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pioneer 64" rear projection...strange problem, can you

 
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benareeno



Joined: 22 Mar 2006
Posts: 1463
Location: ottawa, canada


PostLink    Posted: Tue Feb 15, 2011 7:24 pm    Post subject: pioneer 64" rear projection...strange problem, can you Reply with quote

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The problem is with HD signals...SD seems ok, and the tuner throws a fine pic...but, when I put on an HD pic through component, what I see is green fringing. One might think it's just convergence...but it's not.

The problem as I see it...is a very narrow blue vertical line. Now, this doesn't show up when doing the internal convergence pattern, but rather on the pattern from a test disc. This narrow blue perfectly explains the green fringing that I see...especially in the vertical parts of white text.

Any idea what might cause a very narrow blue vertical on an HD input? I doubt it's astig, as the 480i input looks perfectly fine.

Ben
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macgyver655



Joined: 22 Aug 2007
Posts: 6953
PostLink    Posted: Tue Feb 15, 2011 7:33 pm    Post subject: Reply with quote
ma....dull.......num........ber........ Very Happy
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benareeno



Joined: 22 Mar 2006
Posts: 1463
Location: ottawa, canada


PostLink    Posted: Tue Feb 15, 2011 8:40 pm    Post subject: Reply with quote
I don't get it....
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benareeno



Joined: 22 Mar 2006
Posts: 1463
Location: ottawa, canada


PostLink    Posted: Tue Feb 15, 2011 8:41 pm    Post subject: Reply with quote
643HD5...basically the same as the 730 elite, from what I can tell.
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macgyver655



Joined: 22 Aug 2007
Posts: 6953
PostLink    Posted: Tue Feb 15, 2011 9:13 pm    Post subject: Reply with quote
Well if your saying you did a full multi point convergence while inputting an HD signal...and it converged fine....... then I would need a picture.
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benareeno



Joined: 22 Mar 2006
Posts: 1463
Location: ottawa, canada


PostLink    Posted: Tue Feb 15, 2011 10:40 pm    Post subject: Reply with quote
Indeed I did...but the built in grid looks fine. Perhaps the white lines are a bit wide in the vertical, but it is overall converged.

Now, when I put an HD signal in and bring up the convergence patterns, I can see a real green cast to the picture, and the vertical blue line is very thin.

Sometimes this seems to correct itself after a few hours...could that be a solder somewhere??

I was gently knocking the screen back into place the other night, and after that the problem appeared to be corrected again. At least, for a little while. Maybe a loose connection somewhere?
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macgyver655



Joined: 22 Aug 2007
Posts: 6953
PostLink    Posted: Tue Feb 15, 2011 11:15 pm    Post subject: Reply with quote
benareeno wrote:
Indeed I did...but the built in grid looks fine. Perhaps the white lines are a bit wide in the vertical, but it is overall converged.

Now, when I put an HD signal in and bring up the convergence patterns, I can see a real green cast to the picture, and the vertical blue line is very thin.

Sometimes this seems to correct itself after a few hours...could that be a solder somewhere??

I was gently knocking the screen back into place the other night, and after that the problem appeared to be corrected again. At least, for a little while. Maybe a loose connection somewhere?


Well solder joints can be troublesome.

Try this. While inputting a 1080i signal and select HD bring up the cross hair pattern. Adjust the red to the left and down as far as it will go. Then adjust the blue to the right and up as far as it will go. Now bring up the cross hatch pattern with the grids all separated and look over the different color grids and tell me if you see any differences in them.
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benareeno



Joined: 22 Mar 2006
Posts: 1463
Location: ottawa, canada


PostLink    Posted: Thu Feb 17, 2011 7:23 pm    Post subject: Reply with quote
ok...well, that problem seems to have fixed itself. All I did was adjust the G2...and when I was done...that problem was effectively gone. I just don't understand it....

Noticed a new problem....the tv emits a high pitched noise. Does that mean a bad flyback transformer?
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