Panasonic TH-50LX700MF Service Manual
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Panasonic TH-50LX700MF Service Manual

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LED TV
TH-50LX700MF
Model No.
Chassis: 1RT51MC1S2A
© Panasonic Entertainment & Communication Co.,Ltd.2022
Unauthorized copying and distribution is a violation of law.

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Summary of Contents for Panasonic TH-50LX700MF

  • Page 1 LED TV TH-50LX700MF Model No. Chassis: 1RT51MC1S2A © Panasonic Entertainment & Communication Co.,Ltd.2022 Unauthorized copying and distribution is a violation of law.

  • Page 2: Table Of Contents

    Table of Contents 1. Safety Precautions ................. 3 1.1. General Guidelines............... 3 1.2. Touch-Current Check..............3 2. Warning....................4 2.1. Prevention of Electrostatic Discharge (ESD) to Electrostatically Sensitive (ES) Devices ..........4 2.2. About lead free solder (PbF)............5 3. Specifications ..................6 4.

  • Page 3: Safety Precautions

    1 Safety Precautions 1.1 General Guidelines 1. When conducting repairs and servicing, do not attempt to modify the equipment, its parts or its materials. 2. When wiring units (with cables, flexible cables or lead wires) are supplied as repair parts and only one wire or some of the wires have been broken or disconnected, do not attempt to repair or re-wire the units.

  • Page 4: Warning

    2 Warning 2.1 Prevention of Electrostatic Discharge (ESD) to Electrostatically Sensitive (ES) Devices Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors and semiconductor [chip] components.

  • Page 5: About Lead Free Solder (Pbf)

    2.2 About lead free solder (PbF) Note: Lead is listed as (Pb) in the periodic table of elements. In the information below, Pb will refer to Lead solder, and PbF will refer to Lead Free Solder. The Lead Free Solder used in our manufacturing process and discussed below is (Sn+Ag+Cu). That is Tin (Sn), Silver (Ag) and Copper (Cu) although other types are available.

  • Page 6: Connection Terminals

    43-inch model 43-inch model TH-43LX700MF 7.2 kg (With Pedestal) 7.0 kg (TV only) 50-inch model 50-inch model TH-50LX700M TH-50LX700MF 9.9 kg (With Pedestal) 9.7 kg (TV only) 55-inch model 55-inch model TH-55LX700M TH-55LX700MF 11.7 kg (With Pedestal) 11.5 kg (TV only)
  • Page 7 13-57 (PAL D, K) 2.4~2.485GHz Digital TV DVB-T/T2 Standard Note Design and Specifications are subject to change ● without notice. Mass and Dimensions shown are approximate. For more product information, please visit EPREL: ● https://eprel.ec.europa.eu. EPREL registration number is available on https://eprel.panasonic.eu/product.

  • Page 8: Service Mode

    8) Factory Data Copy：The TV-data will be copied from tv to USB about 10s. 4.3 Software Upgrades If the firmware update is required, the latest firmware version and update procedure will be found on the website below. https://panasonic.jp/support/global/cs/tv/ (English only)

  • Page 9: Access The Hotel Menu

    4.4 Access the Hotel Menu 1) Press [MENU] of the remote control, Move the cursor on [Picture Mode - Custom]. 2) Move the cursor on [Contrast], and then Press [OK] of the remote control 6 times or Press [1-9-5-0] to enter Design Menu. 3) Move the cursor on [Hotel Menu] and press [OK] button to enter hotel menu 4) Press [>] button to turn it [ON].

  • Page 10: How To Enter Test Pattern

    a) Hotel Mode Activate: Hotel mode switch b) Channel Lock: User cannot search channel Max Vol: MAX Volume d) Auto Setting: Recovery state switch e) PIC Mode: default Picture mode SOU Mode: default Sound mode g) Power Vol: default volume h) Power Source: default source Power Channel: default channel Key Lock: User cannot use keypad...

