There is mold growth inside dehumidifier, how do I get rid of it?

I bought a dehumidifier last year. It worked great last summer. When fall came and I didn't need it anymore, I washed it out with bleach water, dried it (to the best of my ability) and kept it in my bedroom. When this spring came along, I started noticing a really musty smell in my room, and after a lot of investigation and carpet shampooing, I came to the realization that the moldy/musty smell was coming from my dehumidifier. This thing was pretty expensive, and I can not afford to just go out and buy a new one. I have sprayed and sprayed and wiped and cleaned this thing with lysol, bleach water, straight up bleach, tylex mold killer, and pine-sol. But to no avail. It definitely smells better than it did before (funny thing is that it did not have any appearance of mold on the outside or inside the water catch bucket, but it smelled absolutely horrible before I started cleaning it. My one major allergy is mold, and my allergies have been horrible since the spring hit because of this. I might add that I live in an apartment complex that has had a lot of mold problems, but I keep my apartment very clean. Problem is, I can't control every single mold spore, and this particular mold is baaaad...I need help figuring out what to do about my dehumidifier, I have tried to turn it on, but it makes my room smell musty. The problem is not solved. I think the mold is down deep inside the interior of my dehumidifier and I don't know what to do about it. I really need the dehumidifier because my apartment complex has a main system a/c that the management doesn't turn on until it's unbearably hot outside, but the humidity in here is awful. Can anyone help??