CurtPalme.com Home Theater Forum

daveb859 · Joined: 11 Jan 2011 Posts: 12

I just inherited the Sony vph-1271q from my brother. It has not been used in about 3 years, and I was told the fans had been replaced in it except for the 2 above the lenses. Anyway, when I fired it up, it looked fine. After I used it to watch a couple movies, I noticed that the right third of the picture was massively deconverging. The same thing was happening on the left third, though the deconvergence was not as bad. This effect sometimes corrects itself, and sometimes will stay that way as long as the projector is on. One friend has suggested that some capacitors in the projector may have dried out over the years it wasn't used, but I just don't know. The guys over on Avsforum have suggested the projector just needs a replacement board, but I don't know how to figure out which board needs to be replaced, and how much it would cost. Any help/advice would be appreciated. Thanks.

**Curt Palme** · Posted: Tue Jan 11, 2011 9:35 pm Post subject:

Can you post a pix of the test grid when good and when deconverged?

daveb859 · Joined: 11 Jan 2011 Posts: 12

I'll try to over the next day or so. It all depends on how the projector is behaving. Thanks.

daveb859 · Joined: 11 Jan 2011 Posts: 12

Okay,

I was finally able to get a picture when the projector is behaving normally. Here are pictures of it when it is deconverging around the right third of the screen, as well as a little on the left, and when it is normal. I have labeled each. I hope this is what is needed to determine the problem. Any further suggestions I will be happy to do.

Thanks.

**AnalogRocks** · Posted: Sat Jan 15, 2011 11:48 pm Post subject:

Do you have the projector square to the screen?

daveb859 · Joined: 11 Jan 2011 Posts: 12

yes, I do. It may not look that way based on the pictures I took, I know they aren't the best quality. Hopefully, they're good enough to figure out this problem. Thanks.

ecrabb · Posted: Sun Jan 16, 2011 12:03 am Post subject:

So, when you throw up the crosshatch, is it that red pattern is just getting smaller than the other two?

SC

daveb859 · Joined: 11 Jan 2011 Posts: 12

Yes, but only on the right side of the crosshatch. It starts to happen slightly on the left side sometimes, but that usually corrects itself. The right side will correct itself as well, once in a while, and everything looks normal again.

Nashou66 · Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY

Sounds like it could be a bad solder joint on the Convergence board or maybe some caps are beginning to weaken.

With out a spare board to swap out its hard to say.

Athanasios

daveb859 · Joined: 11 Jan 2011 Posts: 12

Okay, it looks like I should try replacing the convergence board in the Sony 1271q. But I've been talking with an aquaintance who has a crt projector (I think he said the brand was Monarch) that he is willing to sell for $200, and has 8" guns compared to the Sony's 7". Would it be wiser to try fixing the Sony first, and if so how costly is a replacement convergence board, or to just replace the Sony with the other projector. Any help would be appreciated. Thanks.

daveb859 · Joined: 11 Jan 2011 Posts: 12

Okay, it looks like I should try replacing the convergence board in the Sony 1271q. But I've been talking with an aquaintance who has a crt projector (I think he said the brand was Monarch) that he is willing to sell for $200, and has 8" guns compared to the Sony's 7". Would it be wiser to try fixing the Sony first, and if so how costly is a replacement convergence board, or to just replace the Sony with the other projector. Any help would be appreciated. Thanks.

draganm · Joined: 08 Mar 2006 Posts: 8990 Location: Colorado

daveb859 · Joined: 11 Jan 2011 Posts: 12

Thanks for the advice draganm. If it's an easy fix, I'll look into the cost of a new board first, since I don't have to make a decision on the Marquee right away. Thanks again.