My microwave has power but it appears to be locked up. Any ideas?

Probably L for Child Lock.

Page 9

http://techsupport.pdxrvwholesale.com/wp-content/uploads/2018/12/Dometic-Microwave-Owners-Guide-Model-DMW.pdf

and also

A small "L" may appear in the corner of the display as a reminder that the control panel is locked. If anyone tries to use the microwave, the display will show "LOCK".

Microwave - Explanation of the Child Lock Out Feature

GE Appliances https://products.geappliances.com > appliance > gea-supp...
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If your GE Spacemaker XL 1400 microwave oven is not turning on, there are a few things you can do to diagnose the problem and try to remedy it. First, unplug the microwave oven and plug it back in again to supply power back to the oven after a power surge. Second, make sure the door is firmly shut as the oven does not operate unless the door is completely closed. Third, check the breaker box to make sure the switch associated with your microwave oven is not flipped to the "Off" position. Finally, press and hold the "Clear/Off" button on the front panel if the "Locked" message appears on the display. If none of these steps work, then the problem could be anything from a defective control circuit board or a burned out magnetron tube. Either fix is quite expensive and you'll have to evaluate the cost of repair versus the cost of replacing the microwave oven.

L is for locked.

https://www.samsung.com/in/support/home-appliances/using-the-child-lock-features-in-samsung-microwave-oven/

"Built in" microwave ovens I've come across are all hung from the top of the oven, so you'll have to get above it to drop it out with help in all likelihood. Yours sounds like it may have a faulty connection to power either internally or at the plug. Dont use it like that. You will either destroy it or maybe even cause a fire.

If you wish to get some details about microwave oven repair; check the site linked here. Pull up older posts.
http://electro-medical.blogspot.com/

Easiest thing to do is to unplug it or turn off power at breaker for a couple of minutes, should reset.

Got you covered. Here you go:

Microwave - Explanation of the Child Lock Out Feature
Many microwave control panels can be locked to prevent accidental use or access by children.
There are two different ways to lock the control panel:
1. Press and hold the CLEAR/OFF pad for 3 seconds. The display will show "LOCK" and then revert to the time of day.
A small "L" will appear in the corner of the display as a reminder that the control panel is locked. If anyone tries to use the microwave, the display will show "LOCK".
2. On some models, press and hold the 5 and 7 pads simultaneously for 3 seconds.
To unlock the control: Repeat the procedure which was used to lock the control. (Press and hold the CLEAR/OFF pad for about 3 seconds or hold the 5 and 7 pad simultaneously for 3 seconds.)
Microwave - Explanation of the Child Lock Out Feature

Many microwave control panels can be locked to prevent accidental use or access by children.

There are two different ways to lock the control panel:

1. Press and hold the CLEAR/OFF pad for 3 seconds. The display will show "LOCK" and then revert to the time of day.
A small "L" will appear in the corner of the display as a reminder that the control panel is locked. If anyone tries to use the microwave, the display will show "LOCK".


2. On some models, press and hold the 5 and 7 pads simultaneously for 3 seconds.


To unlock the control: Repeat the procedure which was used to lock the control. (Press and hold the CLEAR/OFF pad for about 3 seconds or hold the 5 and 7 pad simultaneously for 3 seconds.)
That info is from GE

Hope that does the trick.
Regards, Farmerbear at FixYa.com






























Microwave - Explanation of the Child Lock Out Feature

Many microwave control panels can be locked to prevent accidental use or access by children.

There are two different ways to lock the control panel:

1. Press and hold the CLEAR/OFF pad for 3 seconds. The display will show "LOCK" and then revert to the time of day.
A small "L" will appear in the corner of the display as a reminder that the control panel is locked. If anyone tries to use the microwave, the display will show "LOCK".


2. On some models, press and hold the 5 and 7 pads simultaneously for 3 seconds.


To unlock the control: Repeat the procedure which was used to lock the control. (Press and hold the CLEAR/OFF pad for about 3 seconds or hold the 5 and 7 pad simultaneously for 3 seconds.)
Microwave - Explanation of the Child Lock Out Feature

Many microwave control panels can be locked to prevent accidental use or access by children.

There are two different ways to lock the control panel:

1. Press and hold the CLEAR/OFF pad for 3 seconds. The display will show "LOCK" and then revert to the time of day.
A small "L" will appear in the corner of the display as a reminder that the control panel is locked. If anyone tries to use the microwave, the display will show "LOCK".


2. On some models, press and hold the 5 and 7 pads simultaneously for 3 seconds.


To unlock the control: Repeat the procedure which was used to lock the control. (Press and hold the CLEAR/OFF pad for about 3 seconds or hold the 5 and 7 pad simultaneously for 3 seconds.)

sounds like the cooling fan has came adrift or stopped working , this will cause the magnatron ( the microwave generator ) to overheat tripping the over temperature stat ,so fix the cooling , but be sooooooooooooo carefull in there , microwaves + really high voltages , not really a job for a non electrician/microwave tech

Ck and make sure the circuit breaker on the power panel on the house hasn't tripped.. If your microwave is within 6' of the kitchen sink, ck for a tripped GFCI controlling the power the microwave is plugged into. Good Luck, Ned

According to the owner's manual for model KHMS155L:

To Lock/Unlock Control: The microwave oven and Timer must
be off. Touch and hold START for 5 seconds until 2 tones sound and a lock icon appears on the display. Repeat to unlock and remove the lock icon from display.

You can download the manual here:
http://www.kitchenaid.com/custserv/service.jsp

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