If you prise the tin plate off the front and remove the circuitboard from the casting it is also worth checking where the socket is soldered on. This one is "iffy" there as well. Bring back leaded solder!!! The Vr/micro reset chip is located to the right of the connector socket. This is with the main component side up and the socket at the bottom. If it doesnt work still at least you request gets another bump!