Samsung PN43D450 Schematic

SERVICE BULLETIN

PRODUCT: PDP

BULLETIN NUMBER: ASC20110506002

BULLETIN DATE: May 6, 2011

MODELS:

PN43D440A5D,

PN43D450A2D,

PN43D490A1D

SUBJECT: Preventing the failure or repeated failure of the X Main board

SYMPTOM: No “power on” or “no picture”

REPAIR: Check the production range of the PDP. If it was manufactured in January or February of

2011 and the X main board has failed, restore the PDP to full operation, and then verify that the

firmware on the main board is at/above the version listed in the chart. If not, upgrade the firmware.

Model Firmware version

PN43D440A1D 1006.6

PN43D450B1D 1006.6

PN43D490A1D 1013.8

Note: When servicing a Samsung TV, always check that the latest

firmware is applied before completing the repair.

PROCEDURE: Troubleshoot to determine the cause of the failure. Restore the PDP to full

operation, and then, regardless of whether the symptom is caused by a defective X main or other

board (or NDF), upgrade the firmware to the version listed above (or to the latest, whichever is the

higher version) to prevent possible (repeat) failure of the X main board.

Note:

Consult the Samsung Service Website at (service.samsungportal.com) for the Service Manual

and other information on this product.

This information is published for experienced repair technicians only and is not intended for use by the public. It does not contain

warnings to advise non-technical individuals of possible dangers in attempting to service a product. Only experienced professional

technicians should repair products powered by electricity. Any attempt to service or repair the product or products dealt with in this

information by anyone else could result in serious injury or death. Information provided in this bulletin is subject to change or update

without notice.