Cannot play my recorded films

I'm not surprised that it advances on the end. The VCR doesn't know where the end of the taped programme is. You will have to search manually for it. Start at the end of the tape and rewind a few minutes worth of recording then press 'play' and see what you get. If not successful rewind further and try again, etc,etc. Alternatively you could press "play +rewind" which should allow you to watch the record on what is fast (=x2) rewind. It will help you if you know how long the show was and at what point the tape was when recording started.

cut the tape that tangled area and rejoin with sellotape.
Or
Chane the recorder playerhttps://www.google.co.jp/search?q=sellotape&newwindow=1&tbm=isch&tbo=u&source=univ&sa=X&ei=0QNUVaiFAcGOmwXF7oG4BQ&ved=0CC8QsAQ&biw=1920&bih=979#imgrc=WlW70BWBCqz_qM%253A%3BG8Oz9CELNuC-3M%3Bhttp%253A%252F%252Fwww.londongraphics.co.uk%252Fnetalogue%252Fzoom%252Fsellotape_original_adhesive_tapes.jpg%3Bhttp%253A%252F%252Fwww.londongraphics.co.uk%252Fproducts%252FGraphic-Supplies%252FAdhesives-Cutting%252FAdhesive-Tapes%252FSellotape%252F293528_Sellotape-Original-Tape-18mm-x-66m%3B600%3B600

well if the vcr is hooked up and you can watch a show on it put in a tape that has a movie on it then press play if you can see the show take out that tape put in your blank tape find the show on your tv u wish to record press record try this before the show comes on record a little bit of a show like 30 sec or so then rewind and play back to see if it did record if it did just repete this when the show that you want to record comes on hope this is helpfull....

Sounds as though the imager may have failed but make sure you are in video postion instead of memory mode. Little switch behind the lcd screen. Larry's Electronics

Is this a standard-size cassette unit? Is the model number a 2740 or 2750? When you first plug the power in, does the machine make two clicking noises? Does the display show 'CAS' or 'No Cassette'?

While holding the 'Erase' button down, press the 'Rewind' or "Fast Forward' button. It will erase the tape while it rewinds or fast forwards.

Use different tape. Is the tape still attached to the feed spool, or has it become separated ?

you should rewind the tape before playing
if not, then maybe the overwrite tab is open which means to cant rewrite tapes, and you wont film

the head may be dirty, try cleaning the head with a cleaner tape and try recording again.

I have been experiencing the same problem with my Panasonic PV-GS120. I don't know the root cause or real solution, but I found if I keep playing the tape, rewind->play->rewind->play, eventually I would get the image back normal. I think I would try to clean up header with a header cleaner to see if it helps or not. If not, I plan to submit a request to Panasonic support to check out possible solution. Good luck.