2. Content  1 Component  2 repair instruction  3 How to define problem  4 How to repair  5 How to disassemble  6 PC part  7 Button and Ports

3. 1.1\Component LED driver board Power board 182VG2.0 mother board PC power on button and touch pinboard PC touch screen external connection pinboard 60HZLEDscreen

4. 1.2\ 6M48V2.0 Port Power port Back light port Button port Remote control port LVDS port Audio port USB HDMI1 HDMI2 VGA Audio input

5. 1.3\182VG2.0 Port Power port Audio output USB HDMI x 3 VGA 音频输入 Button port LVDS port Back light control Remote control port

6. 2 repair instruction Precaution Make sure panel is shut down and power is cut. Non-professional can not do repair This manual is suit to panel model (black) Tools Screwdriver Multimeter PC/laptop tweezers

7. 2 repair instruction Part can be replaced TV TV power board TV mother board Speakers LVDS cable Cables Button board Remote control receiver board Touch screen pinboard LED driver board Touch screen PC Memory card Hard disk Mother board CPU Fan PC power Cables Touch/button pinboard

8. 3/How to define problem  Problem1 ： panel can not power on 1)Check if power indicator is RED after power connects and power button is on. 2)When indicator is RED, use remote control to power on panel, if can power on, the power on/off button is fault. If remote control can not power on panel, to update TV mother board software. If update fail, to replace TV mother board. 3)When power indicator is not light take off back cover of panel Check electric of power switch button and power board, use multimeter to test if power output is good under 5V/12V/24V. If there is no power, replace power board and check if panel works 4)When power indicator is not light and there is power from power board. to check the connection between power board and TV mother board to check TV mother board power port, if there is power If there is power from TV mother board power port, to replace TV mother board

9. 3/How to define problem Connect power and check power indicator is light Power on? Test End Replace power switch or power board Power on? Check connections between power board and TV mother board Indicator is RED or Blue, but screen can not light on Update TV mother board by software Replace TV mother board Contact with supplier

10. 3/How to define problem  Problem2: Screen Blurred 1)Adjust TV software specs in factory mode (10 BIT or TIB) 2)If fail, to update TV mother board software 3)If not work, disassemble panel and check LVDS cable connection. 4)If LVDS cable connects good, to replace TV mother board 5)If screen still blurred after above steps, check if the screen is 120HZ. If so, replace pinboard of 120HZ screen or update software.

11. 3/How to define problem Adjust software specs Display ok test Update TV mother board software Replace TV mother board Check LVDS connection or replace Display ok replace pin board of 120HZ screen or update software end Contact supplier

12. 3/How to define problem  Problem3: No signal 1)Check PC power indicator is YELLOW 2)If so, check resource setting is correct 3)If still no signal, check cable between PC and TV 4)Connect with external PC, if there is signal, PC has problem 5)When PC connects with TV by HDMI, replace it by VGA (to judge if port is wrong or connection not good) 6)If still no signal, take out the PC box and check memory card loose or dusty. 7)Replace memory card and check, if fail, replace PC mother board.

13. 3/How to define problem PC power indicator is YELLOW Set signal resource Signal ok test Check power connection Check PC if fan works Replace memory card or clean it Replace PC mother board Connect with other PC, no signal Replace TV mother board signal port Replace PC power Signal ok end Check PC button and flat cable Replace CPU

14. 3/How to define problem  Problem 4: screen can not display 1)When power on, after LOGO shows screen can not display TV program damages, to update TV board. If not work, replace TV board If still not display, take off panel cover and check back light cable connection 2)Screen can not display when power on check power indicator is light If power indicator do not light, it is problem 1

15. 3/How to define problem Screen can not display Display is ok Replace TV board Check connection of back light cable Organize back light cable and LVDS Update TV software Display is ok testend Contact supplier

16. 3/How to define problem  Problem 5 ： NO sound 1)Check if there is audio output from PC 2)If there is audio output from PC, check connection between PC and TV 3)If connection good, take off back cover of panel, test speaker by multimeter and check connections. Replace speaker when it is faulty. 4)If still on sound after above steps. To replace TV mother board or replace amplifier IC(TDA7491LP) on TV mother board.

17. 3/How to define problem Check audio output from PC Check speakers Check connections Check sound driver Check sound setting Replace TV mother board Check sound Replace speakers Replace PC mother board Check audio output end test

18. 4/Touch part repair 1. Touch part structure PCB with USB cable Flat cable flat cable These PCB marked different number, there are different numbers on different size panel Black PCB is receiver, white PCB is sender. MCU is sender No.1. the position must be correct when repair

19. 4/Touch part repair 2. How to define problem  Problem 1: can not touch 1)Connect panel with external PC, test by Checktool If Checktool can not work, take off back cover and check USB port connection. If connection is good, take off touch screen and check touch port. Firstly, to see USB touch cable welding is good or not. 2)When welding is good, replace a good MCU and test. 3)If still not work after MCU replaced, to check PCB one by one.

20. 4/Touch part repair Connect panel with external PC Check flat cable, USB cable welding is good Replace MCU Touch is good end Check PCB one by one Replace faulty PCB Check connection between Pinboard and PC Replace USB port on PC board Replace cable or pinboard Touch is good Contact supplier

21. 4/Touch part repair  Problem 2: Touch is not smooth 1)Connect panel with external PC, check infrared part by Checktool. ( see picture next page) 2)For example, if tube 1-14 on No.2 PCB is faulty in picture next page Find No.2 PCB from receiver or sender by multimeter, and then replace. Or directly replace No. 2 PCB from receiver or sender, and check AD by checktool.

22. 4/Touch part repair Fault is No.2 PCB Infrared tube number AD is 0, wrong number, so it is red Wrong AD

23. 4/Touch part repair Checktool interface in English

24. 5/How to disassemble  Take off all external connection cables and wall mount bracket  Take off back cover to check board, connections  If there is problem from touch part Disconnect USB cable, button flat cable, control flat cable,etc Take out fix part around four sides, see picture next pages Take screen and glass to avoid dust Replace touch part

25. 5/How to disassemble The part fix screen and glass

26. 5/How to disassemble Take out the screws Take out all screws around frame and take off screen and glass, put them together carefully to safe place

27. 5/How to disassemble Touch frame Connect this part with PC, use Checktool to test and replace PCB

28. 6/PC part PC power Hard disk Touch button connect board memory PC mother board fan

29. 7/Button and Ports 1.PC power on 2.TV power on 3. source 4.menu Volume adjust Channel adjust USB Touch HDMI port Audio input Power switch VGA port TV power lightPC power light Power on, Light is red, light is blue when press TV button later Light is yellow when press PC button