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Hitachi 55HDS69 - lines in video    
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khnitz



Joined: 11 Feb 2009
Posts: 17
Location: Johnsburg, IL

PostPosted: Sat Sep 05, 2015 3:07 pm    Post subject: Hitachi 55HDS69 - lines in video Reply with quote

I am repairing a Hitachi 55HDS69 that a friend gave me. The original symptoms were that it had no picture or audio. Some diagnosing led to identifying the lower Y-buffer IC board as bad - when the lower was removed, the video would return to the upper half.

I had that lower Y-buffer board repaired. I reinstalled the board and I can now get video and audio - but, there are horizontal lines missing (evenly spaced) across the whole image (see picture).



I'm looking for any help or ideas on where to look next. I do have a copy of the service manual, and have repaired other TVs, etc. in the past. Thanks!
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khnitz



Joined: 11 Feb 2009
Posts: 17
Location: Johnsburg, IL

PostPosted: Sat Sep 12, 2015 8:08 am    Post subject: Updated representative image Reply with quote

For some reason, tinypic changed the image of the error. I've corrected that in the original post.

Anyone have an idea where to look next?
khnitz



Joined: 11 Feb 2009
Posts: 17
Location: Johnsburg, IL

PostPosted: Fri Sep 18, 2015 9:31 am    Post subject: Reply with quote

Yeah, I'm about to throw in the towel on this one...
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