  • Page 11: Trouble Shooting Diagram

    5. Trouble shooting Diagram Terms: √ IR: Infrared Receiver √ RC: Remote Control √ IR logic: IR blink with RC action √ LVDS: Low Voltage Differential Signal, output from processor and input for panel √ O/C: Open Cell, panel with source board √...
  • Page 12 Reference Check Point PANEL-VCC UDB2 Connection (PIN 44-PIN 51) Socket ( Below) Speaker Connector UDC1 Wi-Fi Main IC Connector EMMC FLASH IR&LED Connector Connector Tuner Source Input Terminal...
  • Page 13 Reference Check Point Rectification bridge Fuse Q201 D202 Q103 U101 U102 U201 Q102 Backlight Connector...
  • Page 14 Reference Check Point PANEL-VCC Fuse Remark: The position distribution of the Fuse and PANEL-VCC of each type of panel will be different, some are on T-CON, some on Source Board. When measuring ,find their position carefully.
  • Page 15 Reference Check Point Check Point Description Analysis Process Rectification bridge Rectification bridge 1.No Power Fuse Fuse 1.No Power U201 Backlight IC for VLED /OVP Test 3.No back light D202/Q201 MOSFET/VBL Test 3.No back light Q102/Q103 MOSFET 1.No Power U101/U102 Power IC for VBL/LLC Test 1.No Power VCC-PANEL Control 2.No Display / Black Panel...
  • Page 16 1.No power No power LED, RC or Key can not turn on TV. Power LED no light/no change. No power Fuse & Power Power Control Unit Rectification IC/MOSFET bridge, OK? Replace PB/MB in turn Check +12V for final confirmation & VBL Replace PB Replace MB...
  • Page 17 2.No Display / Black Panel Back light is OK, sound is OK, but no picture. No display When using LVDS Panel Test Pattern cable, OK? 12V OK? No symptom? When removing FFC between Replace Panel Panel and MB, Reconnect/Replace Panel VCC 12V LVDS cable Replace MB Replace MB...
  • Page 18 3.No back light Power LED logic OK, sound OK, but no picture(Different from No Display). backlight OVP when Measure the VLED Always VBL not disconnect (during power on) change Backlight connector? OVP>2.5V? Replace Panel for final confirmation Replace PB Replace Panel...
  • Page 19 4.No sound One or all signal source without sound. No sound Speakers/ Single Connection, source NG? OK ? Replace/Reconnect Check input signal Speakers in turn for and terminal final confirmation Check signal source/terminal Replace MB for in turn for final confirmation final confirmation...
  • Page 20 5.Signal source no function One or several source no function. Signal no function Single Signal Check LVDS terminal no Upgrade Software source, ok? connection function Signal Check signal source Check other settings source, ok? Change /Repair Replace MB Replace MB Signal cable Change Signal source...
  • Page 21 6. Abnormal Display OSD NG or picture NG. Abnormal Display LVDS When using cable Test Pattern , connector, No symptom ? Reconnect/Replace LVDS cable Replace MB/panel in Check other turn for final Replace MB connections confirmation...
  • Page 22 7.No tuning channels DTV or ATV no Channels No tune channels Signal Upgrading Software, setting, Change Replace MB Check TV settings setting/Tuning again Replace signal Turn again source...
  • Page 23 8. How to Rest P mode on Factory mode on(flash words) P mode on If Factory mode is ON, flashing word will be shown on the screen. How to exit Factory mode ON (= named P Appear factory mode ON), please the following procedure on the left. menu on screen PS:P mode means the factory mode is turned on.
  • Page 24 9. How to exit Aging mode Picture changing Aging mode If Green or Red or Blue or White picture is shown on the screen repeatedly, this is Aging mode. How to exit Aging Press “Menu/Input/Source” mode, please the following procedure on the left. switch on TV keypad •...

  • Page 25: Disassembly And Assembly Instructions

    6 Disassembly and Assembly instructions 6.1 Disassembly flow chart This is disassembly chart . When assembling , perform this chart conversely. Pedestal Upper Back Cover Connecting Wire Lower Back Cover VESA/Stand Support/Main/Power/T-CON Board WiFi Board IR Board Speakers LCD Panel...

