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My niece put her thumb through my iPod video 5th generation. I bought the screen from iFixit, replaced the screen (Which works and looks great now), however as I was reassembling the iPod and started it up the only button that works is the 'Hold' button at the top of the iPod.
I've tried completely reseting the device with no luck and have tried reconnecting every cable within it.
Any ideas? Much appreciated.
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Disclosure: I do not have an iPod, and so this may not apply to your device.
Soft buttons on many devices, such as cell phones, remote controls, etc. are made of a piece of shaped silicone rubber with a graphite-impregnated pad on the underside of the button. This pad touches a corresponding pair of copper contacts on the circuit board, closing the circuit with the graphite.
Over time, the surface of the contact pad becomes dirty, and no longer conducts electricity,even when you push the button hard.
Open the device, and carefully clean the silicone-graphite contact pads, as well as the copper contacts, with a Q-tip slightly moistened with rubbing alcohol. Don't use too much liquid, since you don't want it running over everything. This will help remove accumulated dust and oil.
If this does not work, you may have to use a knife blade to lightly scrape the silicone-graphite pad surface, exposing fresh material. Do this carefully, since it is easy to cut too much.
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I don't own that device - but in general - some devices won't react if a button is stuck - that must not be the "button" itself - it could also be the switch/contact on the circuit board - maybe you should disassemble it again and try it without the housing, check the contacts and so on
as you can see in Step 14 - the iPod has "cellphone style switches"
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