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

[Jackie Lund]

Other than the lamp and the inverter board, what other parts would you
recommend switching, since neither of those replacements had any effect?


> 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