MICROWAVE DOES NOT START OR IS COMPLETELY UNRESPONSIVE
LG Microwave; range/oven Time-delay line fuse 3B74133C, Replaces 3B70856K, 3B74133N, Fixes Microwave does not start or is completely unresponsive
Genuine LG time-delay line fuse rated 10A, 250V, used in select microwave and range/oven circuits.
Part 3B74133CReplaces 3B70856K, 3B74133NLG
Genuine LG time-delay line fuse rated 10A, 250V, used in select microwave and range/oven circuits.
Is This the Right Part?
Part Number3B74133C
Replaces3B70856K, 3B74133N
ManufacturerLG
Appliance TypeMicrowave; range/oven
Part TypeTime-delay line fuse
Common Symptoms
- Microwave will not start
- Appliance has no power or is completely unresponsive
- Fuse repeatedly blows after replacement
Check Before Replacing
- With appliance power disconnected, test the fuse for continuity using an appropriate meter.
- If the fuse has no continuity, inspect for an underlying electrical fault before installing another fuse.
- Microwave service work requires special caution because the high-voltage capacitor can retain a dangerous charge after unplugging.
Pro Tip
Replace only with the exact specified fuse rating and investigate the cause of a blown fuse before restoring power.
Part Details
Part Number3B74133C
Part TypeTime-delay line fuse
ManufacturerLG
Appliance TypeMicrowave; range/oven
Primary FunctionOpens the appliance circuit when excessive current passes through it, helping protect internal wiring and components.
Cross References3B70856K, 3B74133N
Key Features
- Time-delay fuse
- 10A rating
- 250V rating
- Genuine LG OEM part
- Clear fuse body shown in product documentation
Installation Notes
- Disconnect appliance power before servicing.
- For microwaves, high-voltage components can remain hazardous after unplugging; service should be performed by a qualified technician.
- Replace with the exact 3B74133C specification; do not substitute a different rating.
Verified Compatible Models
295.89998, 295.89999, 62622200, 701.80009401, 721.62212201, 721.62219, 721.62222, 721.62223201, 721.62229301, 721.62252, 721.62259, 721.62349, 721.62362, LMHM2017ST/01, LSE3092ST/00, MS-197W, LCSP1110ST-CSBELGA, LMV2015ST, LSMH207ST, LWS3010ST
Fitment reminder: Match the complete appliance model number, including suffix or revision where applicable, before ordering.
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Address
101 Trillium Dr
Kitchener, Ontario N2E 1W8
Kitchener, Ontario N2E 1W8
Phone
Hours
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All brand names are the property of their respective owners and are used for compatibility reference only.
