LG oven LRE3091ST won't heat

[Damnitdave5000]

I have an lg oven model: 3091ST that won't heat up in bake mode properly,  stops at 150 f. Got f11 error code.  Did done trouble shooting,  replaced oven sensor, thermostat, bake element bake relay. I can do circuit board repairs, in not buying a 175 dollar board when i can repair it with a 5 dollar part. Have you got any suggestions? I double checked the error code and now in getting: us-0 0907, but of course lg won't tell me what this code means,  they want me to buy a new oven. 
 

[Lighthouse]

Should be a tech sheet on back of range. 

Are broil & bake element good. 

Tech sheet will tell you to test the bake & broil elements as well as the sensor, which you say you changed. How is the wiring to these?

May have to do a live voltage test to make sure you are getting proper voltage to the elements.

[Daniel Rufledt]

Did you figure what is wrong with this range?

[Appliance Station LLC]

I just did work to a control board that was doing the same thing on the same model. There are 2 big relays on the board, next to each other, a black wire feeds into one and a red wire feeds into the other. Right beside those 2 is a smaller rectangular relay with 6 legs. The numbers on the relay are 888HN-1AC-F-C 12v=DC then below those numbers you got 17A 250V - T105. Replaced that just 20 minutes ago and I got a range that comes to temp again and quick. It took like 30 minutes for it to get up in the mid 100s and there was alot of clicking coming from the board. That relay was the culprit.