hifi engine

Sony HST-V302 tuner memory decay fault

The tuner forgets the station frequencies when switched off -
is there a back-up battery or supercapacitor somewhere,
or EEPROM, or is it held in the microcontroller? Its not
obvious from the manual.
Anyone else had this fault?


Check C221 - 0.22 F


Spot on - thank you very much. Fortunately you can
get at it without having to dismantle the control PCB.
Have replaced it and now to see if it holds its charge
or C201 is leaking