Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!dali.cs.montana.edu!milton!uw-beaver!fluke!strong
From: strong@tc.fluke.COM (Norm Strong)
Newsgroups: sci.electronics
Subject: Re: Adding video/audio jack to a TV?
Message-ID: <1991Apr26.151518.24003@tc.fluke.COM>
Date: 26 Apr 91 15:15:18 GMT
References: <1991Apr24.185624.17475@amd.com>
Distribution: usa
Organization: John Fluke Mfg. Co., Inc., Everett, WA
Lines: 30

In article <1991Apr24.185624.17475@amd.com> mmpjh@brahms.amd.com (Javed Hussain) writes:
}Hello netters!
}Does anybody has any experience in hacking a TV to add video/audio inputs
}if it already does not have? I have an old Toshiba TV of which tuner is not
}working. I want to know if I can add a video/audio inputs so that it will
}work with my VCR. I was looking at the schematics of the TV and saw something
}like the following:               ________
}                           --->--|________|
}	                  |
}                          |sound
}                          |
}	       --------------    VIDEO      -----------------
}              |   PIF & AFT  |--------->---|   Video & Chroma|
}	      ---------------              ------------------
}
}I was wondering if I disconnect the line called VIDEO and connect it to
}video out of my VCR, will it work?

I wouldn't recommend this.  Many TV sets have off line power supplies that
leave the chassis hot.  They get away with this because the antenna is
transformer coupled, and all the controls have plastic shafts.  

If you insist, then check the potential of the chassis relative to ground
with the plug inserted in both directions.  If it's completely cold,
you're safe.  

-- 

Norm Strong  (strong@tc.fluke.com)
2528 31st S.   Seattle WA 98144   USA