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Author Topic: LCD or Plasma?  (Read 6809 times)

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Martin_1962

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Re: LCD or Plasma?
« Reply #30 on: 14 September 2006, 14:12:34 »
Quote
my problem is focus, not a colour smear as suggested in that post.

So what causes the poor focus?

WHy didn't you get heavy to get this one sorted?

They can do good TVs, you have had bad luck - one last thing do you switch off or standby?
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Marks DTM Calib

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Re: LCD or Plasma?
« Reply #31 on: 14 September 2006, 14:15:31 »
Sounds like the switch mode is struggling to provide the peek current requirements and as a result the HT is sagging.....probably fixable with a suitable cap or tweak to the circuit.
By the way, Sony dont (or at least didn't) do there own TV PSU designs, they are/were done by Sanken......
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TheBoy

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Re: LCD or Plasma?
« Reply #32 on: 14 September 2006, 14:38:54 »
Mark has hit the problem exactly - the PSU is flawed. During bright colours, the geometry adjusts as it cannot drive the coils hard enough to reach the edges of screen. The focus, I think, is again to PSU underated, and unable to provide the power to drag focus in. Thats why focus is good in middle, but awful at edges.

Its not a one off. I have had 4. I have seen several others. They are awful, horrid, crap, useless TVs, from a lying, deceitful company.

Sony UK got in a bit of trouble for refusing to honour the warranties on this set, basically causing the retailers to have to take a lot of the burden for 'faulty' sets that Sony claimed were 'within spec'
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The Barge Captain

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Re: LCD or Plasma?
« Reply #33 on: 14 September 2006, 15:03:11 »
Blimy - I didn't expect so many reponses for such a quick question. So its definatly LCD, and avoid sony unless i want to spend about 3 grand!
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Martin_1962

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Re: LCD or Plasma?
« Reply #34 on: 14 September 2006, 16:06:51 »
Quote
Sounds like the switch mode is struggling to provide the peek current requirements and as a result the HT is sagging.....probably fixable with a suitable cap or tweak to the circuit.
By the way, Sony dont (or at least didn't) do there own TV PSU designs, they are/were done by Sanken......

So you think sticking a better PSU in would help?
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Martin_1962

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Re: LCD or Plasma?
« Reply #35 on: 14 September 2006, 16:07:53 »
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Blimy - I didn't expect so many reponses for such a quick question. So its definatly LCD, and avoid sony unless i want to spend about 3 grand!

Well I'm going to be saving - 46" X series would do me!
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Martin_1962

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Re: LCD or Plasma?
« Reply #36 on: 14 September 2006, 16:08:30 »
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Mark has hit the problem exactly - the PSU is flawed. During bright colours, the geometry adjusts as it cannot drive the coils hard enough to reach the edges of screen. The focus, I think, is again to PSU underated, and unable to provide the power to drag focus in. Thats why focus is good in middle, but awful at edges.

Its not a one off. I have had 4. I have seen several others. They are awful, horrid, crap, useless TVs, from a lying, deceitful company.

Sony UK got in a bit of trouble for refusing to honour the warranties on this set, basically causing the retailers to have to take a lot of the burden for 'faulty' sets that Sony claimed were 'within spec'

What picture mode is it in? (LIVE, MOVIE ect)
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CaptainZok

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Re: LCD or Plasma?
« Reply #37 on: 14 September 2006, 16:45:00 »
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Mark has hit the problem exactly - the PSU is flawed. During bright colours, the geometry adjusts as it cannot drive the coils hard enough to reach the edges of screen. The focus, I think, is again to PSU underated, and unable to provide the power to drag focus in. Thats why focus is good in middle, but awful at edges.

Its not a one off. I have had 4. I have seen several others. They are awful, horrid, crap, useless TVs, from a lying, deceitful company.

Sony UK got in a bit of trouble for refusing to honour the warranties on this set, basically causing the retailers to have to take a lot of the burden for 'faulty' sets that Sony claimed were 'within spec'

Wow so I do remember some of my TV theory, was thinking last night focus comes from LOPT which is part and parcel of the switch mode so PSU isn't coping properly under load. Looks like I'm not totally brain dead LOL.
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TheBoy

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Re: LCD or Plasma?
« Reply #38 on: 14 September 2006, 16:55:20 »
the lopt is usually not part of psu, but obviously performs a not dissimilar function.

Martin, I tend to vary mode depending on what I watch. And the brightness is turned down (we all know the reason they put brightness up to 100%).

I did consider changing PSU a couple of years back (could have got one from a 36" sony one, not fq but similar, and may have been an easy fix), but simply couldn't be bothered with it, as it wouldn't cure all the issues. I could spend hours playing with additional shielding and filters to try to reduce internal interference....

BUT, why the hell should I when I pay a premium price for a supposed premium product.  A mate bought a no name type Argos special for about a quater of the price of mine, and its a far better TV.

Not going to bother too much with it now, as the tube is going soft (only around 4 yrs old). It needs replacing...
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Del Boy

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Re: LCD or Plasma?
« Reply #39 on: 14 September 2006, 17:04:30 »
Well guys i have got 1 of these only had it 3 months and i love it  8-)
http://www.comet.co.uk/comet/html/cache/455_321443.html
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Martin_1962

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Re: LCD or Plasma?
« Reply #40 on: 14 September 2006, 17:33:55 »
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Not going to bother too much with it now, as the tube is going soft (only around 4 yrs old). It needs replacing...

THats bad mine is 7 years old!
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Martin_1962

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Re: LCD or Plasma?
« Reply #41 on: 14 September 2006, 17:36:13 »
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Well guys i have got 1 of these only had it 3 months and i love it  8-)
http://www.comet.co.uk/comet/html/cache/455_321443.html

Nice price
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Del Boy

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Re: LCD or Plasma?
« Reply #42 on: 14 September 2006, 17:38:43 »
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Quote
Well guys i have got 1 of these only had it 3 months and i love it  8-)
http://www.comet.co.uk/comet/html/cache/455_321443.html

Nice price

Yeah m8 does the job love it very nice pic aswell
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Martin_1962

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Re: LCD or Plasma?
« Reply #43 on: 14 September 2006, 17:45:10 »
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Quote
Quote
Well guys i have got 1 of these only had it 3 months and i love it  8-)
http://www.comet.co.uk/comet/html/cache/455_321443.html

Nice price

Yeah m8 does the job love it very nice pic aswell

The Koreans are coming on - interesting to see the shifts of technology
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