[Doug]

Thanks for all the replies .
It would be nice to know about disassembly
The bottom comes off and the rest is .
attached to the top.
Top has sides.
I sprayed cleaned several times selector switch.
And it could be the switch .
Sometimes when I switch to am comes on then fades away
Like it made contact temporary. Couple times
When turn to am made normal am noise ,I tried to tune and it fade away.
Hopefully it's a power supply issues on main board.

Attach part numbers of the main board,tuner board ,tuner all sango type numbers