Hitachi AX-M173

[tonupteabag]

Hi
I have a Hitachi AX-M173 micro system, The problem i have is typical for this unit, the DAB doesn't work for more than 30secs then just hums loudly, if i only use the dvd,cd,usb or aux it never falters its just on the radio side of the functions. Anyway i have taken the amp apart and found three rough soldered joint's (just happens to be on the DAB power side) also a resistor on the same board that is burnt (R112) i need the resistor value if anyone knows or a schematic that shows what value it is supposed to be.
I do know that someone was uprating these to work properly as the components in question were not very good, i just don't know who it was and what the uprated components are