TuxScreen 5v PCMCIA Hack How-To

CAUTION - This process may destroy your TuxScreen!

So, you have a TuxScreen and would like to use 5v. PCMCIA cards in it, here are the steps to make it's PCMCIA slots 5v capable. These instructions remove the 3.3v capibility. In the future I will modify my other TuxScreen and add switchse so that the slots can be changed from 3.3v to 5v at will, independant of each other. When I do this I will post another page with instructions on doing that.

The first step is to open the TuxScreen, to reach the location where the changes need to be made. p> To get into the TuxScreen you must turn it over and remove the seven screws that hold it together.

With the screws removed, open it carefully, there are three cables connecting the top half to the bottom half. These must be disconnected, the following three images show them in more detail.

The first, and widest, cable connects the display.

The second cable connects the touch screen.

The third cable connects the touch pad buttons.

This picture shows the inside of the base of the TuxScreen, this is rotated 180deg. from the earlier images. The area that you will be working in is top center in the image.

Here is a close-up of the work area. The resistors at R337 and R338 need to be removed. This has already been done in this image.
NOTE: You must remove the resistor for the slot you wish to make 5v capable, to make boths slots 5v capable, you should remove both resistors.
The right side (R337) is for the top PCMCIA slot, and the left side (R338) is for the bottom PCMCIA slot.

The final step of the modification is to solder in wires to provide 5v power to the slots. I used 24ga. stranded wire. Each piece is about 1.5" long, with the last .125" striped of insulation and soldered to the board.
Here you can see the 5v wires running from the solder pad just to the upper left of C400 down to the solder pads near R337 and R338.
Now you can reassemble the TuxScreen and test the modification. Simply reverse the disassembly process.

Acknowledgements:
Special thanks to Ken Mcguire for the original idea. His work can be found here.
Erik Anderson has done a variation on Ken's idea that includes switches to select between 3.3v and 5v, he took some pictures, they are here.

	The first step is to open the TuxScreen, to reach the location where the changes need to be made. p> To get into the TuxScreen you must turn it over and remove the seven screws that hold it together.
	With the screws removed, open it carefully, there are three cables connecting the top half to the bottom half. These must be disconnected, the following three images show them in more detail.
	The first, and widest, cable connects the display.
	The second cable connects the touch screen.
	The third cable connects the touch pad buttons.
	This picture shows the inside of the base of the TuxScreen, this is rotated 180deg. from the earlier images. The area that you will be working in is top center in the image.
	Here is a close-up of the work area. The resistors at R337 and R338 need to be removed. This has already been done in this image. NOTE: You must remove the resistor for the slot you wish to make 5v capable, to make boths slots 5v capable, you should remove both resistors. The right side (R337) is for the top PCMCIA slot, and the left side (R338) is for the bottom PCMCIA slot.
	The final step of the modification is to solder in wires to provide 5v power to the slots. I used 24ga. stranded wire. Each piece is about 1.5" long, with the last .125" striped of insulation and soldered to the board. Here you can see the 5v wires running from the solder pad just to the upper left of C400 down to the solder pads near R337 and R338. Now you can reassemble the TuxScreen and test the modification. Simply reverse the disassembly process.