FixYa.com
Technical Support, Instructions & Repair Service


Tags:

Hitachi 50UX57B 50 in. Rear Projection Television

Strange Image Flubbering/Convergence Problem,...

posted by Litherish on Nov 30, 2006


I recently picked up this 50" Toshiba RPTV free from a friend who upgraded to a big plasma, and didn't want to try and mess with this one.

One symptom I've noticed is that the screen will go from being normal brightness to suddenly much darker. I have attempted to re-converge the image with the convergence board I unscrewed off the front of the TV. Although when I attempt to align the colors, it will sometimes be fine, normal colors, normal brightness, and I can get the picture relatively converged, but then one of the colors seems to flubber around. It then seems to switch from normal brightness to darker brightness and the convergence is completely different from what I was just converging.

I haven't done anything other then tool around with the convergence board, and I gave it a well needed dusting.

Thanks for any help,
~Trevor

Comment by Litherish, posted on Dec 05, 2006

To sum up the above. The convergence does NOT stay. I forgot to mention that my specific model # is 50UX7K, manufactured in 1991.

Anyone help greatly appreciated,

Thanks much,

~Trevor

Comment by Litherish, posted on Dec 09, 2006

Thanks for the help, I'll replace the STKs and see if it helps!

->Oh yeah, the RPTV is a HITACHI, NOT a Toshiba, which I mistakenly typed above!

Comment by Litherish, posted on Dec 09, 2006

I ordered replacement parts for all 4 of the STKs, they should come in a few days.

Can you explain a little bit more what a Hyper Module is? And where I might find it? I've looked through the service manuals PDF but haven't found it yet. Does it have a different alternative name?

Thanks!
This Problem has been added to the Share Your Expertise Page under "My Work Queue".
Best Solution
posted on Dec 09, 2006
FixYa! (100)

beldar


Rank:Wiz Wiz
Rating: 80%, 119 votes
you "tooled around with the convergence board"
well this chassis has several problems
if the convergence doesnt hold replace both stks
resolder around that area per tosh tech bulletin
the bright problem is probably the hyper module
all toshs should be checked with toshiba website to see if they were part of the recalls for power supply caps

Was this solution helpful? Show your Appreciation by rating it:

This Problem Also Relates To: GE D52GW12 52 in. Rear Projection HDTV-Ready Television Panasonic PT-50LC14 50 in. Rear Projection HDTV-Ready Television Panasonic PT-47WX49 47 in. Rear Projection Television Panasonic PT-40LC12 40 in. Rear Projection HDTV Television Panasonic PT-50DL54 50 in. Rear Projection HDTV-Ready Television Sony Grand WEGA KF42WE610 42 in. Rear Projection HDTV-Ready Television Sony KP-46WT510 46 in. Rear Projection HDTV Television

Can you Help with these Projection Televisions problems?

Hitachi 50UX57B 50 in. Rear Projection...
digital array
what is the digital array for?... Answer This...
Hitachi 50UX57B 50 in. Rear Projection...
projection color tv
my tv has a yellow color and... Answer This...
Hitachi 50UX57B 50 in. Rear Projection...
power up
hitachi 50ux19k will not power... Answer This...
Hitachi 50UX57B 50 in. Rear Projection...
WHITE SCREEN FLICKER
I have a 43" rear... Answer This...
Hitachi 50UX57B 50 in. Rear Projection...
Hitachi 50ux26B
After a recent lightning storm... Answer This...
Repair Service
Find Projection TV Repairman Near You:

FixYa does not evaluate or guarantee the accuracy of any information provided through its proposed solutions, posts, or Expert Assistance Sessions. By entering this site you declare you read and agreed to its Terms. You may NOT copy or distribute the content that appears on this site without written permission from FixYa Inc.
© 2005-2008, FixYa, Inc. or its affiliates
When the original poster rates a solution that was given to his own problem, that rating is locked!
X

Are you sure the solution content is Inappropriate?
   
Tech buddies can communicate directly to answer questions. Become a Tech Buddy and have direct access to your favorite expert for FREE!