Question about Hitachi 43UWX10B 43" Rear Projection Television

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Hitachi 43UUWX10B After replacing my IC's to no avail, I think I now need to replace some resistors. I am in need of a parts list or schematic or service manual in order to determine what the part numbers are related to the boards labeling. (ie rk46=AT03195s) Without me purchasing a manual can you help? thanks in advance, Daniel

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  • Daniel Sorrels May 28, 2008

    without a schematic which resistors are those?

  • Daniel Sorrels Jun 16, 2008

    Thanks!!! I actually went and replaced ALL 13 of the resistors; figureed why not at ~1.50 eacha small price to not have to pull the board again soon.
    Reinstalled the board last night, and GOOD AS NEW!!
    Thanks for the help, nothing like the feeling of accomplishment and saving $1000's.
    Thank you again,
    D


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The resistors often burn out on that set when the convergence ic's go. The 3.3ohm 1/2watt metal film resistors those are usually the ones that burn out when the ic's go. you have to unsolder one side and lift the leg up out of circuit to check with a ohms meter. You can not check them in circuit make sure you lift a leg up to check or you will not get a correct reading

Posted on May 28, 2008

  • dawn garrett
    dawn garrett May 28, 2008

    the ones closest to your convergence ic's

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Hello!you mean: colors out of convergence? nothing you can do about that, unless you replace 2 convergence amplifiers I.C. chips, plus all those burned 1 watt low ohms resistors with exact values, which only could be obtained via service manual or schematics. After resistor is burned, there is no way to read color code properly, due to partial evaporation of pigments. this is a "pro" job. If you try or tried, already to converge those "stubborn" crosses, there is more to do, even after you removed and replaced two 20 pin I.C. chips, soldered dead into sweep module, plus located and replaced resistors with precise values, you need to get your settings back to normal, by going into "factory service mode' or, at least into "convergence alignment" menu and fight with those crosses!Don't forget the white "****"! Otherwise, you will be re-servicing your set all over after 30 days of usage.good luck,Alex.

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you can download your schematic that will tell you resistor values and the rest of the circuits and IC indentifications as well as test procedures and more , this is a ten part zip that can be opened with winzip and read with adobe just click here http://www.eserviceinfo.com/downloadsm/12926/Hitachi_50FX30B.html
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or look for an electronic parts supply store around you , but alot of the time they too have to order the parts, ecspecially certain valued resistors or other special valued parts
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I would change both ICs STK392-110 and also the 3.3ohm 1 watt resistors and the 1.8 ohm 1 watt you would need 2 of each resistor. Then your convergence would be new again. You can get replacement ICs and resistors at the following link with free shipping and free instalation instructions with pictures.
http://servicemanuals.vstore.ca/

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They offer a 30 day hassle-free return policy, so if for some reason it wouldn't work for you or isn't the right part, all you'd be out is the return shipping, as the initial shipping is free.
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you can check at vancebaldwin.com or ctechnicians.com

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