{"product_id":"whirlpool-microwave-inverter-w11578579","title":"Whirlpool Microwave Inverter W11578579 — Fix Microwave That Won't Heat or Has No Power","description":"\u003cstyle\u003e\n.hero-banner{position:relative;overflow:hidden;background:linear-gradient(135deg,rgba(0,0,0,.86) 55%,rgba(0,0,0,.45)),url('https:\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/background-editor_output_06b493ea-5c8a-4d8c-b253-36f905ac4ad3.png?v=1737131725') center\/cover no-repeat;padding:44px 34px;border-radius:12px;margin:0 0 28px;color:#fff;box-shadow:0 10px 30px rgba(0,0,0,.25)}\n.hero-banner:before{content:'';position:absolute;inset:0;background:radial-gradient(circle at center,rgba(0,153,255,.20),transparent 65%);animation:pulse 5s infinite}\n.hero-banner\u003e*{position:relative;z-index:2}\n.hero-banner h2{margin:0 0 8px;font-size:1.85em;font-weight:900;letter-spacing:.2px;line-height:1.1}\n.label{display:inline-block;background:#c8a400;color:#000;font-size:.72em;font-weight:900;text-transform:uppercase;letter-spacing:1px;padding:5px 12px;border-radius:999px;margin-bottom:12px}\n.hero-specs{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}\n.hero-specs span{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);border-radius:999px;padding:7px 13px;font-size:.82em;font-weight:800}\n.pro-tip{position:relative;overflow:hidden;background:#1a1a2e;border-left:5px solid #c8a400;padding:16px 20px;border-radius:8px;margin:24px 0;color:#f0f0f0;font-size:.95em;line-height:1.6}\n.pro-tip strong{color:#c8a400}\n.upsell-box{background:#ffecd1;border-left:5px solid #ff9800;padding:14px 18px;margin:20px 0;border-radius:8px}\n@keyframes pulse{50%{opacity:.85}}\n\u003c\/style\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/999999.png?v=1780450090\" style=\"width:100%;display:block;margin:0 0 24px;border-radius:10px;\" alt=\"Bubba's Warehouse Sale\"\u003e\n\n\u003cdiv class=\"hero-banner\"\u003e\n  \u003cdiv class=\"label\"\u003eGenuine OEM Replacement Part\u003c\/div\u003e\n  \u003ch2\u003eWhirlpool Microwave Inverter W11578579 — Fix Microwave That Won’t Heat or Has No Power\u003c\/h2\u003e\n  \u003cdiv class=\"hero-specs\"\u003e\n    \u003cspan\u003ePart# W11578579\u003c\/span\u003e\n    \u003cspan\u003eReplaces W11504539\u003c\/span\u003e\n    \u003cspan\u003eFits Whirlpool\u003c\/span\u003e\n    \u003cspan\u003eFits Jenn-Air\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch1\u003eMicrowave Won’t Heat or Showing Error Codes? Inverter W11578579 – Fix a Dead or No-Heat Whirlpool Microwave Fast\u003c\/h1\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen a Whirlpool built-in microwave stops heating, displays error codes, or won’t power on at all, the inverter board is the most common cause — and one of the most misdiagnosed.\u003c\/strong\u003e In most Whirlpool and Jenn-Air over-the-range and built-in microwaves, this is caused by a failed microwave inverter. When it fails, the magnetron receives no power — the microwave runs, the turntable spins, the light works, but nothing heats. \u003cstrong\u003e⚡ Common failure point in Whirlpool JMC, JMW, WOC, and MMW series microwaves.\u003c\/strong\u003e \u003cstrong\u003ePart W11578579\u003c\/strong\u003e is the genuine OEM replacement that restores full power delivery and heating performance with no modifications required — direct supersession of W11504539.\u003c\/p\u003e\n\n\u003ch3\u003e❓ Is This the Right Part?