If you got yours from eBay (possibly even the same seller) like I did then mine was deaf as a brick. I could barely pull in any weather radio broadcasts and I can hear 6/7 around here. My first thought is to get it tuned up. My receive was horrible but it was pretty close to being on frequency and putting out proper power. If you have something you can transmit on (ham repeater, etc) try to key up a distant station and see if you can get into it. I could talk into ham repeaters all over the place but couldn't even hear the hang-time until I verified with another radio.
Of course, this is all speculation, my first suggestion is to get it on the bench and tune it up, without that base-line it's anybody's guess.