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Why does my tablet respond to S-Pen but not my fingers?

Why does my tablet respond to S-Pen but not my fingers?

I just finished repairing one problem I had, where the screen gets all discolored. Once I closed it up and started it, it would not respond to my touch, nothing. I tried the S-Pen and it worked fine. Does anyone know what could have caused this? I reopened it and check the ribbon connections, the only one that looks questionable was the central ribbon cable. Now, I don't know much about electronics, but I noticed that on all the other connectors for the ribbon cables, there was a locking switch. I don't think the connection this ribbon cable has one, and I fear that out of ignorance I may have damaged the connector attempting to flip the non-existent locking mechanism. I believe this to be the cable that connects to the front screen (Not the LCD), and is what is used to communicate the touch input. So I think this is where my problem lies. Can someone enlighten me with their perspective on this issue? I think it must be a damaged connector (requiring me to get a replacement motherboard), the ribbon cable isn't fully connected (tried my best), or something else I am not seeing. Hopefully it is fixable, I would hate to have to scrap a tablet just after 5 months of use. Could it possibly be a broken or damaged digitizer? I have dropped it a few times.

Asked by: Guest | Views: 215
Total answers/comments: 5
Guest [Entry]

"Just a thought. This seems rather simple, but there is a function of the tablet that can ignore the fingers while the s pen is nearby. If you tried to touch it with your finger while holding the s pen in the same hand, it would not work with this setting in place.

-David"
Guest [Entry]

"Dear All

The problem is too easy...... just disassemble the back cover of the galaxy note then check all connection ""specially the one near to the power plug"" it must be fitted to the connection line ten assemble it again it will work ""in shaa alla"".

thanks"
Guest [Entry]

What I discovered after encountering this issue is that if my folio cover is folded such that the magnetic edge is in contact with the RHS of the tablet I get issues with touch, but not pen input. If I fold it such that the magnetic edge is on the LHS (or not near the RHS) there is no problem. It's obviously got something to do with the sleep wake function with the folio cover.
Guest [Entry]

My wife's galaxy note had the same problem, nothing else seemed to work until we removed the cover! apparently the same problem that Grobolo was experiencing . Who would've thought. and this after she had been using the same cover, put on the same way, for a long time without problems until she updated it. grrrrrr.
Guest [Entry]

"I just want to thank all the contributors on this thread. This morning, I, too, dropped my tablet (onto a carpeted floor) and ended up with a black screen although I could tell it was still working otherwise. I was upset since I've only had it a few weeks and since I bought it used, well... There went my major investment of Christmas money.

But, with a couple of YouTube videos, and all the suggestions I saw here and other forums where people really do try to help each other, I managed to fix it. Getting the back off was a trial, though and nerve-wracking for an only modestly technical person.

The first time round, I got the screen working but couldn't do any finger swipes, and the S-Pen was intermittent. So off came the back again. This time I made SURE the two cables at the very top (including what I presume is the digitizer) were really and truly aligned with the white guidelines next to the sockets. The tolerances are amazingly tight (every millimeter counts)."