how did you know that this was the problem with the touch screen? the "black resistor" I am having the same trouble with my touch screen. I have restored, rebooted, bought 3 different model screens, tried gorilla tape to hold down a tight connection, used 90% alcohol to clean the insides everything. Everything is working find on the ipod except I can't get the touch screen to work and it's driving me nuts!
I am having the exact same problem! I have an ipod touch 2nd gen that I recently bought off ebay and the only problem the guy said it had was the screen would not open. I opened the ipod touch, cleaned it and looked around at the parts and everything looks ok, though I noticed from the headphone jack that the ipod has gotten wet. Everything else from what I know so far works great. The ipod powers up, is recognized by itunes, the battery charges, lcd screen works, I have restored it several times, updated the firmware, and it syncs. I have tried two different screens: #821-0627-03 and 04 but neither is working. I am about to pull my hair out trying to figure out why this screen would not be working! I keep looking at the connector thinking it may have some corrosion inbetween the pins but I can't tell (even with a magnifier) if that's just the color that's off or actual corrosion. I have cleaned the connector also with 90%+ Alcohol, too. Help Help Help PLEASE!