I purchased the above referenced washer 15 months ago. For those keeping track this is exactly 3 months after the warranty expired. Right before vacation the washer would not start a load and displayed F70 followed by F71. Attempting a simple fix due to our pending departure I simply unplugged the washer for 2 to 3 minutes. After plugging back in any attempts to push the power button resulted in a beep, beep, beep. Worse, the door remained locked with clothes inside. I was able to get a repairman the next day (literally right before leaving). His diagnoses was a bad motor control board (MCU). Estimated repair was $524 for parts and $129 for labor. Having only paid $700 for the machine I declined. Besides, I wanted to do a little research on my own.
Following advice found on this forum and others I've done the following:
Confirmed power at the board
Checked continuity on the 3 blue wires
Removed the 3 blue wires and attempted to run the wash. The washer would power up, dispense a little water, pause for a minute and then display F28 (which was expected)
Based on this testing I decided to go ahead and order an MCU online since the repair seemed simple enough. It was also considerably less than $500. Today I installed the new unit. Everything is repeating all over. Same code F70, same beeps when pushing power. Any help or advice would be greatly appreciated.