Sony kp-41ds1 has lamp problem

Discussion in 'General TV Discussions Forum' started by Timh, Jul 3, 2001.

  1. Timh

    Timh
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    Hi all,

    My tv is now 18 month's old and out of guarantee :( and it has recently started to act up, the screen some times goes blue, actualley like a blue sail on the screen, it sometimes correct's it self if I turn the set on and off.
    It look's to me like the convergence is shifting a great amount with the blue lamp.
    I'm starting to wonder if one of my kid's has given it a hard knock when I wasn't about.
    Has anyone any idea as what it could be?
    I will try and add a picture at my pics below if it does it again soon.

    Cheers

    Tim :confused:

    [ 03-07-2001: Message edited by: Timh ]
     
  2. Timh

    Timh
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    Check out the photo of the fault here
    in the faulty tv section.

    [ 03-07-2001: Message edited by: Timh ]

    [ 03-07-2001: Message edited by: Timh ]
     
  3. johnson

    johnson
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    Tim
    Can't see the photo.
    Hav you tried Sony? I know it's out of warrenty but it's not that old.It may be worth a try.
     
  4. Timh

    Timh
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    Johnson, just checked, the picture is still there under faulty tv pic no. p7030001
    I havent tried Sony yet, I want to get some more info about the fault first, my dealer is crap, and I have heard Sony may help after I get the fault fixed. :confused:
    I know what the dealer will say, "sorry mate it's out of guarantee"
    They once quoted a great saying to my Brother "it's within manufactures tolerances" :confused:

    Cheers
    Tim

    [ 04-07-2001: Message edited by: Timh ]
     
  5. Timh

    Timh
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    Problem with my pictures it's in the Home Cinema section now click here

    [ 04-07-2001: Message edited by: Timh ]
     
  6. johnson

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    Don't like the look of that Tim.I had the same problem with my dealer being crap.I told Sony that the dealer was useless and not returning my calls,so Sony sent an engineer from one of their service centers.
    All sorted now.
     
  7. Timh

    Timh
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    It's getting worse, I'm writing to Sony today, wish me luck.

    Tim
    :mad: :mad:
     
  8. johnson

    johnson
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    Good luck m8
    Let me know how you get on.
    Simon
     
  9. Timh

    Timh
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    Cheers Simon, I will post here if I get any joy out of Sony.

    Tim
     
  10. Timh

    Timh
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    Well, I heard from Sony today, they basically need an estimate from a Sony repair centre. As they said "I would like to see if I can offer any assistance. To ascertain what assistance can be offered I require the proof of purchase and an estimate for repair"

    Please Wish me luck

    [ 17-08-2001: Message edited by: Timh ]</p>
     
  11. Timh

    Timh
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    Well...I have an engineer coming tomorrow to do an estimate on my Tv, he want's £37 for the privilege, if he has to take the tv away for an estimate he want's even more. I wonder if I will get it refunded if they do the work.
     
  12. Timh

    Timh
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    My Tv has now gone to a Nordis centre in Crewe for a full estimate to be done, sod's law the screen didn't go blue when the Engineer came round, but he did comment about the smearing and that he may be able to do something about it.<br />He did say after seeing a photo of the fault that it's probably the Blue lamp failing and would be an expensive fix. He is also going to take a look at the RGB with digital broadcast's as the colour is very strong.
     
  13. johnson

    johnson
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    I hope all goes well Tim.I have the name of a good contact at Sony Thatcham if needed.(Well he helped me alot anyway.)<br />Simon
     
  14. Timh

    Timh
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    Simon, the guy helping me out is Martin Foan, is this the person you are talking about. Can you remind me of the fault's your tv had.<br />The estimate I am having is also to fix the poor colour in RGB with digital broadcast's, it's been poor since day one.
     
  15. johnson

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    Yep Martin foan.<br />I had a slight geometry fault on the top left on my first set.Martin replaced the set for a new one.<br />The second set had some on-digital break-up.They replaced the digital tuner.RGB colour perfect on new tuner.<br />Then I started getting an intermittent problem with the blue lamp.Martin replaced the set for a new one!<br />Can't ask better than that.He did offer my money back both times as well.<br />Simon
     
  16. Timh

    Timh
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    Simon, You seem to have had great service from this person, I take it this was while your TV was still under guarantee.I didn't know about your blue lamp problem, I hope it isnt a common fault, which could return again after the fix.<br />Still waiting for the estimate, I will post here when I hear from them.
     