\u003c\/h3\u003e\n\u003cp\u003eThis is the correct fix if ALL of the following are true:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e✔ Microwave powers on — display, light, and turntable all function\u003c\/li\u003e\n  \u003cli\u003e✔ Door switches tested and confirmed functional\u003c\/li\u003e\n  \u003cli\u003e✔ High-voltage capacitor has been discharged and tested\u003c\/li\u003e\n  \u003cli\u003e✔ Magnetron has been tested and is not shorted or open\u003c\/li\u003e\n  \u003cli\u003e✔ ONLY problem is microwave runs but produces no heat, or shows inverter-related error codes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot sure? \u003ca href=\"\/pages\/contact\"\u003eSend us your model number\u003c\/a\u003e — we’ll confirm before you order.\u003c\/p\u003e\n\n\u003ch3\u003e🔧 Common Symptoms\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eMicrowave runs but produces no heat at all\u003c\/li\u003e\n  \u003cli\u003eWeak or inconsistent heating — food barely warm after full cycle\u003c\/li\u003e\n  \u003cli\u003eError codes displayed that won’t clear after reset\u003c\/li\u003e\n  \u003cli\u003eMicrowave won’t power on or start\u003c\/li\u003e\n  \u003cli\u003eLoud humming or buzzing during operation without heating\u003c\/li\u003e\n  \u003cli\u003eMicrowave shuts off unexpectedly mid-cycle\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e✔ If these symptoms match, this is the most likely failed component in the system.\u003c\/p\u003e\n\u003cp\u003e✔ In most cases, replacing this inverter board restores full heating performance immediately.\u003c\/p\u003e\n\n\u003ch3\u003e📦 Part Details\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e W11578579\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Microwave Inverter Board \/ Power Control Board\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReplaces:\u003c\/strong\u003e W11504539 — no modification required\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrands:\u003c\/strong\u003e Whirlpool, Jenn-Air\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"upsell-box\"\u003e\n  \u003cstrong\u003e⚠️ Recommended While Repairing:\u003c\/strong\u003e\u003cbr\u003e\n  Before replacing the inverter, always discharge the high-voltage capacitor — it can hold a lethal charge even after the microwave is unplugged. Also test the magnetron for continuity and shorts before installing the new inverter board. A shorted magnetron will destroy the replacement inverter within minutes of operation.\n\u003c\/div\u003e\n\n\u003ch3\u003e⚙️ Installation\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSkill Level: Advanced — 45–60 minutes.\u003c\/strong\u003e Disconnect power and discharge the high-voltage capacitor before touching any internal components — microwave capacitors can hold 2,000+ volts and are potentially lethal. Remove the outer cabinet, locate the inverter board, photograph all wiring harness connections, disconnect and remove the old board, and install the new one in reverse order. If you are not experienced with high-voltage appliance repair, professional installation is strongly recommended.\u003c\/p\u003e\n\n\u003ch3\u003e✓ Compatible Models\u003c\/h3\u003e\n\u003cp\u003eConfirmed compatible with JMC2427LL00, JMC2427LM00, JMC2430IL15, JMC2430LL00, JMC2430LM00, JMW2427LL00, JMW2427LM00, JMW2430LL00, JMW2430LM00, JMW3430LL00, JMW3430LM00, MMW9730FZ20, WOC54EC0HB20, WOC54EC0HS20, WOC54EC0HW20, WOC54EC7HB20, WOC54EC7HS20, WOC54EC7HW20, WOC75EC0HS20, WOC75EC0HV20, WOC75EC7HS20, WOC75EC7HV20. \u003ca href=\"\/pages\/contact\"\u003eContact us to verify your model number\u003c\/a\u003e before ordering.