Kfwe50a1 will not start, green light comes on and then flashes red 6 times

Hi Keith,

6 flashes of the led light is an error code and the unit will not fire-up unless isolated the faulty parts.
To confirm if it is the real fault, unplug the unit from the outlet for 15 minutes and then plug it back in and check if the symptoms still persist.
Your unit has a self diagnostic screen that can be access by pressing in rapid sequence "Display", "Channel 5", "Volume (-)", "Power" on the remote control while the unit is in standby mode or the led light stops from blinking.

Self diagnostic screen will be display. Error code will be display together with numerical "0" means no fault detected and "1" means fault detected.
You will see "6 : LOWB with a numerical "1" on the screen, this is an error code for 6 flashes of the led light.

After you've confirmed that the the error code is "6 blinks/ LOWB error code", then the G1 board (Power supply board) is faulty. LOWB error code means that there's a malfunction on the 6Volts output of the G1 board.

To isolate the fault on the G1 board, you must have a skills on electronics troubleshooting, soldering and desoldering parts on the board, have necessary tools and test instrument. If you can't troubleshoot the unit yourself, don't worry, there's a DIY solution so that you can save money for the service fee of a TV technician. You may replaced the entire G1 board(part no. A-1087-323-A), this is more convenient if you are going to do-it-yourself because no troubleshooting and soldering required. I would advice you to obtain the board from your nearest Sony service center because this board is currently not available online.

Please let me know if you need further assistance.
Ratings and feedback is highly appreciated.

Hope I helped you.
Have a nice day!
Thanks for using Fixya.