This is an SL-F1 ribbon connector used to join
together the printer circuit boards in this portable.
Over time, this ribbon connector is prone to fracture causing erratic
behaviour of the VCR. Symptoms include random operation of machine functions
or loss of audio.
If only one or two of the cores in this ribbon can be identified as being
open circuit then it possible to bridge them with a small signal wire. Care
should be taken not to fracture further cores whilst attempting to fix it.
The best solution is to replace the complete ribbon. This involves removing
the plastic hinges which hold the PCBs together.