I'm a little surprised that you refer to a picture of an iAudio player when you have an H140.
The LNTP chip is a Linear LTC3440i DC/DC converter. It often breaks when you try to use the wrong charger. Unfortunately, it is often not enough to replace the LNTP. I have examined numerous boards that have been exposed to wrong charging current/voltage, and they have been destroyed beyond repair, since the CPU has been fried as well.
I think Digikey has them in stock, BTW.