After a power outage, the oven control light keeps flashing.

Strange it won't turn back on. Did you see it working when you purchased it secondhand?

It appears you just need to reset. Turn off at the breaker for 2 minutes, then back on and try this.

SOLVED: Our GE Profile JTP18 keeps flashing "door loc

Fixya https://www.fixya.com > support > t200245-our_ge_p...
6 answers
If the oven is flashing "LOCKED DOOR" on the display. even though the door is open, the fix is easy and there is no need for repair. Press and hold the oven ...

https://products.geappliances.com/appliance/gea-support-search-content?contentId=16196

lots more here

https://www.google.com/search?q=GE+jtp15+wall+oven+locked+door+flashing%2C+4%3A00+flashing

..

File a claim with your locale utility

No I think the power surge has destroyed the main control board.

Tom Sh, you own every kind of appliance, or you are attempting to be a repairman with free advice from Fixya?
Replace the touchpad. Help Me Find My Model Number RepairClinic com

Are you sure that you have 220 volts to the oven. It is possible for a breaker to go bad and conduct power only on one leg and some things on the appliance will still work.
Electronic controls on ovens can be damaged by power surges caused by lightening strikes. That could be the problem but after looking at the circuit diagram of the panel it doesn't look like there are electronics that should be damaged by a surge.
Here is a link to the user manual.
Download Manual Pdf

Link to Maytag Same as Whirlpool
Search Results for Appliance Models matching CWE4800A

Good Luck.

First and foremost check the breaker box. Ovens use 240 volts which is a double breaker in the box. Just to be safe I would click both breakers off and then back on together. If this doesnt work turn off the power and have someone help you pull the oven out and check your plug or connection. You may be dealing with a broken wire in the junction box due to the power outage. If you have a volt meter turn the power on SAFETLY and test if your getting 240 volts. If the connections are good (including the one from the juction box to the stove itself) and you are getting proper votage, unfortunatley you are going to have to get a new control. What happens is with only 120 volts going to the oven everything runs but your elements (they utilize the 240 volts to heat). You can tell time or use the timer but without your full 240 your turkey aint gonna cook. There is 120 volts coming coming from each of those breakers you checked in the garage. Bottom line is the chances of both elements going out at the same time are slim to none and I feel you are probably dealing with a broken wire.

After calling an authorized technician and the thermador support line, neither of which solved my problem, i was told a HARD RESET of the PROBE is all that is required. This problem originally occurred on my Thermador double oven after a power outage and rendered my oven unusable b/c the probe light would not go off -- even though i had never used the probe!

To hard reset the PROBE, turn off the oven at the breaker box, plug in the probe for 1 minute and remove it, then turn the power back on at breaker box, and probe light goes off!! Also, since i didn't have the original probe and to buy a new one would be $80, I borrowed a friend's Thermador probe (different model but it still worked). It cost me $85 for the service visit, 2 weeks of nonoperational oven, and about 5 hours time -- hence the reason i am making this post. It is a golden trick!!

What did NOT work -- turning off power to house again for 15 minutes to reset the OVEN, and disconnecting the probe wires from control panel so probe isn't recognized.

Turn the breaker off for 5 minutes. this will reset the system. If you still have no power then it spiked your control board and it's the board that is fried.
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We had a quick power outage and when the power came back on it locked our older (1991) Kenmore electric oven model # 40889 / 40881. Went throought the manuel and nothing pertains to this problem. We have turned off the circuit breaker and turned back on, but nothing seems to unlock the door. Any suggestions would be GREAT!!!!!!!

iodine, open the upper oven, look thru the grill below the control panel on the right side and there is your model number. The issue here is that when the power came back on the oven run thru a test and your lower lock motor has failed. It will need to be replaced. Yes the only way to stop this is to shut off the breaker.