Posts: 1,162
Threads: 26
Joined: Aug 2005
If it's an original (fullnut) machine (without the black border round the display) then it is possible to remove the display unit.
It's quite a job, and it risks damaging your 41. What you do is take out the battery pack, peel off the feet, and undo the screws under them.
Lift off the bottom case, remove the logic PCB and its connector, the U-shaped centre case (keep this the right way up) and the piece of black card.
Then remve the little plastic strip at the top of the display. Unsolder the connections from the display to the keyboard (note, the display module is static-sensitive, so take care), and take the display module out.
As I said, it's quite a job, and you risk damaging the display module.
If it's a halfnut, then you could try cutting away the heat-staked posts holding the logic PCB to the top case and then re-staking them afterwards, but I wouldn't want to try it. In the halfnut, the display is on the logic PCB, as is the keyboard, so you have to remove the logic PCB to get to the display
Posts: 1,788
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Joined: Aug 2007
The first thing I try when I have a dirty '41 display is try to blow the dust out with a can of compressed gas. I've had good luck just putting the tube into the card reader clip slots and giving it a blow. A couple of times I have had to open up the case on a fullnut and tilt back the display and blow.
I have cleaned a couple of half nuts by sticking the display end in a bowl of warm (almost hot) distilled water and swirling vigourously (I've also used ultrasonic cleaners). Repeat three times with fresh distilled water each time. In the last rinse I place a little Kodak PhotoFlo 200 wetting agent. This helps prevent streaking as the display drys. I shake out the excess water (quite vigorously), let it dry out completely, and pray... I haven't killed one yet. One of the halfnuts had been dropped in a muddy pool and came out looking like new.