50 inch SAMSUNG PLASMA TV - FAILURE SYMPTOMS - Screen-shots
PN50C450B1DXZA – Samsung Plasma display – Failure Symptoms
“Y”
board failure symptoms
These
examples show Y board errors, because the Y electrodes run horizontally, errors
can often be seen across the screen. 2010 & 2011 y board errors will be
detected by the logic board and often create a High Voltage Power down [Vs On
to Off], condition.
When
failure exists on either the Y board or the Y buffer boards, be sure to replace
both assemblies. A failure on either
board can create a failure on both the assemblies.
Y
buffer board failure symptoms
X
board failure examples
In
the left screen, the sustain signal from the X board is low or missing. For 2009 models, and older; verify the
operation of the X board by disconnecting the power supply cable to the X
board. If the other boards are working
the picture will be dark. If the X board
power or the Y board power is removed, however, on 2010 or 2011 models, an
error will be detected and the Vs supply from the SMPS will be turned Off by
the logic board. A black screen as seen
on the right here will be the result.
Logic
board & logic buffer board failure examples
The
panel illuminated, but displays with incorrect noisy video.
The
panel illuminated, display is normal, except for area of Logic Buffer Board
failure
X
board & Main board failure symptoms
If
the Ve initialize signal is low or missing creating image retention. No Erasing.
Troubleshoot the X board by verifying that the Ve voltage is correct
with the label on the panel.
The
main board errors are similar to logic errors but the problem can be on a
single source such as tuner. If the Menu
also shows the defect the main board is suspected.
Boards_Location
