Panasonic Plasma TX-P50XT50B strange horizontal two lines

[Damtom]

Re: Panasonic Plasma TX-P50XT50B strange horizontal two lines

Yes you right , A board was swapped.

One question I have on my mind.

Could I cause this , by any of this action , swapping A board or disconnecting ribbons from SN board ??

[tw2005]

Re: Panasonic Plasma TX-P50XT50B strange horizontal two lines

Yes you right , A board was swapped.

One question I have on my mind.

Could I cause this , by any of this action , swapping A board or disconnecting ribbons from SN board ??

doubt it. what's vsus set to in that service menu, high or low? can't say I've ever come across burn in panasonic panel before.

[Damtom]

Re: Panasonic Plasma TX-P50XT50B strange horizontal two lines

It was low I just set to high because on low I could see image retention from service menu already !! On high I cant see it

[tw2005]

Re: Panasonic Plasma TX-P50XT50B strange horizontal two lines

guess try it on high, I know it's spoken that they have an algorithm that compensates on the A board for the panel aging so i don't know if that would be an issue since it's come from another TV. Still would be interesting to know the hrs stored on the a board.

[tw2005]

Re: Panasonic Plasma TX-P50XT50B strange horizontal two lines

Caution:
When Plasma panel or A-board is replaced, Vsus should be set to LOW or HIGH.
Procedure
1. Go into main item [VSUS] in Service Mode. LOW or HIGH will be displayed.
2. Press [OK] button to go to TEST stage.
White pattern without On-Screen Display will be displayed during TEST and CONF stage. Press [5] button to display the
On-Screen Display.
3. Press [VOL (-)] button to set to LOW.
4. In LOW setting
a. If no several dead pixel is visible remarkably in white pattern, press [3] button to go to CONF stage.
b. If the several dead pixels are visible remarkably in white pattern, Set to HIGH by press [VOL (+)] button. Press [3] button
to go to CONF stage if the symptom is improved.
5. Press [OK] button in CONF stage to store LOW or HIGH.
6. Exit Service Mode by pressing [Power] button.
Notes:
Do not overwrite because data is written in Peaks-EEPROM after executing adjustment of V-SUS Voltage.

[tw2005]

Re: Panasonic Plasma TX-P50XT50B strange horizontal two lines

on high , what's the voltage of vsus

[Damtom]

Re: Panasonic Plasma TX-P50XT50B strange horizontal two lines

Unfortunately TV is assembled so I can't check voltage.

Procedure for checking running time , doesn't work on this TV

[tom66]

Re: Panasonic Plasma TX-P50XT50B strange horizontal two lines

Hm, interesting that increasing Vsus hides the fault. I had a Samsung PS51D450 which had a grey-ish mark on the screen on full white. Turning Vsus up about 5V cleared this. Must be trying to save every watt, at the expense of performance...

[Damtom]

Re: Panasonic Plasma TX-P50XT50B strange horizontal two lines

There is option in service menu , called 'aging' . how does it work ?

[tw2005]

Re: Panasonic Plasma TX-P50XT50B strange horizontal two lines

Unfortunately TV is assembled so I can't check voltage.

Procedure for checking running time , doesn't work on this TV

did you get this far minus the hrs displayed?

[tom66]

Re: Panasonic Plasma TX-P50XT50B strange horizontal two lines

I think that's just the test pattern mode.

[Damtom]

Re: Panasonic Plasma TX-P50XT50B strange horizontal two lines

Tom66 horizontal thick line are still there.

When vsus was set to low I could see IR coming from service menu (white colours of letters) after changing to high , these letters are gone

[tw2005]

Re: Panasonic Plasma TX-P50XT50B strange horizontal two lines

There is option in service menu , called 'aging' . how does it work ?

that's the test patterns.

keys
[1] button...Main items Selection in forward direction
[2] button...Main items Selection in reverse direction
[3] button...Sub items Selection in forward direction
[4] button...Sub items Selection in reverse direction
[VOL] button...Value of sub items change in forward direction ( + ), in reverse direction ( - )




ALL WHITE Built-in test patterns can be
MIDDLE BLUE WITH MAGENTA OUTSIDE FRAME displayed.
MIDDLE STEP GREEN
MIDDLE STEP RED
LOW STEP WHITE
ALL BLUE
ALL GREEN
ALL RED
WHITE DIAGONAL STRIPE
RED DIAGONAL STRIPE
GREEN DIAGONAL STRIPE
BLUE DIAGONAL STRIPE
A-ZONE & B-ZONE
1% WINDOW
COLOR BAR
9 POINTS BRIGHT MEASURE
2 DOT OUTSIDE FRAME
DOUBLE FIXED 1% WINDOW
VERTICAL LINE SCROLL
ON/OFF
R/G/B/W ROTATION WITH COUNT DISPLAY
HALF FIXED ALL WHITE
ALL WHITE WITH COUNT DISPLAY

[Damtom]

Re: Panasonic Plasma TX-P50XT50B strange horizontal two lines

did you get this far minus the hrs displayed?

I have this screen but no time and count on it

[tw2005]

Re: Panasonic Plasma TX-P50XT50B strange horizontal two lines

I have this screen but no time and count on it

then have you tried using up,down,left ,right arrows to highlight that field and hold mute?

[Damtom]

Re: Panasonic Plasma TX-P50XT50B strange horizontal two lines

Oh I didn't try mute , I will check it in two hours and let you know

[Damtom]

Re: Panasonic Plasma TX-P50XT50B strange horizontal two lines

Mute doesn't work , any other ideas ?

[tw2005]

Re: Panasonic Plasma TX-P50XT50B strange horizontal two lines

Mute doesn't work , any other ideas ?

no, without the exact manual. everything i've read it's mute but maybe it's different on this one or this region. usually just hold mute for more than 3 secs and it populates,

[Shinju]

Re: Panasonic Plasma TX-P50XT50B strange horizontal two lines

Too much letter box viewing and not enough IR prevention measure taken, that screen burn in will be perminate.

I have a 2012 Samsung plasma with this exact issue i have had it for 8 months and have tried to use Full screen IR tools on and off and the letter box burn in still shows up.

its very miniscule and really only shows on white images but doesn't bother me one bit. I hung it up in the room and haven't thought twice about it since.

[Damtom]

Re: Panasonic Plasma TX-P50XT50B strange horizontal two lines

Got it in the end.