Chosen Solution

Raspberry11 we need your help to help you. We need to know what exact make and model number your TV is. Then we need to know where you use the hair dryer to turn it on. We furthermore need to know if you checked all the input sources. Also, let us know which board the technician refers to. This looks like a bad main board. If you still have the back cover off, take some good pictures of all the boards. Post those with your QUESTION. Use this guide for that Adding images to an existing question Update (12/04/2022) The 5 blink error code can have quite a few different causes. Ranging from the T-con board to a bad panel and a few things in between. In your case, this maybe difficult, but you did not say if you ever see a normla screen, even just partial. If you have the original TV remote then try to see if this will work on your set:

  1. In standby mode, press the following buttons on the Sony remote: DISPLAY….5….VOL(-)….TV POWER
  2. On the left side are the blink codes. On the right hand side is the error count.
  3. Under 005, you’ll see three listings… TCON, HFR, and P-ID (panel).
  4. Let us know what errors your set shows. If that does not work on your set, then you will have to remove the back of your TV and check the boards. Try to rule out/in the T-con board as faulty. Disconnect the LVDS cable to the T-CON board, the cable between the Main board and the T-CON board, and see if the error code will change. Let us know what the result is. You could go ahead and repalce teh T-con board and then update the firmware which is needed for the Sony after replacement of the board. Using a hair dryer means that one or more components may have cold solder or are otherwise damaged. Where do you warm up your TV matters for us to know. Eventually you will have to remove the TV from the wall mount to work on it….;-)