Goodmans TV Model GTV69W4VPL C/R Tube widescreen

Discussion in 'General TV Discussions Forum' started by beachcomber, Jan 12, 2008.

  1. beachcomber

    beachcomber
    Standard Member

    Joined:
    Aug 4, 2006
    Messages:
    7
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    1
    Ratings:
    +0
    Hi,

    Had this TV about 2 years.It is displaying a VERY VERY bright Blue screen (No moving picture) with flyback lines.
    There is sound as normal.
    Also when started the picture is just a small square in middle and after a few seconds spreads out to normal display size. It did not do this before either.

    Thanks in advance,

    beachcomber.
     
  2. pawluf

    pawluf
    Standard Member

    Joined:
    Jan 12, 2006
    Messages:
    12
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    1
    Ratings:
    +0
    I would look for a high valued resistor (10k~18k) on the CRT plate.
     
  3. beachcomber

    beachcomber
    Standard Member

    Joined:
    Aug 4, 2006
    Messages:
    7
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    1
    Ratings:
    +0
    Hi Pawluf,

    Thanks for your input I will give this a try in a while. I thought it might have been the tube.

    beachcomber.:)
     
  4. sidyal

    sidyal
    Standard Member

    Joined:
    Nov 17, 2003
    Messages:
    29
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    3
    Location:
    Mancunia
    Ratings:
    +1
    11AK37 chassis.

    In my experience either the CRT has flashed over and blown the TDA6108JF or the CRT base socket has caused the chip failure through arcing.

    There is a feed resistor to the chip on the crt base pcb which can fail, but because you have a saturated blue screen I suspect it is ok as I'd expect the screen to be full white if it had failed.

    Obviously only attempt to rectify this if you are competent with electronics and are suitably qualified, otherwise contact your local repairers. I've had the odd CRT failure but the majority seem to be the output stage.
     
  5. beachcomber

    beachcomber
    Standard Member

    Joined:
    Aug 4, 2006
    Messages:
    7
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    1
    Ratings:
    +0
    Hi Sidyal,

    Thanks for your advice also. I am a retired Machine Engineer and electronics is a hobby of mine although I stopped repairing my own TV's when valves were replaced by transistors.
    I have had the back off and the PCB on the tube neck is looking very clean and there is no sign's of overheating.
    Wife just looked at it and suggested getting a Flat Screem TV, so I may now follow this route. It could be the tube.:smashin:
    Thank you all for your help and will let you know what transpires.

    Many thanks,

    beachcomber.
     

Share This Page

Loading...