It could be several things causing your problem. First open the cover and make sure the take-up reel is turning, if it is then it could be the take-up reel sensor not sending pulse's to the micro. If the take-up reel is not turning.. then you will need an Idler assy. Also the 'end tape' sensors could be bad.
My suggestion, only because I used to repair vcr's, is to convert the vcr into a boat anchor, and go out and buy you a HI-FI vcr for $70. <g>