[Duo2400] Re: dark screen

[Russell Weiss]

Thanks !  I did confirm with the folks that I bought the display 
assembly from that the had tested it before shipping.  So I was on the 
same trail that you suggested.

If anyone can point me to the specific fuse on the logic board or power 
board that feeds the inverter board, I would greatly appreciate it.


On Jan 19, 2004, at 4:26 AM, Ben Smith wrote:

>
>
>> -----Original Message-----
>> From: Duo/2400 List [mailto:DuoList at lists.themacintoshguy.com]On 
>> Behalf
>> Of Russell Weiss
>> Sent: Sunday, January 18, 2004 12:54 AM
>> To: Duo/2400 List
>> Subject: [Duo2400] dark screen
>>
>>
>> I'm new to the list and am seeking advice.  I recently had my machine
>> apart to upgrade the hd and ram.  However, when I re-assembled ( no
>> screws left over !) the display was dark.  I could see a very faint
>> trace of the desktop and know I was booting.
>>
>> I purchased another used display and unfortunately get the same
>> behavior.   I had read that perhaps this was due to a bad backlight,
>> but am hoping the display I purchased was not doa.   Any suggestions
>> would be appreciated.
>>
>> Russ
>>
>
> It is probably not the backlight itself, but rather the inverter board 
> that
> drives it (or the power to the inverter board,) I am not a 2400 owner, 
> but
> from other PB's I would suggest that you first check the fuse on the
> inverter board (unless the new screen was a complete assembly with 
> inverter)
> and then check the fuses on the motherboard (also if you can work out 
> the
> pin-out then check that power is getting to the inverter.)
> Hope this helps,
> Ben.
>
>
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