HITACHI P50TP01E Y-Buffers/Sus problem

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  • reaper57
    Badcaps Veteran
    • Sep 2014
    • 216
    • Norway
    #21
    Re: HITACHI P50TP01E Y-Buffers/Sus problem

    Originally posted by tom66
    Hmm, looked like one but it isn't.
    Can you get a clear close up photo of the whole Y-sus... if necessary split it into several images to ensure they are clear and in focus.
    I think I found the transformer that you are talking about (it should be the first attachment). There is also one similar to this one on the top of the board, I took a picture of it as well. I've also attached pictures of the Y and X-sus boards.
    Attached Files
    Keyboard not detected, press F1 to continue...

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      • reaper57
        Badcaps Veteran
        • Sep 2014
        • 216
        • Norway
        #22
        Re: HITACHI P50TP01E Y-Buffers/Sus problem

        Well guys, I forgot to mention that the tv wasn't mine, and the owner no longer wants it fixed. I told them that I had some progress, but I guess the repair was going to cost him more than this whole 8 year old tv so he just didn't want to bother with it anymore.
        Anyways, thanks to everyone who tried to help me, especially tom66.
        I guess it's back to my other projects for me. :P
        Keyboard not detected, press F1 to continue...

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          • Shinju
            Badcaps Legend
            • Mar 2014
            • 1239
            • USA
            #23
            Re: HITACHI P50TP01E Y-Buffers/Sus problem

            Are the buffers good?

              Comment

              • reaper57
                Badcaps Veteran
                • Sep 2014
                • 216
                • Norway
                #24
                Re: HITACHI P50TP01E Y-Buffers/Sus problem

                Maybe, ICs just kept frying every time I turned it on. Turns out the Vscan was bad, but the owner didn't want me to continue with my troubleshooting. I was really hopping to fix this TV, but oh well.
                On the other hand I realized that most of the FETs on the Y-sus board are MOSFETs... (I know it should be obvious, but I guess I just didn't really think about it). So, I guess the oscilloscope tom was talking about was for testing those. It still sounds like a good idea to get one, but I'm not really sure about which one. I prefer a USB one, but I hear that people don't like them very much and prefer standalone ones. Do you think that this is a good one and if not what do you recommend?
                http://www.ebay.com/itm/SainSmart-DD...item461487cb94
                Last edited by reaper57; 10-13-2014, 02:24 AM.
                Keyboard not detected, press F1 to continue...

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                  • tom66
                    EVs Rule
                    • Apr 2011
                    • 32560
                    • UK
                    #25
                    Re: HITACHI P50TP01E Y-Buffers/Sus problem

                    USB scopes are generally a bit rubbish.
                    You can do well just with a good, used analog scope with at least 20MHz of analog bandwidth.
                    Such examples are often available for under $50 on trading sites and eBay.
                    Dual channel, 400V input minimum.
                    Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
                    For service manual, schematic, boardview (board view), datasheet, cad - use our search.

                      Comment

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