  17. johnson

    johnson
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    Tim<br />Yes it was still under warrenty.<br />My blue lamp problem manifested itself as all the blues being very out of focus.<br />When it first happened I could see lots of blue smearing on dark objects.When I went into manual convergence,the red arrows were fine but both the blue arrows were just a blur,you couldn't see they were arrows.<br />When I switched the tv on the next day the problem had gone,and it went on intermittently <br />Simon
     
  18. Timh

    Timh
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    Iv'e got the estimate now, it's £335.58p, which is to replace the failed blue lamp.Cheaper than I expected. Sadly the rgb colour is within manufacturer's tolerance, we've all heard that one before haven't we.
     
  19. Timh

    Timh
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    The shop doing the repair has now heard from Sony, Sony will supply the new lamp and I will have to pay for the labour, which is £60 + v.a.t which isnt to bad. Wow those lamps are a bit pricey.
     
  20. delta

    delta
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    That's good news Tim. For the record I had a Philips 46" RP widescreen tv about 5 years ago and I accidentally damaged the screen. The replacement cost £640! I fitted it myself saving another £150! Fortunately I was able to claim from my insurance company.
     
  21. Timh

    Timh
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    £640 for a screen, hope I dont scratch mine, <img src="eek.gif" border="0">

    I just hope they can set the convergence correctly for the blue lamp, I always found the convergence pretty good on this set.

    [ 03-09-2001: Message edited by: Timh ]</p>
     
  22. johnson

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    That's great news Tim.60 pounds doesn't soun much if they're going to instal it properly.<br />Obviously it's not just the convergence.It's the electrostatic and mechanical focus and the 2/4 pole magnet adjustments also.<br />Hope all goes well.<br />When are you likely to get it back?<br />Simon
     
  23. Timh

    Timh
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    Simon, It's the electrostatic and mechanical focus and the 2/4 pole magnet adjustments also. youv'e lost me, whatever that means I hope they get it right.

    I dont know when it will be fixed, the shop said Sony will write to me asking if its ok for me to pay the labour,then I have to write back to say yes,and then they have to supply the lamp and then its up to the shop as to how fast they can fix it, I'm not bothered how long it takes so long as they get it put right the first time .

    Did you ever get the service manual?
     
  24. johnson

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    Tim<br />The service manual should arrive anyday.I've been waiting 16 days so far.<br />I've picked up some info from th U.S forums and downloaded some Sony service manuals.<br />The electrostatic focus is I think the electronic focus of the lamp itself onto the lens.<br />The mechanical focus is the focus from the lens to the mirror and is adjusted by undoing a wingnut on the lens and moving the lens.<br />The service manuals have a set of procedures for doing these.<br />If you've ever had the front or back of your set off you might have seen a small panel with six adjusters on(hex headed).<br />These are 2 for each lamp.1 for adjusting the electrostatic focus and the other for grayscale.<br />Oh I forgot to mention they need to setup the greyscale also!<br />The 2/4 pole magnet adjustments are little rings around the base of the lamps.<br />I have all the info on my pc regarding these,but incase you're not interested,I'll give you a quick version which may not be totaly accurate.<br />Basically you have two seperate adjustments for each lamp.2 and 4 pole magnets.One of these adjusts the defocused point of any dot(or something like that)and the other adjusts theshape of anybeam.I think the 4 pole is used to compensate for any stray magnetic feilds present/ie speakers.<br />Anyway if you would like an accurate version of this I'll have to read a bit.<br />Simon
     
  25. Timh

    Timh
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    Dont you find it great what you can learn on the net, it sounds like you may be able to fit a lamp yourself <img src="wink.gif" border="0"> you never know.

    Iv'e also been tempted to buy a service manual, I would then spend several hours tweaking the geometry and convergence to how they should be set in the factory, then again from what I have read about the Toshiba rptv's the Sony's sound like they are setup better, not good, just better.

    In the states I have heard people budget when buying a rptv, to include having it properly calibrated.
     
  26. johnson

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    On one of the forums from the U.S they have sony engineers as members and from that I've learnt allsorts.Still a novice though.<br />Today I reduced the overscan on my tv to give a sharper image.Convergence needed realigning after,but not difficult when you know how.<br />Full service convergence takes about 10 minutes per format.
     
  27. Timh

    Timh
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    Simon, I wish to learn more, could you please give me a list of forums or websites with this kind of info on.<br />Did you ever find out how to save your convergence settings?

    cheers
     
  28. delta

    delta
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    Tim, if Sony have a good reputation it is because they look after their customers. The engineer should set up your tv after installing the tube and leave it as good as new in every respect. Don't worry.
     
  29. johnson

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    I'll mail you Tim
     
  30. Guest

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    Problem with rgb colours to vivid is there any way<br />to adjust this?<br />Also on ITV digital Channels It takes 7-15 seconds<br />for channel to clear is this normal?

    Thanks

    JOHNM

    PS are any repair manuals available?
     

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