[Plextalk] problem with power button

Hi everyone, My Plextalk Pocket is having problems engaging the power from either turning on or off, requiring several key presses. I am not sure if the cost of getting this fixed would be more cost efficient than just getting another unit, and keeping this one at home for my line-in recordings. I have also found that the lock key is becoming very sensitive to touch. I am not rough on the unit, but I guess many key presses can eventually be negative. Are there any suggestions of what home remedies I might try? I guess I can keep the power save on and use the "any key" to wake up the unit. Thank you, Steve