Dryer repair: why the motor of our dryer did/does not stop when ending the running program

Please make sure to click on General above and select the correct appliance type first.

*Brand: Frigidaire

*Model Number:FAQE7072LR0
*Main Symptom:motor does not stop
*What happens & when:At the end of the program time indication disappeared on the screen, then popped up the error code E51 and came the alarm beep-sound

Error Code (if any): E51
Parts or tests already tried: I want to test the motor relay RL2, but don’t know wher it is located and how it looks like
Photos / video link:

Huite,

Thank you for your question. On the main control board, located in the control panel, there will be a RL2, which will be connector J3 pin 2 and J3 pin 1. This is the location that you would check . If motor runs continuously with power applied check for short circuit across
motor relay (RL2), or L1 applied to motor relay output (J3-1) with cycle
stopped. If motor does not start when “start” key is pressed, check for open
circuit between L1 and motor relay connection (J3-2). If no wiring problems
found, replace Electronic Control Board.

Dear Team member (ED_C?),

Thank you very much for your quick help. Appreciate!

Yesterday I opened the main control board and could not find there a piece which looked like a relay, so I could not do the test J3-1 and J3-2 as you advise.

Then I was thinking where else the relay could be located. I concluded that a good chance could be somewhere near the transformer.
Today I began to search the transformer and found it quickly, above the drum on the right side, immediately below the top panel. Easy to find, easy to reach.

And yes, I saw a dark square piece right next to the transformer which could be the relay RL2.
I had heard that sometimes a relay gets stuck and that a few taps are enough to loosen it up again. So I gave that at first a try, before doing the check and it worked!
I lucky and my wife happy!

Many thanks

Frigidaire CONTROL BOARD 809160903|392x500