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Samsung LS AM70 P Series Repair Manual
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Samsung LS AM70 P Series Repair Manual

Samsung LS AM70 P Series Repair Manual

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Repair Guide
Basic Model
LS32AM702PNXZA
Applicable Model
LS**AM70*P*
Ver.1.1

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Summary of Contents for Samsung LS AM70 P Series

  • Page 1 Repair Guide Basic Model LS32AM702PNXZA Applicable Model LS**AM70*P* Ver.1.1...
  • Page 2 Contents 1. Precautions 1-1. Safety Precautions ..........................1-1 1-1-1. Warnings ..........................1-1 1-1-2. Servicing the Product ......................1-1 1-1-3. Fire and Shock Hazard ......................1-1 1-1-4. Product Safety Notices ......................1-2 1-2. Servicing Precautions ........................1-3 1-2-1. General Servicing Precautions ...................1-3 1-3. Electrostatically Sensitive Devices (ESD) Precautions ..............1-4 1-4.
  • Page 3 Samsung- authorized service provider. Any damage or defect to product resulting from a repair, or an attempt to repair, the product by any person other than a Samsung certified service provider will not be covered by the warranty.
  • Page 4 Samsung’s liability in any case shall be limited to the greatest extent permitted by law. Samsung reserves the right, at its sole discretion, to change, modify, add or remove portions of any part of this manual at any time. It is your responsibility to check the manual periodically for changes. Your use of the manual...
  • Page 5 Precautions 1. Precautions 1-1. Safety Precautions • Follow these safety, servicing and ESD precautions to prevent damage and to protect against potential hazards such as electrical shock. 1-1-1. Warnings For continued safety, do not attempt to modify the circuit board. Disconnect the AC power and DC power jack before servicing.
  • Page 6 Precautions 6. Observe the original lead dress, especially near the following areas: Antenna wiring, sharp edges, and especially the AC and high voltage power supplies. Always inspect for pinched, out-of-place, or frayed wiring. Do not change the spacing between components and the printed circuit board. Check the AC power cord for damage. Make sure that no wires or components touch thermally hot parts.
  • Page 7 Following the repair by a non-authorised service provider, self-repair or non-professional repair of the product, Samsung is not liable for any damage to the product, any injury or any other product safety issue caused by any attempt to repair the product which does not carefully follow these repair and maintenance instructions.
  • Page 8 Precautions 1-3. Electrostatically Sensitive Devices (ESD) Precautions Some semiconductor (solid state) devices can be easily damaged by static electricity. Such components are commonly called Electrostatically Sensitive Devices (ESD). Examples of typical ESD are integrated circuits and some field-effect transistors. The following techniques will reduce the incidence of component damage caused by static electricity.
  • Page 9 Precautions 1-4. Installation Precautions 1. For safety reasons, more than a people are required for carrying the product. 2. Keep the power cord away from any heat emitting devices, as a melted covering may cause fire or electric shock. 3. Do not place the product in areas with poor ventilation such as a bookshelf or closet. The increased internal temperature may cause fire.
  • Page 10 This section of the service manual describes the disassembly and reassembly procedures for the Product. 1. Disconnect the Product from the power source before disassembly. 2. Follow these directions carefully. - Use the Samsung Open Jig and Cushion to remove the Rear Cover. • Open Jig Tool, Protection Cushion (curved models Only) CAUTION - Recommended Torque for Cabinet/Stand screws : 10 ~ 12kgf •...
  • Page 11 Disassembly and Reassemble • Release two SCREW (6003-001907) , Disassemble the stand and the body. (32”) Remark 6003-001907 (M4xL14) • Lift the stand and disassemble it completely. (32”) Remark • Complete. (32”) Remark...
  • Page 12 Disassembly and Reassemble • Disconnect the AC power cord and all cables, and place the monitor on the cushion. (43”) Remark • Release two SCREW (6003-001907) , Disassemble the stand and the body. (43”) Remark 6003-001907 (M4xL14) • Complete. (43”) Remark...
  • Page 13 Disassembly and Reassemble 2-2. Cover Rear Disassembly • Put Open jig in the marked position of the picture. (32”) Remark BN81-14946B (Open Jig) • Enter and lift the Open jig in the indicated position, and secure space. (32”) Remark BN81-14946B (Open Jig)
  • Page 14 Disassembly and Reassemble • Be careful not to damage the panel. (32”) Insert the OPEN JIG in the position where the triangle mark is located. Remark You should not cross the bottom of the panel with OPEN JIG. • Lift the Locking Point using the Open Jig along the arrow direction of the figure. (32”) Remark BN81-14946B (Open Jig)
