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Will a stk392-570 interchange with a stk392-110? Also is there a website where I can find which stks are compatible with each other?

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  • Patrick McAlexander Sep 14, 2010

    I was they would work. Zenith R56W28. I've had to replace the resistors and the 392-110 twice in the last 6 months.

  • Patrick McAlexander Sep 14, 2010

    I will try some 150s. Yeah I have been cleaning them with contact cleaner so its not an issue.

  • Patrick McAlexander Sep 14, 2010

    And thank you for the help.



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No, they are completely different chips. Give me brand, model number.

If you need know best place to buy I can tell you that also.


Posted on Sep 14, 2010

  • SD Tech
    SD Tech Sep 14, 2010

    A few thoughts here: 392-570 is a completely different part than -110.

    With that chip, a few things to do----Upgrade to STK-392-150 and make sure when you replace them you REMOVE ALL THE OLD HEAT SINK GREASE (I presume you did put fresh grease when you replaced them) and clean the heat sink with denatured alcohol or acetone---if you did not do that the old grease acts like insulation---poor heat transfer.

    I do this for a living, I buy mine from SUBURBAN ELECTRONICS in Maryland--they have a online catalog and also are on EBAY----select there advanced search, then search by seller-----sewsales55 is this company.

    A pair of the STK-392-150 chips is under 14 dollars.

    If you have had to replace them in less than 6 months one of two things is wrong----(other than heat grease issues already mentioned) either you just got un-luckly and got a bad one or the set has a problem where the chips are pulling TOO MUCH CURRENT---if the set was operating I would use my hand (after it is on a while) and touch the metal heat sink (just one hand)---IT SHOULD BE MILDLY WARM AND THE FACE OF THE CHIPS SHOULD BE COOLER.

    Good soldering is also important and cleaning bottom of board and using liquid solder flux is also important---a bad solder connection can also cause this kind of problem.

    Let me know if you have questions -------I AM HERE TO HELP YOU.




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