I changed my door hinge on my leisure cookmaster CM19FRC & now can’t screw it back on, it seems to have lost the rivets built in on the inside

The hinges mount inside the oven door, open the door all the way, then move the small clips that are riveted to the hinge to the position opposite of where they sit now... this will hold the hinge springs open. Lift up the door as if to close it, then the hinges will lift out of their slots and you can remove the door... Electrolux Range Stove Oven Door Hinge 318244305

accessed from the back

1.Unplug the microwave and set it on a table or workbench. If you have a built-in microwave, you may have to remove some mounting screws or retention clips to get the microwave out of the support bracket. Open the door and take out the glass tray.

2.Pry off a corner of the plastic panel on the inside of the door with a screwdriver or butter knife. Once it is loose, work the screwdriver or knife all the way around the glass and remove the panel.

3.Ask someone to hold the microwave door as you disconnect it from the hinges. Depending on the design of your microwave door, you may have to remove a set of screws or slide a pin out of the hinge to release the door. Remove and discard the old door.

4.Have your assistant hold the replacement door up to the hinges. Attach the door to the hinges by reversing the previous step. Snap the plastic inner panel into place around the glass. Move the microwave back to its original location. Insert and tighten the necessary mounting screws if you are working on a built-in microwave. Set the glass tray back inside the microwave and close the door.

I had the same problem. An easy fix is to remove the door by opening the door, take a screwdriver and pop the plastic retainer piece from just below top hinge on the door. Now lift the door gently and it will come off in your hands. Set aside and be careful not to let the loss bracket that passes into the microwave body fall back into the cabinet. I would suggest you use a small vice grip locked onto that bracket to keep from lossing it inside. You will see two holes, one near the top and bottom through the cabinet into the hinge. line these holes up with the hinge holes behind them and use a pop rivet gun and 3/16" rivets to lock into place. Then replace the door and retainer piece. If you only have 1/8" rivets you can hold the bracket lined up with the original holes and drill 1/8" holes of your own a little distance away from the original holes and then pop rivet through these holes.

EASY get a machine screw, nut with washer. I believe I used a 1/8" machine screw.....(find something small to fit in the hole on the bottom hinge.

First step, take 3 screws off bottom to expose hinge area. Have someone hold it or support it so wires to the light do not pull out,.

Pop the machine screw through the front and then with your fingers get the washer an nut and tighten down.
If you want the professsional look. Paint the machine screw white first with a enamel white paint.

Hi,

It sounds like you need to check the fixing screws of the oven,failing this replace the hinges.

I hope this helps.

Repairing the loose, detached hinge is simple.
First buy a pop rivet tool and 1/8'' or 3mm rivets for about $16 at lowes
Second remove the door. There is a little plastic pop tab on the inside top corner of the door by the hinge that keeps the door from lifting off of the hinge pins. Use a 1 inch putty knife or maybe a butter knife and pry from the bottom crack. Once tab is off the entire door can be lifted off.
Third, line up the little holes in the bracket with the little holes in the microwave face. Insert a pop rivet in the hole and squeeze the tool till it pops off. I put one 3mm rivet on the top hinge and one on the bottom.
No drilling needed on my Fridgidaire PLMV169DCd microwave. I guess u could drill a 1/8'' hole thru the microwave face and the hinge bracket if there isn't one on your model.

I am not sure about your oven model.  I had a similar problem in my oven.  The hinges are riveted to the oven and can be fixed.

First remove the oven door - normally the door slides on to two prongs on either side and is screwed down.

 

Once the door is removed check the mechanism that holds the two prongs to the oven body.  Mine were held with stainless steel rivets that had worn out and became wobbly.  Cut the rivets and replace them with new ones.  You can get a rivet driver and the stainless steel rivets for under $20 at Home Depot. 

 

Hope this works for you.

My over the range microwave had a loose door, it sagged when it was open but you could lift it to close. Called repair person he said no it could not be fixed. You could see the bottom hinge was loose and slipping. I loosened 3 screws that holds the bottom on the microwave -you have to do this to change the light bulb also. The bottom hinge on the door was loose there was a hole there, so took a screw and nut to hold the hinge in place..I am a 70+year old woman-if I can you can.