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 Post subject: Television Analyzing Simplified by Milton S. Kiver
PostPosted: Dec Sat 31, 2011 11:04 pm 
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Joined: Jan Thu 01, 1970 1:00 am
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Location: Advance, NC USA
In thread about the B&K 1076 Television Analyst, Phil Nelson recommended a book titled Television Analyzing Simplified by Milton S. Kiver as a good tutorial on the use of the B&K Television Analyst. I purchased this book some time ago but never got around to reading it. Since it was recommended, I thought I would take some time to read it hoping I could learn to do a little more with my very similar B&K 1077B Television Analyst.

The first two sections of this book describes traditional TV troubleshooting using an Oscilloscope - and that section is so well written it got me to taking another look at the circuitry in my Zenith 24G26 Porthole TV. I have an Oscilloscope and wished I had read this book when I had my TV on the workbench so I could witness the actual signals. I also have a B&K 1077B and want to learn a little more about using this with television circuitry. The first two sections in this book helped a lot but I know there is a lot for me yet to learn.

One thing I noted in my 24G26 circuit is that the Sync Amp amplifies the signal before sending the signal to the Sync Sep - opposite from the description in this book. Also, it looks to me like the Video Amp also serves as the Sound IF amplifier. Have I got this correct?

Here is an SD of th Zenith 24G26 circuit:
http://www.cerant.com/SD24G26MarkedUp.pdf

Carl


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 Post subject: Re: Television Analyzing Simplified by Milton S. Kiver
PostPosted: Jan Sun 01, 2012 12:56 am 
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Joined: Dec Thu 06, 2007 11:54 pm
Posts: 715
Location: Hayward, California USA
V8A (the first video amp) and V10A both work as sound IF amplifiers. After the video detector (diode, a 1N42 if I read it right), the sound is still modulated onto a 4.5 MHz subcarrier in the video signal. The next tube after V10A detects the audio from the subcarrier.

I have that same book and I am just getting started with my 1077B while fixing an RCA 8TS30.

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(Antique TV collecting) always seemed to me to be a fringe hobby that only weirdos did.


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