[TechAssist] Sony KDP57XBR2 Shrunken Image : Update
- From: "Shoreline Electronics" <jstielau@xxxxxxxx>
- To: "Tech Assist Group" <techassist@xxxxxxxxxxxxx>
- Date: Sat, 3 Apr 2004 09:38:42 -0500
Make : Sony
Model : KDP57XBR2
Problem : Reduced Height and Width
http://www.members.aol.com/jstielau/Sony
A picture of the problem : Click above ...... As you can see , the
vertical size is 1/2 of what it should be and the width is in also.....an
elliptical shaped image!
Went there yesterday for a basic checkout....didn't have service data with
me....I now do.
A quick check of B+ levels from the main power supply board revealed no
problem there
Main B+ is right at 135V , + & - 22V lines are at 20.5 ( should be OK) , +
& - 15V lines are in spec also.
Disconnecting convergence coils made no difference....just made the picture
unconverged at best!
If this was an early model set I'd bet the jungle IC was the problem!
Going into service mode , the vertical size does respond but does not fill
the screen......
Looks like the drive levels are way to low.
Any thoughts or experience on this newer set would be helpful. Going
back Monday with the manual....will pull the tubes and chassis if need be.
No lightbox :-(
==========================
Jeff Stielau
Shoreline Electronics Repair
344 East Main Street
Clinton,CT 06413
860-399-1861
860-664-3535 (fax)
jstielau@xxxxxxxx
========================
"If you push something hard enough it will fall over."
Fudd's First Law of Opposition - Sir Sidney Fudd
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