HBL5751UC (01) Bosch Microwave - Overview

Sections of the HBL5751UC

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Rear Rack Support – Part Number: 00631440
Rear Rack Support
★★★★★
★★★★★
(6)
PartSelect #: PS10060771
Manufacturer #: 00631440
$10.09
  In Stock
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Front Rack Support – Part Number: 00631439
Front Rack Support
★★★★★
★★★★★
(2)
PartSelect #: PS10060770
Manufacturer #: 00631439
This front rack support helps stabilize and securely position a rack within the appliance. Its sturdy design ensures proper alignment and safe support during loading and unloading.
$10.09
  In Stock
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Microwave Fuse – Part Number: 00631510
Microwave Fuse
★★★★★
★★★★★
(1)
PartSelect #: PS10060777
Manufacturer #: 00631510
This microwave line fuse is a genuine replacement part designed to protect your appliance from power surges and overheating. It helps restore power when a blown fuse prevents the microwave from turnin...
$10.49
  In Stock
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Microwave Switch – Part Number: 00631512
Microwave Switch
★★★★★
★★★★★
(1)
PartSelect #: PS10060778
Manufacturer #: 00631512
Keep your microwave safe with this door interlock switch. It stops the microwave from running when the door is open, protecting you from accidental exposure. If your microwave won’t start or acts up, ...
$19.00
  In Stock
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Cooking Tray - Black – Part Number: 00795449
Cooking Tray - Black
★★★★★
★★★★★
(15)
PartSelect #: PS10061150
Manufacturer #: 00795449
This black metal tray helps your microwave heat food evenly by rotating during cooking. It fits on rollers and sits on the coupler inside the microwave, turning smoothly to make sure everything gets h...
$192.45
  In Stock
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DRIVE COUPLING – Part Number: 00628013
DRIVE COUPLING
★★★★★
★★★★★
(14)
PartSelect #: PS8770347
Manufacturer #: 00628013
Keep your microwave working like new with this easy-to-install turntable coupler. It links the motor to the glass tray so your food rotates evenly for better cooking. If your tray wobbles or doesn’t t...
$20.08
  In Stock
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COVER – Part Number: 00617090
COVER
★★★★★
★★★★★
(4)
PartSelect #: PS9492671
Manufacturer #: 00617090
This waveguide cover protects the interior of the microwave by shielding key components from food splatter and moisture. Made from durable mica material, it helps prevent sparking and keeps the applia...
$13.10
  In Stock
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Door Hinge - Right Side – Part Number: 00631518
Door Hinge - Right Side
★★★★★
★★★★★
(5)
PartSelect #: PS10060784
Manufacturer #: 00631518
This microwave door hinge helps your appliance open and close smoothly while keeping the door sealed tight. It’s an important part that makes sure the microwave only runs when the door is shut, keepin...
$143.05
  In Stock
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SUPPORT – Part Number: 00648812
SUPPORT
★★★★★
★★★★★
(2)
PartSelect #: PS8770379
Manufacturer #: 00648812
The left door interlock support keeps the microwave’s door switch properly aligned so the appliance can detect when the door is fully closed and operate safely. If the switch becomes loose or misalign...
$14.17
  In Stock
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SUPPORT – Part Number: 00648813
SUPPORT
★★★★★
★★★★★
(7)
PartSelect #: PS8770380
Manufacturer #: 00648813
This support is a replacement structural component designed to hold or stabilize internal assemblies during operation. It helps maintain alignment and durability and is commonly replaced when bent, cr...
$14.17
  In Stock
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Door Hinge - Left Side – Part Number: 00631517
Door Hinge - Left Side
★★★★★
★★★★★
(1)
PartSelect #: PS10060783
Manufacturer #: 00631517
This hinge helps your microwave door open and close smoothly and safely. It’s made for the left side and is built to last, but if your door is hard to open, won’t stay closed, or makes strange noises,...
$143.05
  In Stock
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COVER – Part Number: 00771186
COVER
★★★★★
★★★★★
(6)
PartSelect #: PS11705124
Manufacturer #: 00771186
This inner door panel helps keep your microwave safe and efficient by sealing the door and blocking radiation leaks. It also adds to the appliance’s clean look and protects internal parts. If your cur...
$75.98
  In Stock
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Questions And Answers for HBL5751UC

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Common Symptoms of the HBL5751UC

