How do you fix the radio "i can not hear anything

does radio have steering wheel hub controls>?
if not radio is bad. simple,no?
it had a 23 year run,

Check for a amp under one off the seats

cuts out ?
well, all FM radios cut out for.:
1: weak station.
2: stereo can not be held in properly( can be bypassed on most RAD , pick mono)
3: AGC drop out, same as #1

on better radios (RTM) you can defeat these default features.
set the FM to mono channel mode, and now you hear all stations.
also kill the AGC mode. this allows you to hear
the station. and static or both. like a Marconi radio of days of old.
modern radios are programmed to blank weak stations.
tis a fact. im a tech and tuned these features, for 50 years.

ok the fix,
1: move closer to station
2: get a better antenna (vast choices)
3: go to station and turn the gain knob up and get arrested by FCC.

replace radio

tip it out and replace the radio ,it would cost more to replace the output transistors than the radio is worth

here is some free advice, antenna boosters simply amplify the radio signal AND the static so there is no increase in sound quality, plus they pick up all that nice spark plug noise. the upshot is that if you spend money to buy one you will find yourself taking it back out and tossing it or pawning it off on some ****** via eBay.

maybe you need to reset the stations because the battery disconnect will cause it to loose them. try the cd to make sure its not just that , sorry if my answer sounds simple but given the info provided thats all i can give . hope it helps.

get a new radio

the tuner section in the car radio is dying.  It may be time for that XM radio you want.  Buy the easy install kit on ebay.