This unit is fully tested and working. Automatically detects the source video input signal when connected, etc. Sometimes the "System" light bulb does not always illuminate full time but all of the features are fully functional. If this "System" light goes out, don't worry, it will come back on again and it stays illuminated 90% of the time. Again, this sporadic light bulb issue does not affect any of the video features of this unit. All of the other light bulbs and video features are fully functional. There are PDF manuals for this AVT-8710 unit online.

The AVT-8710 is a multi-system time base corrector/frame synchronizer that accommodates most NTSC, PAL and SECAM video signal standards. It eliminates picture jitter and time base errors from videotape playback and ensures a stable on-screen image through the use of dual-field full-frame reconstruction. It restores distorted or misshapen vertical and horizontal sync and color burst signals.

An integral processing amplifier allows the adjustment of Brightness, Contrast, Color Saturation, Hue and Sharpness. A digital comb filter provides superior video signal decoding and the AGC (Automatic Gain Control) ensures a proper 1V output signal from an input signal range of 0.5 to 2.0 volts. A built-in color bar generator sends out a test pattern when there is no video input. The unit has composite video and S-Video in and out and comes with an external 15VDC power adapter.