Superdrive keeps ejecting disc

I have a 1 ghz 17"powerbook, matshita UJ-815 superdrive, running 10.4.2 and all the latest updates, I have run disc first aid, checked and deleted the duplicate fonts, reset the PRAM, restarted with the disc in, re-inserted the disc numerous times in a row, All to no avail, evertime I insert anytype of disc, after about 35 seconds, and a few "reading disc" type of sounds, the disc ejects, this applies to anytype of disc, cd's dvd's new, already burned, etc. I have tried them all. I have read a few other posts about people having the same problem. Apple care has run out, and the nearest apple store is 2 hours away. Any recommendations, I am considering purchasing a new superdrive from here :
link
And then follow this procedure:
http://www.pbfixit.com/Guide/55.8.0.html
Any advice before I proceed would be greatly appreciated!
Thanks!
Greg
[ Edited by Apple Discussions Moderator; href URL ]

RE: superdrive spits out dvd and cds
( msg # 1.: Posted Feb 8, 05 9:58 pm )
Jeffrey Foote
Joined: Jun, 2003
Posts: 9
I have used the procedure below 4-6 times in the last 6 months, has always worked until this go around tonight. I don't see any other suggestions.... so it might help.... I'm trying again now.
Note: I'm using 10.4.2, but no relationship to software recent software install or upgrade... just decided not to work.
•I did read an apple note that changing batteries while unplugged an asleep can mess with power manager...... and that seems to be the case when the disk is quietly never being accessed before eject....
I have the same 17 1ghz powerbook, and just fixed this problem for 2nd time in 6 months. (No clear idea why it happens.... from posts it appears that power manager/battery processes sometimes fool the drive into thinking it must act that way)
anyway, I followed ALL of the suggestions posted in these discussion areas, none worked alone... this is the order that did it.
1. Reset PRAM by restarting holding down apple-option p-r until 2nd restart sound
2. nvram reset (see this post)
Macintosh: How to Reset PRAM and NVRAM
... Article ID: 2238. Created: 1987-06-02. Modified: 2004-06 ... steps in the Solution section of technical document 42642: "Macintosh: Computer Starts to Text-Based Open ...
(basically says restart with option-apple-o-f
at prompt type
reset-nvram (hit return)
reset-all (hit return)
Document No. 2238
http://docs.info.apple.com/article.html?artnum=42642
3. power manager reset-
shut down, unplug, pull battery
- hold down apple-option-shift-power button
- release, then replace battery
-restart
PowerBook G4 (12-inch)  PowerBook G4 (12-inch DVI)  PowerBook G4 (12-inch 1.33GHz)  PowerBook G4 (12-inch 1.5GHz)  PowerBook G4 (15-inch FW 800)  PowerBook G4 (15-inch 1.5/1.33GHz)  PowerBook G4 (17-inch)  PowerBook G4 (17-inch 1.33GHz)  PowerBook G4 (17-inch 1.5GHz)
1. If the computer is on, turn it off.
2. Reset the power manager by simultaneously pressing and then releasing Shift-Control-Option-Power on the keyboard. Do not press the fn (Function) key while using this combination of keystrokes.
3. Wait 5 seconds.
4. Press the Power button to restart the computer.
this worked..... good luck

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