My Teac V-900X cassette deck has a problem. When I turn it on, the unit turn on but I can not eject the tape or play it or rewind and FFW it. Basically nothing can be done until 2-3 minutes later, when the unit is "warm up", then I can eject tape, play tape, rew or ffw. It then works just fine and product excellent sound. Please help me how to fix this issue. Thanks a lot.