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SONY VPH-1292Q STREAKING PROBLEM SOLVED
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Interested in purchasing upgrade?
Yes
79%
 79%  [ 39 ]
No
20%
 20%  [ 10 ]
Total Votes : 49

Author Message
azzkicker



Joined: 20 Jan 2009
Posts: 33
Location: Germany

Posted: Fri Oct 16, 2009 4:10 pm    Post subject: parts arrived

hi

parts arrvied, tomorrow will work on neckboards

i made a few pics

regards

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1292 without streaking
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azzkicker



Joined: 20 Jan 2009
Posts: 33
Location: Germany

Posted: Sat Oct 17, 2009 8:32 pm    Post subject: STREAKING has GONE

Thumbs Up


hi dudes

6 hours hard work and the streaking has gone

brightness of 100 and bias of 255 of all tubes no streaking

i have watched a few movies there was always streaking, iron man underworld, gladiator

NOTHING----NOTHING

my digitalcamara has damaged, so i couldnt make pictures

iam so happy, and i hope the neckboards dont damage next time

1 thing i must do

an noisemodd for this bastard


GREAT WORK JOHN

AND THANK YOU SO MUCH for this mod



jjjuuuhhuuuuuuuuu

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1292 without streaking
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speedyandre



Joined: 18 Dec 2006
Posts: 291
Location: Netherlands

Posted: Sat Oct 17, 2009 11:32 pm    Post subject:

Noise reduction isn't very difficult.
I've mounted most fans with blu-tack between them and the chassis, no more humming.
The top exhaust fans have been replaced by silent Papst fans.
I wonder if you have ABL activated, when I do so the neck board 'mute' the video signal.
It looks like a heat problem here, a cold 1292 has no problem but after 30 minutes the muting starts.
However without active ABL I can watch movies as long as I want without any streaking problems Wink

André

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RogueChili



Joined: 31 Mar 2008
Posts: 162
Location: Westfield, MA

Posted: Sun Oct 18, 2009 1:11 pm    Post subject: Re: STREAKING has GONE

azzkicker wrote:

hi dudes

6 hours hard work and the streaking has gone




That is great news!

I am glad the mod worked well for you.

Nice picture without that damn streaking, isn't it?
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azzkicker



Joined: 20 Jan 2009
Posts: 33
Location: Germany

Posted: Sun Oct 18, 2009 2:34 pm    Post subject: Re: STREAKING has GONE

RogueChili wrote:
azzkicker wrote:

hi dudes

6 hours hard work and the streaking has gone




That is great news!

I am glad the mod worked well for you.

Nice picture without that damn streaking, isn't it?




yyeeahhhh damn good picture

so i dont need a G90

regards

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RogueChili



Joined: 31 Mar 2008
Posts: 162
Location: Westfield, MA

Posted: Sun Oct 18, 2009 5:41 pm    Post subject:

No you don't want a G90, I heard they streak;)
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azzkicker



Joined: 20 Jan 2009
Posts: 33
Location: Germany

Posted: Mon Oct 19, 2009 5:18 pm    Post subject:

hi

i was testing with abl enabled

but iam wondering
i have on booth pc boards jumpers?

i have removed the jumper from the pc board near the 120 mm fan

and rum the crt

regards

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speedyandre



Joined: 18 Dec 2006
Posts: 291
Location: Netherlands

Posted: Mon Oct 19, 2009 5:59 pm    Post subject:

I have only one jumper, when it is on the small pcb near the 12cm fan my green and blue neck boards mute the signal.
It's strange that the red neck board has no problems, didn't I have one neckboard that's a different type?


André

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azzkicker



Joined: 20 Jan 2009
Posts: 33
Location: Germany

Posted: Mon Oct 19, 2009 6:03 pm    Post subject:

hi

also the board near the 12cm fan has the jumper with an red wire, the other pcboard near the neckboards hav an jumper to without wire

it look like an jumper from an HDD

i have removed the jumper from the board near the 12cm fan.

then is abl disabled, right?

regards

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azzkicker



Joined: 20 Jan 2009
Posts: 33
Location: Germany

Posted: Wed Oct 28, 2009 7:41 pm    Post subject:

hi

i have no problem with muting tubes, with akb on or off,

so i am the first german 1292 user without streaking Thumbs Up

i have other probs on my machine, there are comes form an damaged wire. the anti streaking mod works perfect.

i love my 1292

Thumbs Up


regards

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speedyandre



Joined: 18 Dec 2006
Posts: 291
Location: Netherlands

Posted: Thu Oct 29, 2009 6:41 pm    Post subject:

I'm looking for known scenes on bd or hd dvd where the streaking is very clear visible.
5th element starts with a flying comet that has a very disturbing horizontal tail.
Subtitles and the white on black text after movies are free of streaking here.

