We have a Sanyo HDTV. I sent it to the repair shop a while back for this problem and they said nothing was wrong with the picture. We picked tht tv up and brought it home but the problem is still there. It is very annoying to watch because it distorts the color in this location. Do you have any idea what might be causing the problem? If you do do you know how to fix it.
A GRAY BLOB IN THE UPPER CORNER OF SCREEN
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gotta model# 
Richard,
The model number is HT32744
The model number is HT32744
That is a CRT direct view and it sounds like you have a purity error from a magnetic field.
TV: Colored splotch - CRT direct view only
http://www.hdtvmagazine.com/forum/viewtopic.php?t=4809
TV: Colored splotch - CRT direct view only
http://www.hdtvmagazine.com/forum/viewtopic.php?t=4809