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Won’t turn on
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Tray won’t turn
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Door not closing properly
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Sparking
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Noisy
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Little to no heat when baking
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Element will not heat
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No heat
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Keep searches simple. Use keywords, e.g. "leaking", "pump", "broken" or "fit".
Right hinge failed - return spring broken
I installed a new right hinge (PartSelect part number PS10060784), since the integrated return spring failed.
To remove the door, I made two of the special tools required in the Bosch repair manual. I fabricated two square pieces of aluminum, about 30mm on a side and ¼” thick. With the door open (it is horizontal) you place one square in each of the cavities that the hinges close into and close the door far enough that the squares take up the force of the springs and allow you to lift the door out. Of course, if one spring is broken, you will not need a square on that side to remove the door but will need it later to install the door with the new hinge. In fact, I installed the square in the replacement hinge before I installed the hinge in the door.
Next remove the ventilation duct (Part number PS8770410). There are three screws. When re-installing the duct later, do not overtighten the screws, because they can pull through the duct. This will require longer screws and small flat washers to repair (‘don’t ask me how I know’).
The next step is to remove the plastic cover (PartSelect part number PS11705124). It will be impossible to save the plastic cover (‘don’t ask me how I know’). Purchase a new one ahead of time. It will be easier to not scratch the door if you recognize that you are going to destroy the cover.
When removing the plastic cover, pieces of some of the tabs that hold the cover in place will break off. The broken-off pieces of the tabs that fit into cavities at the top of the door may remain in the cavities. IF YOU DO NOT PICK OUT THOSE PIECES, THE NEW COVER WILL NOT SNAP HOME DUE TO THE PRESENCE OF THE BROKEN PIECES. You will break the new cover in removing it to figure out why it wouldn’t snap home and will have the pleasure of purchasing a second new cover (‘don’t ask me now I know’).
Also, when removing the cover try not to bend the metal fingers of the frame (part number PS8770415), particularly along the top of the door. It is important that the gap between the metal fingers and the frame holding the glass be correct, since that is where the seal (part number PS10061106) must fit when replacing the cover. On the other hand, if the metal fingers are bent too far away from the frame holding the glass, the cover will not line up with the cavities along the top where the tabs go home. It will be easier to protect the metal fingers if you recognize that you will be destroying the cover when you remove it.
I did pinch and damage the seal when trying to force the first new cover in place (it didn’t go home, as described above), and had the pleasure of purchasing another seal (currently unavailable). You only get one chance per cover.
Once the cover is removed the frame can be removed from the outer door by removing the screws holding the two parts together.

Next, replace the spring.

Next re-attach the frame to the outer door.

Next, be sure the seal is positioned correctly on the cover. The seal has a flap that holds it in place on the cover, such that the seal will be pulled into place when installing the cover. This is essential, since you will not be able to reposition the seal once the cover snaps home (particularly along the top of the door).

Now, carefully position the cover so that it is going to remain parallel with the door when you push it home. You do not want the cover to be cocked, since the seal may not install correctly. Be sure all the tabs are falling into place as you install the cover. Hopefully, the tabs will all snap into place and the seal will stay in place.

Replace the door by feeding the hinges into place with the squares still installed. Open the door fully and remove the squares. The door will close correctly if the hinges are placed correctly. This may take several tries.

Finally, microwave yourself a fresh cup of coffee or other beverage.

This door is not meant to be repaired, in my opinion. I believe Bosch offers only the option of buying a new door. A DIY repair is not risk free.
Parts Used:
COVER SEAL
  • WEST from RIDGECREST, CA
  • Difficulty Level:
    Very Difficult
  • Total Repair Time:
    More than 2 hours
  • Tools:
    Pliers, Screw drivers
20 of 22 people found this instruction helpful.
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Microwave was sparking
Replaced the wave cover. Unscrewed existing cover that is at the top inside the microwave. Screwed in the new cover.
Took about 30 seconds to do. Bosch service wanted over $100 for a service call plus parts and labor. Did it myself in seconds for under $10.
Parts Used:
COVER
  • Nancy from ST AUGUSTINE, FL
  • Difficulty Level:
    Very Easy
  • Total Repair Time:
    Less than 15 mins
  • Tools:
    Screw drivers
11 of 15 people found this instruction helpful.
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Microwave would run for 30 seconds and shut off
Thermal switch on top of Magnetron was defective, spade contacts were burned and loose. New switch $6 +shipping. Removed top cover held on with several Philips head screws. Plugged unit in and gave it 30 seconds to test the fan was working, it was. Put 500ml water in cavity, ran it for 60 seconds, which after fiddling with wires it did, and got over 20C temp rise so magnetron was working (detailed instructions online). Switch is right on top of magnetron. Tried to remove spade lugs but lugs pulled out of switch so I cut the lugs off and removed the broken switch. Screwed down new switch using old hardware. Trimmed wires back and cleaned them. Used crimping tool to put on new spade lugs from car parts store. put heat shrink over lugs and wires to strain relief and buttoned the unit up. Microwave works fine and oven baked a cake so good repair.
Parts Used:
REGULATOR-TEMPERATURE REGULATOR-TEMPERATURE
  • Scot from FRUITA, CO
  • Difficulty Level:
    Easy
  • Total Repair Time:
    30 - 60 mins
  • Tools:
    Screw drivers
5 of 5 people found this instruction helpful.
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