[Duo2400] Re: Duo 280c Screen "Whiteout"

[David Gass]

I just fixed a 2300c with that problem. In my case, both the inverter and
the CCF lamp were bad. At least the damage was obvious on both pieces.
Evidently the inverter shorted to a frame screw and blew the CCF
(literally). Got the parts from a cracked screen The Powerbook Guy had. The
way prices are, it appears to be a better deal to buy a whole 2300c for
parts than to buy a whole screen. Your mileage may vary.

    David
    day0ne
    dgass at swbell.net
----- Original Message -----
From: "Jackie Lund" <jackie_lund at jmlgraphics.com>
To: "Duo/2400 List" <DuoList at lists.themacintoshguy.com>
Sent: Sunday, December 15, 2002 12:26 PM
Subject: [Duo2400] Re: Duo 280c Screen "Whiteout"


I tried that additional measure with my 2300, but to no avail, the screen is
still black. Not totally, if you hold it under a bright light you can make
out the desktop, but other than that it's dark. I tried swapping the
inverter board as suggested here, as well as the backlight bulb from the
original cracked screen. Still no dice.

When I try pressing the buttons on the left that are supposed to let you
adjust the brightness of the screen, the little bar at the bottom of the
screen says "Contrast" rather than "Brightness" and the contrast remains all
the way to the left rather than being able to adjust anything. I wonder if
that means anything?

Any ideas anyone?

Jackie


> George,
>
> Sorry for my brief response: off course there are numerous things to try
out
> other
> than selling out. It was good to hear about your screen acting normally
again!
> One
> additional measure is to shut down the machine - remove adapter and
battery -
> and
> then press the power reset button (the thin one on the back of the Duo)
for a
> full
> minute. It may not be neccessary now - but it´s a one stop thing to get at
> irregular
> power management. Getting hold of a replacement screen is of course
another
> viable
> option. It shouldn't be much of a cost nowadays - if needed ;^)
>
> Patrick
>
> George Morris wrote:
>
>> Hi Patrick
>>
>> I left the machine alone for an hour - with all power sources
>> removed, and thankfully it now boots up with the screen intact.  I'm
>> going to be replacing the PRAM battery on this machine in the New
>> Year so I'll check out the screen ribbon cable connector then.  It
>> seemed strange that the screen fading to white happened at regular
>> intervals after booting - about 12 seconds in, that's why I removed
>> all the power incase it was some kind of PRAM "bad data" issue.
>>
>> I really hope it's not a dying inverter board, that will probably
>> mean the end of the road for this 280C.
>>
>> Thanks for your suggestions
>>
>> G
>>
>>> Hello George,
>>>
>>> I had this happen to me twice: once with my wife´s 1400c. That
>>> proved to be an unruly
>>> screen connector cable. I closed and opened the lid a few times,
>>> which seemed to be
>>> enough. If it happens again - I guess I'll have to reseat the ribbon
>>> cable properly.
>>> But then I also had a 2300c with a completely white/grey screen
>>> (perfectly lit though
>>> - and the innards appearing to function normally as well). Someone
>>> hinted at that the
>>> inverter board (right hand side of the screen) needed to be
>>> replaced. I sold the
>>> machine and kept the peripherals - knowing that they will come
>>> cheaper (and possibly
>>> with the RAM maxed out) soon enough. My tip would be to open and
>>> close the lid a few
>>> times. If that doesn´t work: consider looking inside or selling.
>>>
>>> Patrick Selliers
>>>
>>> George Morris wrote:
>>>
>>>>  Yikes!!
>>>>
>>>>  My trusty 280C's screen has just gone completely blanc / white -
>>>>  although the system is still running OK, albeit invisibly.  I
>>>>  restarted a few times and the same thing happens a few seconds into
>>>>  startup - horizontal lines appear - then everything fades away to
>>>>  white!!!
>>>>
>>>>  I suppose this means something has failed.  Anyone have any ideas?
>>>>
>>>>  Thanks
>>>>
>>>>  George


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