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Old 08-27-2024, 01:17 PM
Aperna1985 Aperna1985 is offline
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Join Date: Feb 2018
Posts: 183
Talking

Quote:
Originally Posted by Yamamaya42 View Post
Seems rather straightforward.
1) Short out peaking coil L28, points C&D.
2) Tune in test pattern, synchronize pic if you can (vertical/horizontal).
3) Turn horizontal hold fully clockwise. Adjust horizontal freq B1, UNTIL you see a single vertical blanking bar, IE a split picture, then turn horizontal hold ¼ turn ccw to get lock, and observe correct picture geometry, and adjust as needed.
This is the first steps, and if these fail, there is a problem that needs to be fixed.

Thank you. I didn't understand what a vertical blanking bar was.

The other thing that has me confused is, L28 is just a simple coil that goes between Pin 7 of V7 (video detector and AGC rectifier 6AL5) and Pin 3 of V8 (12AU7 Video Amp) why does it list terminals C&D as if there are a terminal A&B? Also this coil is under the chassis and I have no acess once the chassis is in the cabinet. So I just put a test lead on each side of the coil, then connected then together so I could try to adjust B1. Is that a good way to do this? I was thinking I could disconnect them if I wanted to check the picture. Or are they talking about shorting both codes of L28 to ground? I haven't tried that, I was afraid to cook something.
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