Repairing a NAD 7100 with Tuner damage. At first stations could be selected in FM and AM but no audio came out, not even static (white noise), but after re soldering, now its worst. When the FM and AM buttons are pushed the LED lights up for a moment then goes out and the freq is not displayed. Everything else works ok. Voltages for the tuner section seems to be ok, thou I don't have an schematic to be sure. Any help will be appreciated.

Audio Players & Recorders - NAD - C160 Amplifier