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Confidential
For Authorised Service Agents Only Ref No: MQMSH0011DG151214REV1
SERVICE HINT
A BG CY E FL I LT MD NL S TR Date
AL BIH CZ EST GB IRL LV MK P SK UA 15/12/2014
AND BY D F GR IS M MNE PL SLO Country Reported
B CH DK FIN H L MC N RO SRB Europe
Product Category: LCD IDTV / LCD TV
Subject: SOS one flash
Model(s) Affected: TX-47/55/60AS802B TX-47ASW804
TX-47/55/60AS800E TX-60ASR800
TX-47/55/60AS800T
Symptom / The set does not power up, and the LED gives a SOS 1 flash indication.
There is a possibility that the issue may be due to a problem with the LCD panel, causing the
Cause:
set to shut down into a protective mode.
Remedy / This Service Hint applies to serial numbers prior to: N*-444****
Method:
If, after following the troubleshooting information given in the Service Manual to exclude other possible
causes, it is determine the panel is faulty, order and replace the LCD panel.
Troubleshooting hints/tips:
1. The customer reports that the set has randomly "no operation, and the red LED is blinking".
2. The TV works normally, however there is a record of protection mode SOS1 in the service menu.
(See Fig. 1 for an example)
3. The TV is in protection mode with SOS 1 flash.
For test purposes only, to confirm if the symptom is caused by a problem with the panel it is possible to
disable this particular protection mode:
i. Solder a temporary link between pin 2 and pin 3 of Q7716 on the LD-PCB (see Fig. 2).
ii. Power on the set and, using a white test pattern, a dark horizontal stripe will be seen
(See Fig. 3 for an example of the phenomenon)
Note: Remember to remove the temporary link *before* continuing with the repair.
Replacement Part Numbers:
Screen Size Part Number
47 Inch L5EDDYY00598
55 Inch L5EDDYY00600
60 Inch L5EDDYY00604
Fig. 1
Fig. 2 Fig. 3
Document No: MQM_SH
Panasonic 1 of 1 Rev: 2.00 DG140612