3B74133Q Oven Time Delay Fuse
3B74133Q Oven Time Delay Fuse

LG Microwave Time Delay Fuse 3B74133Q, Replaces 3B74133H, 3B74133J, 3B74133K, EAF42072605

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MICROWAVE HAS NO POWER OR WILL NOT START WHEN THE FUSE IS OPEN

LG Microwave Time Delay Fuse 3B74133Q, Fixes Microwave has no power or will not start when the fuse is open

Genuine LG time-delay/line fuse. Direct sources document use in microwaves and also list fitment in ranges, wall ovens, and microwave oven combinations.

Part 3B74133QReplaces 3B74133H, 3B74133J, 3B74133K, EAF42072605LG
Guaranteed to Fit — or your money back.
Confirm your full appliance model number before ordering.

Is This the Right Part?

Part Number3B74133Q
Replaces3B74133H, 3B74133J, 3B74133K, EAF42072605
ManufacturerLG
Appliance TypeMicrowave
Part TypeTime Delay Fuse

✅ Cross Reference Information

Current Part Number3B74133Q
Replaces3B74133H, 3B74133J, 3B74133K, EAF42072605

Common Symptoms

  • Microwave does not turn on
  • No response from the control panel
  • Microwave stops operating unexpectedly after an electrical fault or surge
  • Fuse or circuit protection repeatedly opens

Check Before Replacing

  • Disconnect power before any inspection.
  • If qualified to access the fuse, test the removed fuse for continuity with a multimeter; an open circuit indicates a failed fuse.
  • Confirm the replacement fuse matches the appliance documentation and the original fuse rating; do not substitute a different rating.
  • If a replacement fuse opens again, stop replacing fuses and have the underlying electrical fault diagnosed.
  • Do not work inside the microwave unless properly trained; the high-voltage capacitor can retain a dangerous charge even when unplugged.

Pro Tip

A blown fuse is often a protective result rather than the root cause. If the new fuse opens again, investigate the underlying fault instead of repeatedly replacing the fuse.

Part Details

Part Number3B74133Q
Part TypeTime Delay Fuse
ManufacturerLG
Appliance TypeMicrowave
Primary FunctionProtects the microwave’s incoming electrical circuit by opening during an overcurrent or power-surge condition while tolerating normal startup current as a time-delay fuse.

Installation Notes

  • Disconnect the appliance from power before service.
  • Fuse access and replacement location vary by model; use the model-specific service documentation.
  • Microwave repair requires special caution because high-voltage components may retain a dangerous charge after unplugging.
  • Install only the specified fuse type and rating, and investigate any repeat fuse failure before returning the appliance to service.

Verified Compatible Models

LCS1112ST, LCS1112ST - CS1EBBY, LCS1112ST - CSBEAMZ, LCS1112ST - CSBEBBY, LCS1112ST - CSBELGA, LCS1112ST - CSBETAR, LMC0975ST, LMC0975ST - CS1EBBY, LMC0975ST - CS1ELNA, LMC0975ST - CSSEBBY, LMC0975ST - CSSELNA, LMC1275SB, LMC1575BD, LMC1575BD - CB5EBBY, LMC1575BD - CB5ELNA, LMC1575BD - CBDEBBY, LMC2075BD, LMC2075BD - CBDEBBY, LMC2075BD - CBDELNA, LMC2075ST, LMC2075ST - CSSEBBY, LMC2075ST - CSSELNA, LMV1760ST, LMV1764ST, LMV1831BD, LMV1831SS, LMV2031BD, LMVH1711ST, LMVH1711ST - AS1ELGA, LMVH1711ST - CSBELGA, LMVM2033ST, LMVM2033ST - CSBELGA, LSE4617ST, LSMC3086SS, LWC3063BD, LWD3081ST, LCRM1240SB, LCRM1240ST, LCRM1240SW, LMA1150SV, LMA1180ST, LMA1560SB, LMAB1240ST, LMB0960ST, LMHM2017SB, LMHM2017ST, LMV1630BB, LMV1630ST, LMV1630WW, LMV1650SB, LMV1650ST, LMV1650SW, LMV1680BB, LMV1680ST, LMV1680WW, LMV1813ST, LMV2015SB, LMV2015ST, LMV2083SB, LMV2083ST, LMV2083SW, LMVM2085SB, LMVM2085ST, LMVM2085SW, LRM1230B, LRM1230W, LRM1250B, LRM1250W01, LRM1260SW, LRMP1270ST, LTRM1240SB, LTRM1240SW, MV1501W, MV1502B, MV1502W, MV1604SB, MV1604SBQ, MV1604ST, MV1604SW, MV1608BB, MV1608ST, MV1608WW, MV1610ST, MV1610WW, MVH1615WW, MVH1670ST

Fitment reminder: Match the complete appliance model number, including suffix or revision where applicable, before ordering.

✅Compatibility & Cross Reference

3B74133H, 3B74133J, 3B74133K, EAF42072605, EAF60710301

LCRM1240SB, LCRM1240ST, LCRM1240SW, LCS1112ST, LCS1112ST - CS1EBBY, LCS1112ST - CSBEAMZ, LCS1112ST - CSBEBBY, LCS1112ST - CSBELGA, LCS1112ST - CSBETAR, LMA1150SV, LMA1180ST, LMA1560SB, LMAB1240ST, LMB0960ST, LMC0975ST, LMC0975ST - CS1EBBY, LMC0975ST - CS1ELNA, LMC0975ST - CSSEBBY, LMC0975ST - CSSELNA, LMC1275SB, LMC1575BD, LMC1575BD - CB5EBBY, LMC1575BD - CB5ELNA, LMC1575BD - CBDEBBY, LMC2075BD, LMC2075BD - CBDEBBY, LMC2075BD - CBDELNA, LMC2075ST, LMC2075ST - CSSEBBY, LMC2075ST - CSSELNA, LMHM2017SB, LMHM2017ST, LMV1630BB, LMV1630ST, LMV1630WW, LMV1650SB, LMV1650ST, LMV1650SW, LMV1680BB, LMV1680ST, LMV1680WW, LMV1760ST, LMV1764ST, LMV1813ST, LMV1831BD, LMV1831SS, LMV2015SB, LMV2015ST, LMV2031BD, LMV2083SB, LMV2083ST, LMV2083SW, LMVH1711ST, LMVH1711ST - AS1ELGA, LMVH1711ST - CSBELGA, LMVM2033ST, LMVM2033ST - CSBELGA, LMVM2085SB, LMVM2085ST, LMVM2085SW, LRM1230B, LRM1230W, LRM1250B, LRM1250W01, LRM1260SW, LRMP1270ST, LSE4617ST, LSMC3086SS, LTRM1240SB, LTRM1240SW, LWC3063BD, LWD3081ST, MV1501W, MV1502B, MV1502W, MV1604SB, MV1604SBQ, MV1604ST, MV1604SW, MV1608BB, MV1608ST, MV1608WW, MV1610ST, MV1610WW, MVH1615WW, MVH1670ST

3B74133Q, LG, Time Delay Fuse, Microwave, 3B74133H, 3B74133J, 3B74133K, EAF42072605, EAF60710301

Not sure about your model number? Call 1-877-899-7278 and we’ll help you confirm. All brand names are the property of their respective owners and are used for compatibility reference only.

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