Pioneer HTD-330DV System "dvd stop playing watching panasonic" Questions

...dvd player (part of a home theater system - model SA-PT950) that until recently played dvds no problem. Then I noticed that the sound would randomly switch from Movie to Music while playing dvds ...

...dvd and now it won't play in any player... on one it shows up with a square (stop?) symbol and will do nothing anymore. What happened? From the manual: Press STANDBY/ON to put the system in standby, ...

...DVD you brought from America is only rated AC120 volts. So that is not good for a 240-volts system without a transformer. Again if you do get a transformer, system difference could still stop you. ...

...watching any dvd! my dvd freeze the picture after ab 50min-1h watch, than stops. Usually is very difficult to play anything back again. most of the time show the message "no play". If I leave for few ...