Price Match Guarantee
In-stock parts ship the same day
365-Day Return Policy
Price Match GuaranteeGET PRO PRICING
Video & Articles: Appliance & Equipment RepairFrigidaire Microwave Oven Diode Replacement 5304509479 
Frigidaire Microwave Oven Diode Replacement 5304509479
Skill Level
Total Parts Cost
$46.05Estimated Savings
$112.5006:39
- Description
This video provides step-by-step repair instructions for replacing the diode on a Frigidaire microwave oven (Model FFMV1645TSA). The most common reason for replacing this part is if the microwave will not work at all.
All of the information for this video is applicable to the following brands:
Frigidaire
All of the information for this video is applicable to the following brands:
Frigidaire
Step By Step Instructions
1
Frigidaire Microwave Oven - Model FFMV1645TSA
2
Microwave Oven Diode Replacement
3
Tools & Assistance Needed
4
You will need a towel or blanket, a phillips-head screwdriver, a putty knife and needle-nose pliers for this procedure, and you may need assistance.
5
Shock
6
Because of the high voltage and high current used by microwave ovens, be aware that repairing this appliance poses a substantial risk for injury or death if precautions are not taken.
7
Unplug the microwave before you attempt any disassembly.
8
Since high voltage capacitors used in microwaves may retain a charge even after the microwave has been unplugged, we recommend that only experienced professionals access and replace internal components.
9
To replace the diode, uninstall the appliance.
10
Before doing this, remove the glass turntable and support.
11
Have an assistant support the microwave while you unthread the three mounting bolts from the upper cabinet.
12
Heavy
13
Carefully tilt the microwave down and pull the power cord through the hole in the cabinet.
14
Lift the microwave off the mounting plate.
15
Set the appliance down on its rear panel on a sturdy surface covered by a towel or blanket.
16
Use a phillips-head screwdriver to unthread the screws securing the oven?s bottom panel.
17
Disconnect the led light wire connecter and fully remove the bottom panel.
18
Tip the appliance upright and prop up the front.
19
Open the door and unthread the two screws securing the front vent.
20
You can use a putty knife to help pry the vent off.
21
Next, unthread all of the screws securing the cabinet cover.
22
Unthread the three screws securing the blower assembly cover.
23
Sharp
24
Slide the cover back to detach.
25
You can now fully remove the cabinet cover.
26
Shock
27
You should release the potentially stored electrical charge in the capacitor to avoid injury.
28
You can do this by placing needle-nose pliers with an insulated handle across each set of terminals.
29
Unthread the screw securing the diode grounding wire to the frame.
30
You can now use needle-nose pliers to detach the old diode.
31
Install the new diode by attaching it to the capacitor terminal.
32
Thread the screw to secure the diode grounding wire.
33
Reposition the cabinet cover.
34
Rethread all of the screws.
35
Slide the blower assembly cover into position and thread the screws to secure.
36
Reinstall the front vent by aligning the top edge first then press the bottom edge into place.
37
Rethread the two screws.
38
Tip the appliance back.
39
Reinstall the bottom panel by first connecting the led light wire connecter.
40
Realign the panel and rethread the screws.
41
Carefully reposition the microwave on the mounting plate by hooking the back edge of the appliance on the tabs.
42
Insert the power cord through the hole in the upper cabinet.
43
Lift the microwave up and secure it with the mounting bolts.
44
Plug the power cord back in.
45
Replace the turntable support then align the turntable on the coupler.
46
Congrats! Your microwave oven is ready for use.
Description
This video provides step-by-step repair instructions for replacing the diode on a Frigidaire microwave oven (Model FFMV1645TSA). The most common reason for replacing this part is if the microwave will not work at all.
All of the information for this video is applicable to the following brands:
Frigidaire
All of the information for this video is applicable to the following brands:
Frigidaire
Step-By-Step Instructions
1
Frigidaire Microwave Oven - Model FFMV1645TSA
2
Microwave Oven Diode Replacement
3
Tools & Assistance Needed
4
You will need a towel or blanket, a phillips-head screwdriver, a putty knife and needle-nose pliers for this procedure, and you may need assistance.
5
Shock
6
Because of the high voltage and high current used by microwave ovens, be aware that repairing this appliance poses a substantial risk for injury or death if precautions are not taken.
7
Unplug the microwave before you attempt any disassembly.
8
Since high voltage capacitors used in microwaves may retain a charge even after the microwave has been unplugged, we recommend that only experienced professionals access and replace internal components.
9
To replace the diode, uninstall the appliance.
10
Before doing this, remove the glass turntable and support.
11
Have an assistant support the microwave while you unthread the three mounting bolts from the upper cabinet.
12
Heavy
13
Carefully tilt the microwave down and pull the power cord through the hole in the cabinet.
14
Lift the microwave off the mounting plate.
15
Set the appliance down on its rear panel on a sturdy surface covered by a towel or blanket.
16
Use a phillips-head screwdriver to unthread the screws securing the oven?s bottom panel.
17
Disconnect the led light wire connecter and fully remove the bottom panel.
18
Tip the appliance upright and prop up the front.
19
Open the door and unthread the two screws securing the front vent.
20
You can use a putty knife to help pry the vent off.
21
Next, unthread all of the screws securing the cabinet cover.
22
Unthread the three screws securing the blower assembly cover.
23
Sharp
24
Slide the cover back to detach.
25
You can now fully remove the cabinet cover.
26
Shock
27
You should release the potentially stored electrical charge in the capacitor to avoid injury.
28
You can do this by placing needle-nose pliers with an insulated handle across each set of terminals.
29
Unthread the screw securing the diode grounding wire to the frame.
30
You can now use needle-nose pliers to detach the old diode.
31
Install the new diode by attaching it to the capacitor terminal.
32
Thread the screw to secure the diode grounding wire.
33
Reposition the cabinet cover.
34
Rethread all of the screws.
35
Slide the blower assembly cover into position and thread the screws to secure.
36
Reinstall the front vent by aligning the top edge first then press the bottom edge into place.
37
Rethread the two screws.
38
Tip the appliance back.
39
Reinstall the bottom panel by first connecting the led light wire connecter.
40
Realign the panel and rethread the screws.
41
Carefully reposition the microwave on the mounting plate by hooking the back edge of the appliance on the tabs.
42
Insert the power cord through the hole in the upper cabinet.
43
Lift the microwave up and secure it with the mounting bolts.
44
Plug the power cord back in.
45
Replace the turntable support then align the turntable on the coupler.
46
Congrats! Your microwave oven is ready for use.
Applicable Product Model
Parts Needed
Diode
$46.05
Total$0.00
Related Articles & Videos
04:16
Part Replacement
Frigidaire Microwave Oven Center Door Switch Replacement 5304509459
Our Story
Family-owned and operated since 1912, Burke America Parts Group is the longest-running genuine appliance, HVAC, and outdoor power equipment parts solution in North America. At Repair Clinic, we're proud to be an international brand trusted by the pros as well as the DIY community.
About Repair Clinic
© 2026 RepairClinic.com