How do you change interior 20 w lamp?

You have to take the medal casing off to get to the door switch

Advantium - Interior Light Operation While Microwaving

The Advantium 240 oven interior (cavity) light will illuminate anytime the door is open. However, due to the dark tint on the oven door, there is not a light on while cooking since the food would not be visible using the interior lamp.
Food may be viewed during a microwave cycle by pressing the Microwave/Oven Light pad.

One of the Upper Level Speedcook lamps will come on for 5 seconds. The Microwave/Oven Light pad can be pressed up to 5 times during a microwave cooking cycle. The limit of 5 times is to prevent excessive heat on microwave cookware from the Speedcook lamp.

The Advantium 120 oven cavity is illuminated anytime the door is opened and while the unit is in the microwave only mode. As a result it will not have the Microwave/Oven Light pad.

I have not worked on this model:

Normally the way to change the light is to remove the interior access panel OR ... (if no access panel) remove the oven cover to get access to the lamp. Two screws on each side and 6 or 8 on the back side. Lift and tilt and slid the cover from the front interlock seam and set it aside. DON'T TOUCH the silver can you see on the side. Find the lamp, remove and replace and put the cover back on.

Allow 15 minutes to do this job. Get a replacement lamp where appliance parts are sold.

Thanks for your question

Advantium - Interior Light Operation While Microwaving

The Advantium 240 oven interior (cavity) light will illuminate anytime the door is open. However, due to the dark tint on the oven door, there is not a light on while cooking since the food would not be visible using the interior lamp.
Food may be viewed during a microwave cycle by pressing the Microwave/Oven Light pad.

One of the Upper Level Speedcook lamps will come on for 5 seconds. The Microwave/Oven Light pad can be pressed up to 5 times during a microwave cooking cycle. The limit of 5 times is to prevent excessive heat on microwave cookware from the Speedcook lamp.

The Advantium 120 oven cavity is illuminated anytime the door is opened and while the unit is in the microwave only mode. As a result it will not have the Microwave/Oven Light pad.

If the light is not operating properly, you will want to have it checked by an authorized service technician. To obtain in or out of warranty repair on Major Appliances, you may call 1-800-GE-CARES (800-432-2737) or schedule service online. Advantium - Interior Light Operation While Microwaving

The Advantium 240 oven interior (cavity) light will illuminate anytime the door is open. However, due to the dark tint on the oven door, there is not a light on while cooking since the food would not be visible using the interior lamp.
Food may be viewed during a microwave cycle by pressing the Microwave/Oven Light pad.

One of the Upper Level Speedcook lamps will come on for 5 seconds. The Microwave/Oven Light pad can be pressed up to 5 times during a microwave cooking cycle. The limit of 5 times is to prevent excessive heat on microwave cookware from the Speedcook lamp.

The Advantium 120 oven cavity is illuminated anytime the door is opened and while the unit is in the microwave only mode. As a result it will not have the Microwave/Oven Light pad.

If the light is not operating properly, you will want to have it checked by an authorized service technician. To obtain in or out of warranty repair on Major Appliances, you may call 1-800-GE-CARES (800-432-2737) or schedule service online. Advantium - Interior Light Operation While Microwaving

The Advantium 240 oven interior (cavity) light will illuminate anytime the door is open. However, due to the dark tint on the oven door, there is not a light on while cooking since the food would not be visible using the interior lamp.
Food may be viewed during a microwave cycle by pressing the Microwave/Oven Light pad.

One of the Upper Level Speedcook lamps will come on for 5 seconds. The Microwave/Oven Light pad can be pressed up to 5 times during a microwave cooking cycle. The limit of 5 times is to prevent excessive heat on microwave cookware from the Speedcook lamp.

The Advantium 120 oven cavity is illuminated anytime the door is opened and while the unit is in the microwave only mode. As a result it will not have the Microwave/Oven Light pad.

If the light is not operating properly, you will want to have it checked by an authorized service technician. To obtain in or out of warranty repair on Major Appliances, you may call 1-800-GE-CARES (800-432-2737) or schedule service online. Check here

http://www.geappliances.com/search/fast/infobase/10000007.htm

Advantium - Interior Light Operation While Microwaving

The Advantium 240 oven interior (cavity) light will illuminate anytime the door is open. However, due to the dark tint on the oven door, there is not a light on while cooking since the food would not be visible using the interior lamp.
Food may be viewed during a microwave cycle by pressing the Microwave/Oven Light pad.

One of the Upper Level Speedcook lamps will come on for 5 seconds. The Microwave/Oven Light pad can be pressed up to 5 times during a microwave cooking cycle. The limit of 5 times is to prevent excessive heat on microwave cookware from the Speedcook lamp.

The Advantium 120 oven cavity is illuminated anytime the door is opened and while the unit is in the microwave only mode. As a result it will not have the Microwave/Oven Light pad.

If the light is not operating properly, you will want to have it checked by an authorized service technician. To obtain in or out of warranty repair on Major Appliances, you may call 1-800-GE-CARES (800-432-2737) or schedule service online.

How do you change convectio oven lamp?

Remove the screws from around the rear of the oven and slide the cabnet off to the rear. You should be able to access the bulb from here.
WARNING: any time you work on a microwave you have to be careful of the capacitor. Unpluge the microwave and discharge the capacitor with a large screwdriver with a plastic handle.
Be careful.

I's different with every oven. Please repost with the make and model.

Geno

Your post has two distinct model numbers shown, so it's hard to be precise, but I'll try my best.

You can usually find helpful exploded view diagrams and order parts by entering your full model number here: http://tinyurl.com/gv383

I have a diagram at my site which helps you find & replace many GE cooktop and cavity light bulbs. Other models are similar. It's at
http://207.234.249.73/mwd/ge_lamp_replacement.jpg

Always unplug a microwave before removing or installing any bulbs!

If it's an over the range type, remove the vent grille across the top and see if bulbs can be accessed there.

There may be a panel on the bottom covering the light(s), too.

If not, chances are you'll have to remove it from the wall, then remove the outer cover.

Many models use halogen lamps. You must not touch the new one with your bare skin, as the oils will shorten the bulb life.

If yours is an Advantium type, the following instructable should help: http://www.instructables.com/id/SZFF4WSF44XYT8X/?comments=all

We're happy to help and we appreciate your thoughtful rating of our answer.