Description
For sale used and very good condition 1-881-636-31 MAINBOARD KDL-40EX700. Functional Test and quality inspected before shipped. This was removed from broken TV screen. Contact seller if you have any questions. We are Electronics and Computer Repair shop for more than 20 years. Note: We have found many times a product may be suspected to be defective or broken or an item tobe not as described when theactual reasonthat the component is not working for them is because it is notcompatible with the unit or notanexactmatch for the part they are replacing. Please double check the model number of the TV. These are the following reason why the parts are not working. Not compatible, wrong parts or Revision, Poor or bad installation, Wrong Diagnose. If you are trying to do trial and error for the parts you are putting? You will accept the risk of putting the parts which might be good or bad. All this issue is not refundable. Very Important Note: 1. If you are returning the part. You need to provide us all your voltage measurement input and output, proper troubleshooting the problem (on video), signal analysis for any equipment you are using. Without this, we will not issue a refund? 2. The part you are buying is also a part of the whole section of TV. If your other part is defective. The part you are buying will not work. In this case we will not accept RETURN. 3. The part you are buying must be replaced by certified or professional electronics technician. Who has knowledge to read schematic diagram, measuring voltage and current, calibration, downloading and uploading the software of the TV, adjustment on the voltage and current if necessary, and know how to do final test of the TV using manufacturer code. 4. The defective part you have must be match of all the problem stated below Power Board or Power supply 1. Input fuse is bad , No output of 5 volts or 3.5 volts supplying to main board, No 12 volts, 16 volts or 24 volts return, No high voltage from secondary, Overloading current, bad power controller, bad temperature controller, Burn components on the board. Main Controller Board 1. No return voltage 5 v or 12 v to power supply, no output voltage going to T-con, No response on remote, No controller Power volume or channel, no controller on LCD inverter , y board , x board and controller board, bad graphics display, no HDMI output or video, intermittent power issue, no response on remote, no sound, no network. T-Con 1. Bad Fuse, No output signal voltage 1.3- 18 volts going to buffer, white screen, bad cluster picture, half screen is bad, bad image. Y X Z Boards 1. Shorted Line on VA, VC, VS, No output voltage, Trip the power supply, No image on the panel, keep blowing the fuse, keep resetting the relay of power supply, burn board. Other not mentioned on the above, professional technician must be identified the problem and the root of the problem. We offer free technical support and help with installation questions.
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