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Confidential
For Authorised Service Agents Only Ref No: MQM0086DG250412REV1
TECHNICAL INFORMATION
A BG CY E FL I LT MD NL S TR Date
AL BIH CZ EST GB IRL LV MK P SK UA 25/04/2012
AND BY D F GR IS M MNE PL SLO Country Reported
B CH DK FIN H L MC N RO SRB Germany
Product Category: LCD IDTV
Subject: Backlight/panel failure
Model(s) Affected: TX-L42E5B TX-L42EW5
TX-L42E5E TX-L42EW5S
TX-L42E5Y
Symptom / Under certain viewing conditions, the panel/backlight fails but audio is still output.
There will be no backlight, no picture, and there may be a whistle from the LD PCB
Cause:
Remedy / This modification applies to all units prior to: N*-2240001
Method: Step 1: Replace the LD PCB (Part No: LD-42E5)
Step 2: Upgrade the PEAKS EEPROM
Step 1: Replace the LD PCB
1. Release the 3 connectors on the
LD PCB, and remove the cables.
2. Remove the 4 screws holding the
LD PCB.
3. Fit the replacement LD PCB.
4. Replace the screws.
5. Re-connect the cables.
Fig. 1: Rear of set
Fig. 2: LD PCB
Step 2: Upgrade the PEAKS EEPROM
Obtain the PEAKS EEPROM upgrade files from your usual service source.
1. Uncompress the file.
2. Copy the folders, folder contents and files shown in Fig. 3 to the root directory of an SD card.
3. Turn on the TV and wait for the default screen to appear.
4. Insert the SD card into the SD card slot.
5. Follow the on-screen instructions to upgrade the PEAKS EEPROM software.
Fig. 3
Warranty Claims - Please use the following IRIS and Activity codes
Activity Codes: Guarantee Status Repair Type Location Source
(UK Only) A R W D
Symptom Section Defect
Condition Repair
IRIS Codes: Area Type Code Area Code Area Code
1 3 1 315 3 VPD 2 N i
Note: Failure to use the correct IRIS and Activity codes may result in the claim being rejected
Document No: MQM_TI
Panasonic 1 of 1 Rev: 11.00 DG020410