\u003c\/p\u003e\n\n\u003ch3\u003e💡 Pro Tip\u003c\/h3\u003e\n\u003cdiv class=\"pro-tip\"\u003e\n  \u003cstrong\u003eDischarge the Capacitor Before You Touch Anything:\u003c\/strong\u003e\u003cbr\u003e\n  Microwave high-voltage capacitors store enough energy to cause cardiac arrest — even after the unit has been unplugged for hours. Before touching any internal component, discharge the capacitor using an insulated screwdriver across both terminals. You’ll hear a loud pop if it was charged. Do this every time, without exception. No repair is worth your life.\n\u003c\/div\u003e\n\n\u003ch2\u003e✓ Model-Specific Repair Pages\u003c\/h2\u003e\n\u003cdiv class=\"model-link-grid\"\u003e\n  \u003ca href=\"\/pages\/whirlpool-microwave-jmc2430ll00-parts\" style=\"display:inline-block;border:1px solid #cc0000;border-radius:20px;padding:5px 14px;font-size:13px;color:#cc0000;text-decoration:none;margin:4px;\"\u003eJMC2430LL00\u003c\/a\u003e\n  \u003ca href=\"\/pages\/whirlpool-microwave-jmc2430il15-parts\" style=\"display:inline-block;border:1px solid #cc0000;border-radius:20px;padding:5px 14px;font-size:13px;color:#cc0000;text-decoration:none;margin:4px;\"\u003eJMC2430IL15\u003c\/a\u003e\n  \u003ca href=\"\/pages\/whirlpool-microwave-jmc2427lm00-parts\" style=\"display:inline-block;border:1px solid #cc0000;border-radius:20px;padding:5px 14px;font-size:13px;color:#cc0000;text-decoration:none;margin:4px;\"\u003eJMC2427LM00\u003c\/a\u003e\n  \u003ca href=\"\/pages\/whirlpool-microwave-jmc2427ll00-parts\" style=\"display:inline-block;border:1px solid #cc0000;border-radius:20px;padding:5px 14px;font-size:13px;color:#cc0000;text-decoration:none;margin:4px;\"\u003eJMC2427LL00\u003c\/a\u003e\n  \u003ca href=\"\/pages\/ge-microwave-jmc2430lm00-parts\" style=\"display:inline-block;border:1px solid #cc0000;border-radius:20px;padding:5px 14px;font-size:13px;color:#cc0000;text-decoration:none;margin:4px;\"\u003eJMC2430LM00\u003c\/a\u003e\n  \u003ca href=\"\/pages\/whirlpool-oven-woc75ec7hv20-parts\" style=\"display:inline-block;border:1px solid #cc0000;border-radius:20px;padding:5px 14px;font-size:13px;color:#cc0000;text-decoration:none;margin:4px;\"\u003eWOC75EC7HV20\u003c\/a\u003e\n  \u003ca href=\"\/pages\/whirlpool-oven-woc75ec7hs20-parts\" style=\"display:inline-block;border:1px solid #cc0000;border-radius:20px;padding:5px 14px;font-size:13px;color:#cc0000;text-decoration:none;margin:4px;\"\u003eWOC75EC7HS20\u003c\/a\u003e\n  \u003ca href=\"\/pages\/whirlpool-oven-woc75ec0hv20-parts\" style=\"display:inline-block;border:1px solid #cc0000;border-radius:20px;padding:5px 14px;font-size:13px;color:#cc0000;text-decoration:none;margin:4px;\"\u003eWOC75EC0HV20\u003c\/a\u003e\n  \u003ca href=\"\/pages\/whirlpool-oven-woc75ec0hs20-parts\" style=\"display:inline-block;border:1px solid #cc0000;border-radius:20px;padding:5px 14px;font-size:13px;color:#cc0000;text-decoration:none;margin:4px;\"\u003eWOC75EC0HS20\u003c\/a\u003e\n  \u003ca href=\"\/pages\/whirlpool-oven-woc54ec7hw20-parts\" style=\"display:inline-block;border:1px solid #cc0000;border-radius:20px;padding:5px 14px;font-size:13px;color:#cc0000;text-decoration:none;margin:4px;\"\u003eWOC54EC7HW20\u003c\/a\u003e\n  \u003ca href=\"\/pages\/whirlpool-oven-woc54ec7hs20-parts\" style=\"display:inline-block;border:1px