Panasonic pt-47wx49e ptv convergence & horiz. width narrowing

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bottleneck969
Panasonic pt-47wx49e ptv convergence & horiz. width narrowing

Hello. I have a Panasonic pt-47wx49e projection tv and the convergence & horizontal width are faulty.

Replaced the convergence amp IC's STK392-110 with genuine Sanyo STK392-180 upgrades with no change. Checked The 12 light-blue flamefroof resistors in the vicinity & all test within specs.

Have no adjustment control through setup>convergence or serviceman mode.

I'm attaching pics & hope they are not too large to upload.

Notice how the red gun droops on the top left of the screen & horiz. width narrows in the first pic. It's the worst of the three guns. (Increase monitor brightness to get a better view of pics if needed).

Any help would be appreciated.

Thanks!

ps: also looking for service manual with schematicsred gun only. notice drooping from top left corner & horz. width narrowing

red gun only. notice drooping from top left of screen & horiz. width narrowing

all guns operating

 all guns (r,b,g) operating. no adjustment of any kind possible & horiz. width narrowing.

won't converge

 won't converge & horiz. width narrowing.

won't convege

 won't converge & horiz. width narrowing.

won't converge

 won't converge & horiz. width narrowing.

won't converge

 won't converge & horiz. width narrowing.

won't converge

 won't converge & horiz. width narrowing.

 

jsf2323
Did you check the pico fuses

Did you check the pico fuses ? These are yellow or green in color some are close to the IC's or by the power supply transformer . As yur picture shows you may have problems with one of the IC's not working correcttly . As i do not have a schematic you can see if the IC's have the same voltage . Which ever one is missing certain voltages work with that one . You should have a + & - voltage . Good luck James

Alnp
I remember something about

I remember something about some Panasonics not liking 180"s, to use 120's.

http://www.techlore.com/forum/thread/18685/Panasonic-rear-projector-TV-p...

 

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