  • Page 26: Disassembly Produce For Tv

    6.2 Disassembly Procedure for TV 6.2.1 Upper Back cover and Pedestals ① Remove the Upper Back Cover screws x 4. ② Remove the Pedestal screws x 4. ③ Remove the Pedestals. Remark: Place the machine on a flat, smooth table for disassembly and assembly.
  • Page 27 ④ Gently nudge the yellow part of the lower right corner of the Upper Back Cover to the right while lifting up; ⑤ Pry the hooks ( Num.1-Num.3 ) with your hand or other flat tool; ⑥ After Step.5, Upper Back cover can remove from hooks ( Num.4 - Num.6 ) easily;...
  • Page 28 6.2.2 Lower Back cover and Connecting Wire ① Remove the Lower Back cover screws x 8. ② Remove the Tapes(Yellow) . ③ Disconnect the Connecting Wire and remove them. ④ Remove the Power cable . Remark: Place the machine on a flat, smooth table for disassembly and assembly.
  • Page 29 ⑤ Please refer to the 6 reference positions (Red) and COF positions (Yellow) in the picture. ⑥ Prepare the tools as shown in Figure 2, other flat head small blades, screwdrivers can also be. ⑦ Gently insert the flat head tool into the 6 reference positions as shown in Figure 1 at a time;...
  • Page 30 6.2.3 VESA/Stand Support/Main/Power/T-CON Board ① Remove the VESA/Stand Support screws(Yellow) x 4. ② Remove the Main Board screws x 4. ③ Remove the Power Board screws x 4. ④ Remove the T-CON Board screws x 2. ⑤ Remove the VEAS/Stand Support/Main/Power/T-CON Board after remove the FFC wire.
  • Page 31 6.2.4 WiFi Board and IR Board ① Look at Figure 1 and find the location of the item. ② Gently shake the WiFi Board until it can be removed after remove the Tapes. Then remove the WiFi Board. ③ The way to disassemble IR Board is shown in Figure 2 WiFi/IR/Speaker Wire Speaker Tape...
  • Page 32 6.2.5 Speakers ① After Step 6.2.4 , please confirm the Speakers hole. ② Remove the speaker by lifting the black rubber ring with light force by hand or tool, repeating four times. WiFi/IR/Speaker Wire Speaker Tape IR Board Speaker Hole WiFi Board Figure 2: Disassemble Speakers Remark: Place the machine on a flat, smooth table for disassembly...
  • Page 33 6.2.6 Lens How to disassemble ①Gently push the lens inwards by hand while loosening the clip using a tool such as a screwdriver. ②After Step. ①, gently push your hand to the outer top, you can remove the lens. How to assemble ③Insert the lens diagonally into the slot, then gently press the clipin with a screwdriver.
  • Page 34 6.2.7 Final condition LCD panel mounted on the module Remark: Place the machine on a flat, smooth table for disassembly and assembly.

  • Page 35: Block Diagram

    7 Block Diagram AC Input PANEL_VCC DC-DC Core_1V0 DC-DC UW13 RTD2851M U410 MP2330 MP2329 I&Q U101 DC-DC 5V_STB XTAL RT710 U402 12V DC input FITI9206S IF AGC Supp S2 Tuner Clock generator IF± 27MHz SCPU_1V0 DC-DC SPI/NAND/eMMC U413 Black light UF02- MP8864 POWER SUPPLY&...

  • Page 36: Parts Location

    8 Parts Location Screws Parts Location 1...

  • Page 37: Location Of Lead Wiring

    Location of Lead Wiring Inner view of Lower Back Cover WiFi/IR/Speaker Wire Speaker Tape Speaker Hole WiFi Board VESA Support Down...
  • Page 38 Packing Structure...

  • Page 39: Exploded View And Replacement Parts List

    9 Exploded View and Replacement Parts List...

  • Page 40: Replacement Parts List

      Replacement Parts List Model No. TH-50LX700MF Change Safety Ref. No. Part No. Part Name & Description Q'ty Remarks TZZ00004420A LCD PANEL TZZ00002745A IR LENS TZZ00002924A IR Board TZZ00004422A Side AV supporter TZZ00003034A Speaker TZZ00003060A STAND L TZZ00003072A STAND R...

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