Problem with RCA r52wh77: Convergence changes depending on brightness - AVS Forum | Home Theater Discussions And Reviews
Forum Jump: 
Thread Tools
post #1 of 2 Old 10-03-2007, 11:08 PM - Thread Starter
Advanced Member
shawnmos's Avatar
Join Date: Nov 2006
Posts: 559
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Liked: 11
My roommate has an RCA r52wh77 52" CRT Rear Projection HDTV that we have in the living room. Basically he bought it broken for cheap. It looks like it was dropped.

I've been messing with it for the past month trying to improve the picture. At first I only played with the service adjustments and tried to compensate for the messed up screen. I finally took it apart and fixed the screen, which had been knocked out of position which caused it to be wavy and not flush. I ended up fooling with the lens focus (both manual and digital) and the color saturation. I probably shouldn't have touched either.

Anyway, it seems like I made the original convergence problems worse. I don't know if it was something I did inside the set, or something I adjusted in the service settings but the screen's convergence changes depending on the brightness. It was always like this, but now it's a lot worse.

Here is a diagram of what is happening since this is hard to describe in words:
TV displaying a dark 4:3 image
TV displaying a bright 4:3 image

As the brightness increases, the shape of the image is no longer square. The corners of the screen are stretching. This really isn't that noticeable when watching a 16:9 image. The problem though is that I'll set the convergence and it'll look fine, but as soon as the brightness changes the colors no longer converge at the sides of the screen and it looks pretty bad.

I'm pretty sure it's an ITC222 Chassis.

Any ideas on how to fix this thing? It doesn't have to be perfect, I just want it to be tolerable.
shawnmos is offline  
Sponsored Links
post #2 of 2 Old 10-04-2007, 12:12 PM
Senior Member
STEVE050's Avatar
Join Date: Aug 2007
Posts: 416
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Funny. Those colors look converged on both your pictures. Also, I think this is some store's 'special' model# - not RCA's actual(None that start with r, none with a 77). Does it have an HD/Digital tuner? Does it say SCENIUM on front?
STEVE050 is offline  
Sponsored Links
Reply Rear Projection Units

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Forum Jump: 

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off