Hi. Those can usually be repaired. The problem with most tape machine is that the dew senser eventually go bad. Depending of the type of senser, it can be replaced (in case it is still available) but it can be cut or shorted (depending of the type). The senser is not really needed if you take care of not using the tape after going into a cold to hot situation. Most electronic repair shop that lived in the DV camera era will be able to repair this. You can also do it yourself, the senser is somewhere along the tape path and look like a little square. There is many guide online on how to bypass them.