: 1900
from a 500MLB . . .

Take a look at this:

640x400 jpeg image

Others can probably do the actual ID, I got the MLB and the camera, but ain't gotz the knowhow. Cool Mac

dan k

__________________

|| web page gone - curse you Comcast! | Applish goodies servers offline, sorry! |
» email macdan at comcast.net

Offline
Joined: Jun 5 2007
Posts: 2
Thanks for the photo! It a

Thanks for the photo!

It appears that the chip is a Vishay Si4840DY N-Channel 40-V MOSFET

I'll update the forum on my success or lack thereof.