PHILIPS MAGNAVOX PLASMA - DISASSEMBLY - 26MD251 – 32MD251 – 37MD321 – 37MF331 – 42MF231 – 42MF521 – 42MF531 HOW TO REMOVE REAR LOW COVER - PDC BOARD - PANEL [PIXEL] DEFECTS

PHILIPS MAGNAVOX PLASMA - DISASSEMBLY  - 26MD251 – 32MD251 – 37MD321 – 37MF331 – 42MF231 – 42MF521 – 42MF531

HOW TO REMOVE REAR LOW COVER - PDC BOARD - PANEL [PIXEL] DEFECTS

REAR LOW COVER REMOVAL
Remove the three black screws in rear low cover.
Remove the six black screws.

PDC [Power Down Control] board removal.
[1]  Remove the four silver screws (1) remove the panel stand from the panel holder as in the arrowed direction.
[2]  Remove the four silver flat screws (2).
[3]  Remove the two black screws (3).
[4]  Remove the two silver screws (4).
[5]  Remove the panel holder from PDP.
[6]  Disconnect CN901 & CN903 from PDC board.
[7]  Remove the four silver screws (5) and remove the PDC board.

PANEL MODULE REMOVAL

[1]  Remove the 8 silver flat screws around the two panel holder (1).

[2]  Remove all aluminum foil around panel (2), after assemble the new panel, must re-fix the aluminum foil , if it is broken, change a new one, otherwise the EMI can be affected.

[3]  Remove the four silver screw around the panel corner (3).

940  Tow people must hold the panel holder 1 and 2 respectively, and then uplift the panel module and move it out from the front cover [Bezel].

PANEL [INTERNAL VIEW]

PANEL DEFECTS

A panel may have defective cells that cannot be controlled. These defective cells can be categorized into three types;

• Non-lighting cell defect: defect in which the cell is always off
• Non-extinguishing cell defect: defect in which the cell is always on.
• Flickering cell defect: defect in which the cell is flickering.

Test Pattern: Full White, Full Red, Full Green and Full Blue with 1023 (10 Bit) gray level.

The display effect specifications define the allowed limits for display cell defects  are used as the criteria in determining whether a panel should be allowed.

Item	Number of cell defects	Distance between cell defects
Non-lighting cell defect	Zone A: 3 and less Zone B: 8 and less
Non-extinguishing cell defect	Zone A: 0  Zone B: 1 and less	Regardless of A and B zone, Distance between the cells is over 15mm
Total Defect	Total number of cell defects in Zone A and B is 8 and less
Flickering cell defect	Zone A: 0  Zone B: 1 and less

DEFINITION OF PIXEL DEFECTS

Defects of Glass Filter

But, the distance between defects must be over 30mm.

Both parties shall settle any defect without prescribed contents on the specifications on deliberation.