Hilmar
But, your problem sounds like it may be caused by a fault in the
tape-transport mechanism or possibly a jammed or twisted tape that is
stuck in the works and causes the power to automatically shut off. Does
the tape cassette eject properly? If not, you could carefully remove
the top housing of the VCR and watch what happens when you turn it on.
If the tape is jammed, you may be able to see such a problem and gently
extract it. Be sure to unplug the VCR before handling any internal
parts or removing the cover. If you don't want to take a chance on
opening it yourself, a trip to a repair shop is probably necessary.
Good Luck.
Steve McDonald