Question about Hitachi 50SBX70B 50" Rear Projection Television

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Intermittent video dim video usually on turn on then gets normal after a few minutes,but then goes dim again on channel change. ,

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  • John Leonard Feb 13, 2008

    the crt's are very dim when the video is dim, and very bright when video is normal

  • John Leonard Feb 13, 2008

    could you give me the comb filter removable board location or board number thank you

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There is a problem with a video processing board on this set, to repair this usaly means replacing up to 30 capacitors on this board and they are all surface mounted a very fragile, bust bet on this one is to take it in to the shop

Posted on Feb 13, 2008

  • Mike Owens
    Mike Owens Feb 13, 2008

    Yep ..... All video signal run thru what is called the 3YD/C Comb filter, this is a removable and most the times a repairable board, it sits on the signal board, however the ability to remove and replace all the defective capacitor usaly fall way beyond the scope of the backyard Tv repair guy. And being as I see this set is now 11 years old if it gets messed up you most likly will not be able to find a replacment

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http://servicemanuals.vstore.ca/

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