bbowens
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Aug 26, 2009, 7:41 PM
Post #14 of 35
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Re: [jts1957] Hitachi Tube TV 27AX3B - Horizontal Lines
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sorry, I'm not a tech (but I do have 15+ years as an electronics mfg engineer). With that said, I see a 2.2uf at c484, and I scraped away some oxidation along the 13 pin IC625. Then, I powered on the tv, and there was about a 1-inch area along the top of the display filled with white horizontal lines, which dissipated and was gone within 30-60 seconds. Tv's been on for about five minutes, now, picture is good. How long of a "burn-in" should I allow before I button up the unit?
Found: The voltage on pin 12 is 14.2,Bplus in on pin 8 26.0 ,pin 13 26.4, pin 2 4.3 . There is an 100uf cap ofpin 13. a 1uf off pin 6,Off pin1 47uf cap.also you could have an 2.2 uf cap bad that is located in the middle of chassis.
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