Vizio GV47LFHDTV10A No Picture No Sound Fix

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  • Maverick67
    replied
    Re: Vizio GV47LFHDTV10A No Picture No Sound Fix

    Hey I just found this same TV. Someone had put it curbside and I figured why not take a look. Found this thread and dug around. Yup Blown fuse. Up and running now. Thanks for the help.

    Leave a comment:


  • budm
    replied
    Re: Vizio GV47LFHDTV10A No Picture No Sound Fix

    Thanks for the report on what you found bad.

    Leave a comment:


  • Miragui
    replied
    Re: Vizio GV47LFHDTV10A No Picture No Sound Fix

    Hi I just registered to thank the members in this thread.

    It helped me fix my TV, it had the same symptoms no picture an no sound, checked all the voltage regulators and fuses and U4 was bust. Luckily I could source one from and old Xbox360 DVD drive PCB I had laying around.

    Leave a comment:


  • Electronic Handyman
    replied
    Re: Vizio GV47LFHDTV10A No Picture No Sound Fix

    I have the same model GV47LFHDTV10A that has a damaged main board.Anybody have the actual schematic for it?I can only find trouble shooting charts for and I need a true schematic that shows me what parts connect to what.Also if you've the schematic for the audio board and anything else it would be much appreciated.I've had the set sitting in storage so I can give the actual board part numbers but I'd love to fix it.Thank you in advance

    Leave a comment:


  • Nick's Tvs
    replied
    Re: Vizio GV47LFHDTV10A No Picture No Sound Fix

    Bleed4me,
    Don't thank me, I only gave you basic info at first. All that more technical advice was from budm.
    I am glad to hear that you got the set fixed and working however!

    Leave a comment:


  • budm
    replied
    Re: Vizio GV47LFHDTV10A No Picture No Sound Fix

    Glad to hear that the TV is working.

    Leave a comment:


  • bleed4me
    replied
    Re: Vizio GV47LFHDTV10A No Picture No Sound Fix

    After revisiting DU4 TV now FULLY works as it should. HDMI all work as they should now, new voltages

    DU4
    pin 1- 0
    pin 2-1.25
    pin 3- 3.3

    Just want to say a huge thanks to all that chimed in expecially nicktv and budm, couldnt have done it without you. Your knowledge and patience is much appreciated. Learned a great deal with this tv and I have you guys and this forum to thank for that.

    Leave a comment:


  • bleed4me
    replied
    Re: Vizio GV47LFHDTV10A No Picture No Sound Fix

    Well budm you were right they are tricky to solder. Got the voltage readings like you asked and it appears I need to revisit DU4

    DU4
    pin 1-0
    pin 2-0
    pin3 - 3.32

    U5
    pin 1-.71
    pin 2- 1.97
    pin 3- 3.33

    You think that could be the cause of the hdmi issue?

    Leave a comment:


  • budm
    replied
    Re: Vizio GV47LFHDTV10A No Picture No Sound Fix

    You can check and see if the HDMI chips get the Voltage to them or look for damaged chips.

    Leave a comment:


  • bleed4me
    replied
    Re: Vizio GV47LFHDTV10A No Picture No Sound Fix

    I never get a straight answer to the tvs story when I pick them up. I mostly just get "oh it just stopped working". This TV was no different so sadly I have no story to tell. So if it was a surge does it typically ruin the HDMI port itself or is it the board that faults out? As soon as I get home I will most definitely get you the voltage readings.

    Leave a comment:


  • budm
    replied
    Re: Vizio GV47LFHDTV10A No Picture No Sound Fix

    So I am curious about the DCV readings now on those two new ICs.
    So do you know the history of this TV? It might have been hit by the surge which usually also come through the HDMI ports.

    Leave a comment:


  • bleed4me
    replied
    Re: Vizio GV47LFHDTV10A No Picture No Sound Fix

    Well parts came in and just finished installing those lil guys. TV powers on as it should with backlight and will now turn off without having to unplug it. I am not sure what is going on with the hdmi ports, plugged in a chromecast and I get nothing on either port. Could it be a setting or are those hdmi ports toast? I did try a dvd player hooked up via rca cables and the picture looks great. The speakers are not plugged in and I wouldnt imagine that interfering with the hdmi ports or am I wrong?
    Last edited by bleed4me; 02-09-2016, 12:40 AM.

    Leave a comment:


  • budm
    replied
    Re: Vizio GV47LFHDTV10A No Picture No Sound Fix

    OK, that is fine, nothing <10 Ohms range.

    Leave a comment:


  • bleed4me
    replied
    Re: Vizio GV47LFHDTV10A No Picture No Sound Fix

    Just checked the resistance, 90.2

    Leave a comment:


  • budm
    replied
    Re: Vizio GV47LFHDTV10A No Picture No Sound Fix

    Originally posted by bleed4me
    As soon as I get home I can get that for you... This wouldn't be about amp rating on that ic would it?
    No, I just want to make sure it is not heavy load on the output pin is causing low output Voltage.

    Leave a comment:


  • bleed4me
    replied
    Re: Vizio GV47LFHDTV10A No Picture No Sound Fix

    As soon as I get home I can get that for you... This wouldn't be about amp rating on that ic would it?
    Last edited by bleed4me; 02-05-2016, 10:27 AM.

    Leave a comment:


  • budm
    replied
    Re: Vizio GV47LFHDTV10A No Picture No Sound Fix

    BTW, can you take the resistance reading between pin 2 and GND of DU4?

    Leave a comment:


  • bleed4me
    replied
    Re: Vizio GV47LFHDTV10A No Picture No Sound Fix

    Parts have been ordered, will report back with results as soon as they come in.

    Leave a comment:


  • budm
    replied
    Re: Vizio GV47LFHDTV10A No Picture No Sound Fix

    Either one will be fine.

    Leave a comment:


  • bleed4me
    replied
    Re: Vizio GV47LFHDTV10A No Picture No Sound Fix

    There is only one way to find out I guess
    does this link look about right?
    http://www.digikey.com/product-detai...4-5-ND/1677149
    or
    http://www.digikey.com/product-detai...3PBF-ND/890204
    Last edited by bleed4me; 02-04-2016, 11:17 PM.

    Leave a comment:

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