[Ham-Mac] PowerBook Duo 250 screen.

[Steve]

To be fair...  It's at least 10 years old (discontinued May 1, 1994).
Not sure the Engineers had really planned for the portable 640 x 400  
4-bit active matrix display to last that long.

Do you have a computer store which deals with used computer like we  
do in Toronto, Canada.  They are often a great source of cheap parts.  
Heck get a whole Duo cheap for parts.  Maybe a Duo 280c 640 x 400 6- 
bit active matrix?

More info...  http://www.lowendmac.com/pb/250.shtml

Steve - VA3SPH

On 20-Jul-05, at 5:09 PM, Doug Rosser wrote:

> On 20/07/2005, at 11:16 PM, Cleeve wrote:
>
>
>
>>
>>     My question is:- is this a gradual failure of the LCD screen,  
>> which requires
>> a replacement? if so, then since a "new" replacement may be  
>> difficult to
>> locate in the UK, could a colour screen, which is intended for use  
>> in a
>> PowerBook 280c be fitted and used in a black and white PowerBook  
>> 250 Duo? (the
>> 250 Duo will drive a colour monitor via the dock) this colour  
>> screen is
>> available in the UK.
>>
>>     I would be most grateful for any help and advice which may be  
>> forthcoming.
>> John. G3JVC
>>
> Bad news John
> This is a 'feature' of the mono screen on the 250. It is supposedly  
> due to gradual seepage of air into the the lcd matrix - and of  
> course works from the outside in.
> I don't know of any source of replacement lcds and any 'old stock'  
> are likely to have the same problem.
> Best suggestion is to look for a colour Duo and cannibalize the 250  
> for memory etc to make it work. Ideal replacement is a 2300 with  
> the power PC processor - as it will support more RAM and also can  
> be fitted with any of the colour or Mono screens
> Doug