Panasonic Receiver SA-HE75, original remote, FM antenna in Manhattan, New York

Panasonic Receiver SA-HE75
been getting lately F70 Error on it
took it to a repair store, they said I need to change the power unit, then they said they can't fix it.
I don't know anything about electronics so it's a goner for me.
putting it up for $20 for parts or best offer
comes with the original remote control, manual and FM antenna.
has great sound and is VERY powerful for a home theater
6.4.6 - 4.2.7 - 2.7.7.1