André

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azzkicker



Joined: 20 Jan 2009
Posts: 33
Location: Germany

Posted: Thu Oct 29, 2009 8:32 pm    Post subject:

hi

test Iron Man

or use windows xp starfield screensaver-- there is the best streaking test

run it and look into the tubes

regards

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speedyandre



Joined: 18 Dec 2006
Posts: 291
Location: Netherlands

Posted: Thu Oct 29, 2009 11:09 pm    Post subject:

Do you have different neck boards then I have?
Maybe your red is the same and blue/green are different?
I think I'll leave ABL disabled as it gives no problems and the best picture (and better colour balance).
Next is getting rid of some noise on the background on all tubes when no picture is displayed.
It looks like 480i lines but then moving slowly from top to bottom ....
Also best visible on blue in bright scenes.

André

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RogueChili



Joined: 31 Mar 2008
Posts: 162
Location: Westfield, MA

Posted: Thu Oct 29, 2009 11:28 pm    Post subject:

Andre, one of my 1292’s was so prone to streaking, before the mod, you could see some level of streaking in practically any movie! I am surprised you don’t have a list of movies to test with! Or maybe you machine did not streak as bad a mine did?

I still remember the day I installed my 1292! The first movie I tested with “THE FELLOWSHIP OF THE RING”, my favorite movie for testing audio/video, had a huge streak through the ring as it bounced to the ground. After realizing the cause was the 1292 I felt like throwing up! The projector was removed and the 1252 re-installed.
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speedyandre



Joined: 18 Dec 2006
Posts: 291
Location: Netherlands

Posted: Sat Oct 31, 2009 2:16 pm    Post subject:

My 1292 isn't that bad with streaking and I can make the room dark enough to lower the brightness.
Considering the other problem's I've had with it (I bought it disassembled and not working!) the streaking was a minor flaw Embarassed Mr. Green
More important to me was that I had a blue tube with very low emission for a long time Confused

André

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lachmck



Joined: 09 Jun 2009
Posts: 2
Location: Singapore

TV/Projector: Sony 1292

Posted: Tue Nov 10, 2009 10:34 am    Post subject: Sign me up

Hi Rogue,

I am very excited reading this thread! Recently upgraded my Barco 808 to a too cheap to be true 1292. I found it gave glorious 1080P Shocked but suffers badly from streaking on any bright object on a dark background e.g. anything in space and all movie credits. Sad

I'm in Singapore with limited electrical skills, but plenty of patience. Please let me know when you are ready to sell/ship.

Of course it still sounds like a vacuum cleaner hanging from the ceiling but I might now be motivated to try a fan mod...

Cheers
Lachlan
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FoLLgoTT



Joined: 29 Jan 2009
Posts: 7
Location: Hannover, Germany

Posted: Sat Dec 05, 2009 5:00 pm    Post subject:

Are there any news to about a G90 version of the mod?
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Nils
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RogueChili



Joined: 31 Mar 2008
Posts: 162
Location: Westfield, MA

Posted: Sun Dec 13, 2009 1:09 am    Post subject:

FoLLgoTT wrote:
Are there any news to about a G90 version of the mod?


I will be happy to make the mod compatible with the G90 if someone is willing to send me their spare neck board to inspect and modify. I have the schematics and artwork however without detailed layout drawings I can’t design the physical layout of the mod board.

So if anyone has a spare board and is interested please let me know!
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jchunter



Joined: 02 Jun 2007
Posts: 14


Posted: Wed Dec 16, 2009 12:59 am    Post subject: Interested in this mod

I just bought a 1292 with 1800 hours and all three tubes in clean shape. I'd like to install the streaking repair modification before I take out my 1272 and replace it with the 1292. Is there a kit and/or instructions available?

Thanks

Colin
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dochlywd



Joined: 25 Apr 2006
Posts: 346
Location: Saint Louis, Missouri

Posted: Wed Dec 16, 2009 3:03 am    Post subject:

rogue,

did you ever get a G90 neck board?? I might have one for you!

Doc
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