open thread, open topic. Television

Discussion in 'Open Discussion' started by nickb2, May 19, 2017.

  1. nickb2

    nickb2 Wrench. I help when I can

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    Hi guy's, just got back from the north and set up my living room with some cash I had saved.

    I found a used TV on Kijjiji. A toshiba regza whatever LED flat thing. So I threw out my old RCA projection behemouth. This morning, I woke up and turned it on, the picture is quite low in brightness. So I went to menu options, threw contrast and brightness to 100%, no change.

    I then did some google stuff, thought maybe it is a energy saving thing, I don't think this tv has this option.

    Anyway, I thought, I think, I just spent 400$ for a very dim TV.

    I thought maybe the HDMI cable was bad, So I swapped it with a known good monster cable and still same.

    So, since I like repeating myself often, I think I bought a faulty used unit, I am thinking a backlight issue but don't know how to test that.

    Any advice would be very appreciated.

    BTW, when coming back from the north, you have to get used to traffic.:eek:
     
  2. billr

    billr wrench Staff Member

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    Do you know if this TV has one (or a few) back-light, or does it have individual LEDs for each pixel? If it is "over-all" back-lighting, then you may have a chance to check/repair that. What specific model number is this beast?
     
  3. kev2

    kev2 wrench

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    Canadian and not bright ......... sounds normal. :)

    My cable box will adjust bright but only to the TV's set limit...... Does that make sense?

    Glad you are back - what did you need/miss when you got back
     
  4. nickb2

    nickb2 Wrench. I help when I can

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    F U Kev2;), common american subterfuge. I could throw this in a politcal debate, but us Cannucks get the job done whatever the odds., wink again;)
     
  5. nickb2

    nickb2 Wrench. I help when I can

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    Ok, jokes aside, the tv model is a CO6215CO8225K1
     
  6. nickb2

    nickb2 Wrench. I help when I can

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    So, I think my mind is just dull from the north and I bought a shyte tv on the slag, so to speak. I just want to know if I have a hope in heaven or whatever of trying to fix this toshiba with my vey limited knowledge of LED tv`s. But as you all know, I am most willing to dive into it if the cost does not exceed the venture.

    as for this comment,

    I missed mostly the girls in shorts on roller blades. Now I get to see them on my front porch every morning.
     
  7. nickb2

    nickb2 Wrench. I help when I can

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    Oops, gave wrong number. Model number is as follows

    32C120U
     
  8. nickb2

    nickb2 Wrench. I help when I can

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    I found the owners manual on line but could not find the service manual.
     
  9. nickb2

    nickb2 Wrench. I help when I can

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    Obviously, the owners manual is of no help to me. Could it be that a resistor of some sorts is making the backlight dim?

    I have seen some issues with tv's with power supply issue of this sort, but normally, the units would go into protection mode.

    This unit work great, but has a very or little capability to change the brightness. So before Kev2 makes another smart comment, yes I cleaned the screen and blew smoke up it arse.
     
  10. nickb2

    nickb2 Wrench. I help when I can

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    Also, what did I miss most, the cars of modern civilization.

    A neighbor just bought a Q50S, wow does that thing hang a curve. Good thing I don't own that car. Foreseeable future facelift to say the least.

    He asked me if I liked the car, I said I cannot know before I try it. Traction control took over for me, tires hooked great, WAS NOT ABLE TO CONTROL THE CAR< system took over. I handed him the keys and said nice investment, but not for me.
     
  11. billr

    billr wrench Staff Member

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    If it doesn't have LEDs for back-light, then probably a couple of fluorescents, and one could be bad. There are standard IC chips for driving those fluorescents, and maybe Toshiba used one. If so, then we could look at a data-sheet for the chip and do a bit of trouble-shooting. Unless you can find a schematic, you will just have to open it up and post pictures as we trade questions.
     
  12. nickb2

    nickb2 Wrench. I help when I can

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    I think that is exactly the problem. Thx Bill.
     
  13. billr

    billr wrench Staff Member

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    So, what did you have to fix to get it working again?
     
  14. nickb2

    nickb2 Wrench. I help when I can

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    It was a back-light problem.
     
  15. nickb2

    nickb2 Wrench. I help when I can

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    On these tv's, several fluro go out at same time.
     

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