Replaced my Casio E115 screen - now touchscreen doesn't work!
I inherited a Casio E115 with a shattered screen. I carefully removed the LCD and touch screen (both were shattered, but the rest of the unit was fine). I took a working LCD and touch screen from a fully functional Casio E105 and installed it into the E115. Now the LCD display is fine on the E115, but the touch screen doesn't work! I touch it, and nothing happens - it doesn't register.
I have the 4-connector touch-screen cable plugged in properly. Does anybody have any ideas of what might be wrong? Are the touch screens on the E105 and E115 just incompatible? I noticed a small metallic sliver that was screwed to the plastic chassis that the display sits in. Does the touch display have to be touching this to close some kind of resistive circuit? It doesn't seem to touch it - I don't really know if that matters.
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Re: Replaced my Casio E115 screen - now touchscreen...
There are 2 things you have to check for.
The touch screen was changed in the middle of production run. The flexible connector & the corresponding socket on the main board were inverted. In other words the exposed track side was moved from upper to lower side. The older type of touch scrteen is no longer available. Casio made the socket available to their service centre to change in on the main board to suit the newer type of touch screen.
If this is the case you will have to get the newer type touch screen to suit the E-115.
The second aspect is that there are 4 self adhesive spacer tapes (approximately 3 mm x 80 mm x 0.5mm thick on the long side & 3 mm x 60 mm x .5 mm on ythe short side) on the periphery of the LCD. This is to keep the touch screen from touching the LCD. This is to prevent Newton's rings as also to prevent malfunction of the touch screen. These are an absolute must.
Other than that the touch screens are absolutely the same.
Hope this helps.
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I believe if you are hardy with this sort of thing you can order a new touch pad from Global Products or www.pacparts.com. The e-115 , e125 and others all the same. Mine is coming from Global now item # 10003145 @ $28.00 I believe. I will know more when mine arrives. The case is not to hard to crack open just be careful.
Once the case is open and motherboard freed turn the mb. over from case. The touch pad removes very easily one ribbon connector and one tape. Tear down pictures @ www.hi-pda.com/usercomment/001215/1.jpg. Be careful to have static band or discharge don't touch except edges and plastic of compact flash. It will take a little work but it is the cheap way.
They are in fact very easy to replace if you:
1. Are very careful not to damage the other parts
2. Can find a replacement
Understand that the screen is actually two different components, first there is the digitizer which is the part that senses your touching the stylus part. It is a clear glass plate that sits in front of the color lcd unit (the other part). If only the glass is broken, then replacing the digitizer is a cinch.
If I remember correctly, the digitizer on the EM-500 is the same as the digitizer as on an E-125. You'll have to check to be sure though.
Anyway, it is not too hard, just needs steady, careful hands...and it helps to have a little experience taking these things apart...