View Single Post
  #160  
Old 10-20-2016, 12:51 AM
Crist Rigott Crist Rigott is offline
VideoKarma Member
 
Join Date: Oct 2015
Location: Waxahachie, TX
Posts: 1,519
Thanks Bob.

Well I tried aligning the TV this afternoon and evening. Didn't go so good. Using my Eico 221 VTVM and RCA 167A signal generator, I adjusted the Video IF stages by adjusting A1 thru A4 for maximum value on the VTVM. I then adjusted A5,A6, and A7 for the sound alignment.

I then hooked up my Eico 369 and my BK 2010 O'scope. The waveform looked like this:



I then adjusted A1 thru A4 again to get his waveform:



Then I tried playing my DVD. The picture was awful and the sound was very fuzzy even after turning the "Fine Tuning" knob all the way to one end.

I went back and started all over again and made the adjustments and go the same results.

The waveform is centered on 25.MC where it should be on 24.3MC. I am getting about 8 or 9 MC bandwith on my sweep. The frequency for the waveform seems to be off all around. I used my digital freq. counter to set the frequency generator.

I did notice that the peaks and central valley seem awful narrow compared to the picture in Sams.

Any Ideas?
Reply With Quote
Audiokarma