  • Page 15 Disassembly and Reassemble • Remove the COVER REAR by lifting the top. (32”) Remark • Decomposition complete. (32”) Remark...
  • Page 16 Disassembly and Reassemble • Put Open jig in the marked position of the picture. (43”) Remark BN81-14946B (Open Jig) • Be careful not to damage the panel. (43”) Insert the OPEN JIG in the position where the triangle mark is located. Remark You should not cross the bottom of the panel with OPEN JIG.
  • Page 17 Disassembly and Reassemble • Decompose the cover hook along the arrow direction. (43”) Remark BN81-14946B (Open Jig) • Lift the top to remove the coverage. (43”) Remark • Decomposition complete. (43”) Remark...
  • Page 18 Disassembly and Reassemble 2-3. Bracket-Stand Link Top & Bracket-Stand Link Disassembly (32”) • Remove the screw and lift the bracket. Remark ※ When reassembling the monitor, screw assembly is required. • Release one SCREW (6001-003016) and separate the BRACKET-STAND LINK. Remark 6001-003016 (M3xL5)
  • Page 19 Disassembly and Reassemble • Release one SCREW (6001-003016) and separate the BRACKET-STAND LINK TOP. Remark 6001-003016 (M3xL5) 2-4. Assy Speaker Disassembly • Lift the two ASSY SPEAKERs and separate them. (32”) Remark • Lift the two ASSY SPEAKERs and separate them. (43”) Remark 2-10...
  • Page 20 Disassembly and Reassemble 2-5. SMPS PCB Disassembly • Please check below before removing SMPS board. - As shown below, discharge SMPS using Samsung discharge equipment to each capacitor. Remark - In LED On state, discharge is completed when switching to OFF state.
  • Page 21 Disassembly and Reassemble • After checking the capacitor discharge, 1) Remove all cables. 2) Remove one screw. Remark 3) Gently lift the upper right corner of the board and push it down to remove the board. * Note: When installing the SMPS board, make sure that it is installed correctly in the mounting slot.
  • Page 22 Disassembly and Reassemble • Before Removing SMPS board - You have to first discharge the SMPS by using the Samsung Discharge Tool across each large capacitor. - If LED ON → LED OFF, Discharge is completed. - Check with Multi Meter across each capacitor leads to verify less than 10 Volts remains.
  • Page 23 Disassembly and Reassemble 2-6. Main PCB Disassembly • Decompose all connected cables before disassembly of Main PCB. (32”) Remark • Hold the board with both hands, and push it to the left to remove the board. (32”) * Note: When installing the mainboard, correct in the mounting slot Please check if it is Remark installed.
  • Page 24 Disassembly and Reassemble • Please remove all connected cables from board. (43”) Remark • Hold the board with both hands and lift it gently. (43”) Remark - Slide down to remove the board. 2-15...
  • Page 25 Disassembly and Reassemble 2-7. Function unit Disassembly • Please remove the cable connected to the Tcon panel. (32”) Remark • Grab the fixed plastic module and gently lift it up and remove it. (32”) Remark • Decomposition complete. (32”) Remark 2-16...
  • Page 26 Disassembly and Reassemble • Please remove the cable connected to the source board. (43”) Remark • Grab the fixed plastic module and gently lift it up and remove it. (43”) Remark • Decomposition complete. (43”) Remark • Reassembly procedures are in the reverse order of disassembly procedures. •...
  • Page 27 Troubleshooting 3. Troubleshooting 3-1. After Replacing Main Board ■ Setting TV into Factory Mode Samsung IR Remote (Limited Operation) 1. TV On 2. Press as follows. • Remote Button Info Factory AA81-00243B First Screen Appearing in Factory Mode Important Screen info: T-NKLAKUC-XXXX.XX...
  • Page 28 Troubleshooting MAIN : Option, MODE : SATELLITE, RES : NOSIGNAL Home Updates Exit Type 65Y6AU0SA Local Set SW MODEL UAU8000 Front Color AU8000B-U65AB1 SAMPLE Writing Fornt Color ■ Replacing Main Board When replacing Main Board, certain values needs to be manually input in Factory menu to complete the replacement. Steps to Replace Main Board (Example) 1.
  • Page 29 Troubleshooting ② Local Set : Set according to Local region(country) ③ SW Model : Check Label Rating of the TV(located on the Rear Cover) - SW Model is digits after “/” in Version No. Choose same SW Model code from the list. Home Updates Exit...
  • Page 30 Troubleshooting ④ Front Color :Check Label Rating of the TV Home Updates Exit Factory Reset Type 65Y6AU0SA Writing Type Local Set SW Model UAU8000 Front Color AU8000B-U65AB1 Writing Fornt Color Model Code UN65AU8000FXZA TUNER Ch Table NONE * Reference to Front Color list in the Factory Menu <"Front Color"...
  • Page 31 Troubleshooting ⑤ Model code :Check Label Rating of the TV Home Updates Exit Factory Reset SAMPLE Type 65Y6AU0SA Writing Type Local Set SW Model UAU8000 Front Color AU8000B-U65AB1 Writing Front Color Model Code UN65AU8000FXZA <Model Code digits exceeded > <Set Model Code> (over 19 digits)
  • Page 32 Troubleshooting ■ SVC - S/N - Writing S/N <Writing S/N : Check Label Rating of the TV > SAMPLE...

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