Datasheet for the tda 8920bth shows mode pin needing 5 volts to activate amp and oscillator pin with 30kohm resistor between neg VSSa and oscillator pin. I take it means -12 volts with 30k resistor to osc pin. The rest is obvious +-25 volts on pin 1 and 2 of amp module ground on pin 3, oscillation on pin 4 and mode on pin 5. Is this correct? So if does not work the module is fried and needs repair?