solid #cc0000;border-radius:20px;padding:5px 14px;font-size:13px;color:#cc0000;text-decoration:none;margin:4px;\"\u003eWOC54EC7HS20\u003c\/a\u003e\n  \u003ca href=\"\/pages\/whirlpool-oven-woc54ec7hb20-parts\" style=\"display:inline-block;border:1px solid #cc0000;border-radius:20px;padding:5px 14px;font-size:13px;color:#cc0000;text-decoration:none;margin:4px;\"\u003eWOC54EC7HB20\u003c\/a\u003e\n  \u003ca href=\"\/pages\/whirlpool-oven-woc54ec0hw20-parts\" style=\"display:inline-block;border:1px solid #cc0000;border-radius:20px;padding:5px 14px;font-size:13px;color:#cc0000;text-decoration:none;margin:4px;\"\u003eWOC54EC0HW20\u003c\/a\u003e\n  \u003ca href=\"\/pages\/whirlpool-oven-woc54ec0hs20-parts\" style=\"display:inline-block;border:1px solid #cc0000;border-radius:20px;padding:5px 14px;font-size:13px;color:#cc0000;text-decoration:none;margin:4px;\"\u003eWOC54EC0HS20\u003c\/a\u003e\n  \u003ca href=\"\/pages\/whirlpool-oven-woc54ec0hb20-parts\" style=\"display:inline-block;border:1px solid #cc0000;border-radius:20px;padding:5px 14px;font-size:13px;color:#cc0000;text-decoration:none;margin:4px;\"\u003eWOC54EC0HB20\u003c\/a\u003e\n  \u003ca href=\"\/pages\/whirlpool-oven-mmw9730fz20-parts\" style=\"display:inline-block;border:1px solid #cc0000;border-radius:20px;padding:5px 14px;font-size:13px;color:#cc0000;text-decoration:none;margin:4px;\"\u003eMMW9730FZ20\u003c\/a\u003e\n  \u003ca href=\"\/pages\/whirlpool-oven-jmw3430lm00-parts\" style=\"display:inline-block;border:1px solid #cc0000;border-radius:20px;padding:5px 14px;font-size:13px;color:#cc0000;text-decoration:none;margin:4px;\"\u003eJMW3430LM00\u003c\/a\u003e\n  \u003ca href=\"\/pages\/whirlpool-oven-jmw3430ll00-parts\" style=\"display:inline-block;border:1px solid #cc0000;border-radius:20px;padding:5px 14px;font-size:13px;color:#cc0000;text-decoration:none;margin:4px;\"\u003eJMW3430LL00\u003c\/a\u003e\n  \u003ca href=\"\/pages\/whirlpool-oven-jmw2430lm00-parts\" style=\"display:inline-block;border:1px solid #cc0000;border-radius:20px;padding:5px 14px;font-size:13px;color:#cc0000;text-decoration:none;margin:4px;\"\u003eJMW2430LM00\u003c\/a\u003e\n  \u003ca href=\"\/pages\/whirlpool-oven-jmw2430ll00-parts\" style=\"display:inline-block;border:1px solid #cc0000;border-radius:20px;padding:5px 14px;font-size:13px;color:#cc0000;text-decoration:none;margin:4px;\"\u003eJMW2430LL00\u003c\/a\u003e\n  \u003ca href=\"\/pages\/whirlpool-oven-jmw2427lm00-parts\" style=\"display:inline-block;border:1px solid #cc0000;border-radius:20px;padding:5px 14px;font-size:13px;color:#cc0000;text-decoration:none;margin:4px;\"\u003eJMW2427LM00\u003c\/a\u003e\n  \u003ca href=\"\/pages\/whirlpool-oven-jmw2427ll00-parts\" style=\"display:inline-block;border:1px solid #cc0000;border-radius:20px;padding:5px 14px;font-size:13px;color:#cc0000;text-decoration:none;margin:4px;\"\u003eJMW2427LL00\u003c\/a\u003e\n\u003c\/div\u003e","brand":"Whirlpool Microwave Parts","offers":[{"title":"OEM","offer_id":51086570160417,"sku":"W11578579","price":187.95,"currency_code":"CAD","in_stock":true},{"title":"Used","offer_id":51086570193185,"sku":"W11578579","price":75.95,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/Whirlpool_Microwave_Inverter_W11578579_Fix_Microwave_That_Won_t_Heat_or_Has_No_Power.png?v=1782787421","url":"https:\/\/xpartsupply.com\/products\/whirlpool-microwave-inverter-w11578579","provider":"XPart Supply Ltd.","version":"1.0","type":"link"}