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Title: No Horizontal adjustment Post by: drakejd1977 on January 18, 2013, 04:24:21 AM I have Kortek 1703N I cannot adjust the Horizontal adjustment. Will not widen just stays skinny. I have changed all caps and every IC in the horizontal circuit. If anybody has any advice please let me know.
Title: Re: No Horizontal adjustment Post by: cowboygames on January 18, 2013, 06:48:20 AM What's the voltage at the center leg of the horizontal output regulator. Should be about 130, if not it may be a voltage regulator IC or related problem
Title: Re: No Horizontal adjustment Post by: Firebird on January 18, 2013, 10:13:46 PM Try replacing the dynamic focus board, it can affect screen size.
Title: Re: No Horizontal adjustment Post by: drakejd1977 on January 19, 2013, 12:33:49 AM It wasn't the dynamic focus board and I had the 130v at the middle pin. I replaced IC401 again and this time it worked. i am guessing i put in a bad chip in. I checked VR 404 voltage at the board and while observing the voltage change. I found there no voltage change past IC 401 for the horizontal size. Change IC 401 and C418. I changed the cap just to be safe. Thanks for the input.
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