titanium powerbook screen transplant woes

8 posts / 0 new
Last post
Offline
Last seen: 18 years 10 months ago
Joined: Nov 30 2004 - 21:17
Posts: 5
titanium powerbook screen transplant woes

last year, almost a year ago, i dropped my TiBook 667 DVI and broke one of the hinges. I tried to be careful, but after about a week, I accidentally messed up the video cable to the LCD, and in trying to replace the cable, I killed that display.

Since then, I have gotten two LCDs from 400/500 MHz TiBooks, the VGA models.

However, when I connect them and boot the Powerbook, with either one I get no video image at all, just a gray screen and the backlight...

any ideas?

(i tried resetting the pram with the other display(s) connected (one at a time) and then booting but that didn't help

dankephoto's picture
Offline
Last seen: 11 months 3 weeks ago
Joined: Dec 20 2003 - 10:38
Posts: 1899
Sounds like you done fried yer logic board!

That's the same symptoms I had on my 667. But all may not be lost, read this thread:
http://www.applefritter.com/node/view/4594

which references my page with pics here:
http://mywebpages.comcast.net/macdan/tifriedchip.html

Unfortunately I have no idea where to get a new Q23 chip other than from another MLB Sad

dan k

Offline
Last seen: 18 years 10 months ago
Joined: Nov 30 2004 - 21:17
Posts: 5
...hmm...

*flips over powerbook and looks for that thing*

well bugger all, my Q23 is just fine, and i don't see any other damaged parts around that area...

Beee

any more ideas?

Offline
Last seen: 18 years 10 months ago
Joined: Nov 30 2004 - 21:17
Posts: 5
move along

nothing to see here... :coolmac:

no, not a double post... nah-uh...

dankephoto's picture
Offline
Last seen: 11 months 3 weeks ago
Joined: Dec 20 2003 - 10:38
Posts: 1899
bugger all

well, if it ain't Q23 then some other chip musta got shorted when you munged the cable.

Errr, I am assuming you've got a new LVDS (display data) cable now, right?

dan k

Offline
Last seen: 18 years 11 months ago
Joined: Dec 1 2004 - 17:48
Posts: 3
What the problem is, is that

What the problem is, is that the LCDs for the TiBook 400/500
are not compatible with 550/667 TiBooks.

They are a differnent generation, The 400/500 is codenamed Mercury.
and the 550/667 is codenamed Onyx. They use a different model of
LCD and different Inverters (power driver for LCD).

You can look here http://www.pbfixit.com/Guide/ and you can see in the images between the two models that it has a different Inverter.
Oh, and the Inverters are also not cross compatible, ie: Mercury model Inverter will not "fit" in an Onyx model TiBook.

I recommend selling the two LCD's on ebay, and buying a 550/667 model
(also on ebay).

Edit:
(Also IIRC, the DVI's used even a 3rd LCD model, and may require a
a lcd directly from a 667 DVI).

dankephoto's picture
Offline
Last seen: 11 months 3 weeks ago
Joined: Dec 20 2003 - 10:38
Posts: 1899
re: What the problem is, is that

mageguru wrote:

What the problem is, is that the LCDs for the TiBook 400/500 are not compatible with 550/667 TiBooks.

err, not so! I've used 400/500 LCDs in 'Books from 400 to 867 without any problems. They only ever display 1152x rez, but that's not the issue. Also, please note admiralfrijole has an Ivory 667 DVI, not a Onyx 667 GigE.

Any pre-DVI LCD can work in any TiBook. Any DVI LCD can work in any TiBook. There are some caveats (some significant), but again, those aren't the issues here.

see my page:
http://mywebpages.comcast.net/macdan/tibook_display.html

re: inverter differences. They're of no significance because the inverter is in the body of the 'Book and not in the display. All TiBook LCDs use the same CCFL (or near as dammit), so inverter is irrelevant.

dan k

Offline
Last seen: 18 years 10 months ago
Joined: Nov 30 2004 - 21:17
Posts: 5
[quote]Errr, I am assuming yo

Errr, I am assuming you’ve got a new LVDS (display data) cable now, right?

the new displays are complete units, case, LCD, backlight, and cable, all attached and closed up tight

one of them came straight from a friend's 400 or 500 with a fried mobo (really only one surface mount capacitor blown, but suspected other problem, that mobo is hanging on my wall) and the other display came from an eBay auction...

Log in or register to post comments