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17mb24h-2 rewrite VCT49X3G PZ F1 000

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    17mb24h-2 rewrite VCT49X3G PZ F1 000

    Hi, LCD chasis 17mb24h-2, behaves strangely, buttons panel tv everything is ok, but the remote control any key would hit only the function menu, the remote ok, I tried other remote Vestel same problem every key pressed do menu function, changed with an identical CPU but with soft 17mb24-2, for some time I bother rewriting software in processor PZ F1 VCT49X3G 000, so do not speak of EPROM memory 24c64, which was rewritten without success, the same event, this processor VCT49X3G PZ F1 000 can be rewritten by SCL SDA, board mb24h-2, is coupled pl305 SCL SDA GND debug, I connected to it coupled with a programmer postal AVR, which theoretically known to schedule this type processor, but fail to connect to this process, noting that the programmer is ok, I know to do the necessary settings but fail reading, writing, deleting process, we bin according to 512KB to rewrite, but do not know what to done to bring the processor VCT49X3G PZ F1 000 in the stage of rewriting, I tried with separate power 3v2, I tried and 3v2 in postal AVR, I tried with tv in STBY I put pin debug to GND, I put the pin debug in 3v2 fail to connect in any form can not first in my service, so if I can help someone with the exact method of writing this processor VCT49X3G PZ F1 000 per chassis 17mb24h-2, possibly with bin right in My case is not,
    thank you

    #2
    Re: 17mb24h-2 rewrite VCT49X3G PZ F1 000

    You need a UART comunication not TTL to access VCT49X3G PZ F1 000.
    I think the problem of this LCD is the IR sensor from main board or the resistive divider between him and processor.
    The art of fighting without fighting

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      #3
      Re: 17mb24h-2 rewrite VCT49X3G PZ F1 000

      thank you, I thought tx and rx variant, but did not try, I'll try and I'll post the result, only better

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