Question about Hitachi 53SDX01B 53" Rear Projection Television

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Sound, but no picture on some imputs

I get sound but no picture on ANT B and Imput 3 when using vcr and video game respectively. Imput 1 connected to the cable box works fine. Can you help? Thx

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  • markusz Nov 27, 2007

    Thankyou and that is correct...sound, but no picture when I go to Ant B, Imput 3 and also Ant A. Imput 1 and 2 are working fine, though.

  • markusz Nov 28, 2007

    I do have the cable hooked up via coax as well, through the VCR. Keep in mind that Imput 3 has the same prob. I think you were on to it with the first response. Is it difficult to change out the IC on that TV? Are the connections soldered? Thx again

  • markusz Nov 29, 2007

    I tried hooking the cable directly to both A and B and there is still only sound. Imput 3 is a regular AV (red, green and blue). Inputs 1 and 2 are the only component imputs and they are the only one imputs that work properly. All imputs worked properly once the way it is currently set up. Is it possible that I changed a setting and caused this? I don't think so as I have tried all optional settings to no avail...

  • markusz Nov 29, 2007

    Sorry, I mis-typed my last post. Imput 3 was supposed to read regular AV (yellow, red, white). Imput 1 and 2 are component and Imput 3 is regular.

  • markusz Nov 29, 2007

    Just to add another thing...tried the regular AV on Imput 1 just to see if it would work and it doesn't and assume regular AV on Imput 2 doesn't either . So only the component AV's work on the TV and that's it.

  • markusz Nov 29, 2007

    Just to clarify what you probably already know...Imput 1 and 2 have both regular and component AV's.

  • markusz Dec 05, 2007

    Do you have a final solution?



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Theres a digital switch IC on or near the AV panel that needs to be replaced if I`m understanding your question correctly you go into menu and switch to Ant. B & there is sound but no picture correct? If this is correct the IC will have to be replaced or it`s supply voltage is missing.

Posted on Nov 27, 2007

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  • Larry Eastman
    Larry Eastman Nov 27, 2007

    Markusz, you mentioned that Ant. A&B don`t work, but video input 1 & 2 work, this sounds like your only connection from your cable box to your tv is rca cables (yellow,red,white) Do you have a coax cable coming "out" of the cable box and screwed onto Antenna A or B ? If not thats why it isn`t working, you`ll notice that a coax cable (usually black or white cable) is coming from the wall INTO your cable box, you need another one coming from the "out to tv" of the cable box to Ant. A or B on the tv to make the tuner work.

  • Larry Eastman
    Larry Eastman Nov 28, 2007

    the IC`s are usually 16 pin and yes soldered in, AV jack panel usually has to be removed from set also, one more question, is AV 3 regular AV (color coded yellow, red, white) or component RGB ? (red, green, blue). Seems VERY strange that BOTH ant A& B don`t work, I would hook the cable coming from the wall directly to the tv and make sure menu is set to A and try it then to B and try it, makes no sense 2 tuners are fried. If you have the expertise to un-solder & re-solder the IC let me know and I`ll try to find the location # and part # for your switching IC.

  • Larry Eastman
    Larry Eastman Nov 29, 2007

    markusz, I believe that input 3 is component, 1&2 are regular video, take a flashlight and check the color of the female jacks, (not the cables), component on back of cable box is colored red,green & blue and same thing on back of tv, you must use component cable (red,grn.,blue ends) at this connection. hard to write out everything in this small box, do u have your owners manual? It will show proper hook-up. Once properly hooked up your remote should switch thru vid1, vid2, which should be yellow red and white, vid3, red,grn,blue then rf which is coax cable for channels, tv of course has to be on channel 3 or 4 whichever your box requires, and then u change channels on the box, if all else fails call the cable company and have them come out, they definitely can tell u if it`s the hook-up or the tv.



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