New Copygard Remover

Why remove copygard?

Playback Problems - jitter - retrace lines  Bent top  

Playback Problem Letters  

Sony Copyguard remover IC in Sony VCRs-BX-164  Waveforms


The Waveform  

Vertical Interval With added pulses

Standard   Sample-1  Sample-2  Sample-3  Sample-4


VSA-50

Photos:  PCB Bottom   PCB Top   Open   

  PCB  board   board   Parts   Hole Sizes   

Schematic:  Schematic

Waveforms


RX-II

Photos:   Cabnet  PCB top  PCB Bottom


Earlier Patents  Dolby, Okada(Japan),  Goodell,