{"product_id":"f6645ba00gp-microwave-inverter-main-board","title":"LG Microwave Inverter Board F6645BA00GP — Restore Heating \u0026 Cooking 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\/616OTVgCTVL._AC_SX679.jpg?v=1781542058') 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\u003c!-- HERO BANNER --\u003e\n\u003cdiv class=\"hero-banner\"\u003e\n\u003cdiv class=\"label\"\u003eOEM REPLACEMENT PART\u003c\/div\u003e\n\u003ch2\u003eLG Microwave Inverter Board F6645BA00GP — Restore Heating \u0026amp; Cooking Power\u003c\/h2\u003e\n\u003cdiv class=\"hero-specs\"\u003e\n\u003cspan\u003ePart# F6645BA00GP\u003c\/span\u003e \u003cspan\u003eReplaces F6645BA00AP – FP\u003c\/span\u003e \u003cspan\u003eFits LG\u003c\/span\u003e \u003cspan\u003eLMV \/ LMHM \/ LMVM Series\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- H1 --\u003e\n\u003ch1\u003eLG Microwave Not Heating or Completely Dead? Inverter Board F6645BA00GP – Fix No-Heat Failures Fast\u003c\/h1\u003e\n\u003c!-- INTRO --\u003e\n\u003cp\u003e\u003cstrong\u003eIf your LG microwave runs, hums, and shows a display but produces zero heat — or is completely dead with no response — the inverter main board has almost certainly failed.\u003c\/strong\u003e In most LG over-the-range and countertop microwaves, the inverter board controls magnetron power output and is the single most common point of failure in the cooking circuit. When it fails, the microwave may appear to run a cycle normally while producing no heat whatsoever, or it may shut down entirely with no display or response. \u003cstrong\u003e⚡ Leading failure point in LG LMV and LMHM series microwaves.\u003c\/strong\u003e \u003cstrong\u003ePart F6645BA00GP\u003c\/strong\u003e is the genuine OEM replacement that restores full magnetron output and cooking power immediately.\u003c\/p\u003e\n\u003c!-- IS THIS THE RIGHT PART --\u003e\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 lights up and turntable rotates\u003c\/li\u003e\n\u003cli\u003e✔ Door closes and latches properly — door switches are functional\u003c\/li\u003e\n\u003cli\u003e✔ Outlet and circuit breaker confirmed OK — power supply is fine\u003c\/li\u003e\n\u003cli\u003e✔ ONLY problem is no heat output, or unit is completely dead with no display\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\u003c!-- COMMON SYMPTOMS --\u003e\n\u003ch3\u003e🔧 Common Symptoms\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMicrowave runs full cycle but food comes out cold — zero heat produced\u003c\/li\u003e\n\u003cli\u003eUnit is completely dead — no display, no response to any button\u003c\/li\u003e\n\u003cli\u003eLoud hum during operation but magnetron never fires\u003c\/li\u003e\n\u003cli\u003eMicrowave trips the breaker or blows a fuse repeatedly\u003c\/li\u003e\n\u003cli\u003eSparking or burning smell from the inverter area (rear of unit)\u003c\/li\u003e\n\u003cli\u003eDisplay works and timer counts down but no cooking occurs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e✔ If these symptoms match, the inverter board is the most likely failed component in the system.\u003c\/p\u003e\n\u003cp\u003e✔ In most cases, replacing this inverter board restores full cooking power immediately.\u003c\/p\u003e\n\u003c!-- PART DETAILS --\u003e\n\u003ch3\u003e📦 Part Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e F6645BA00GP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Inverter Main PCB \/ Control Board — Genuine OEM LG\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaces:\u003c\/strong\u003e F6645BA00AP, F6645BA00BP, F6645BA00CP, F6645BA00DP, F6645BA00EP, F6645BA00FP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrands:\u003c\/strong\u003e LG\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAppliance Type:\u003c\/strong\u003e Over-the-Range \u0026amp; Countertop Microwave (LMV, LMHM, LMVM Series)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- UPSELL --\u003e\n\u003cdiv class=\"upsell-box\"\u003e\n\u003cstrong\u003e⚠️ Recommended While Repairing:\u003c\/strong\u003e\u003cbr\u003eInspect the \u003cstrong\u003edoor interlock switch assembly\u003c\/strong\u003e while the unit is open — a failed door switch is the #1 cause of inverter board burnout in LG microwaves. If the door switch fails in the closed position, it allows the magnetron to run with the door open, which overloads and destroys the inverter board. Replacing the board without checking the door switches risks burning out the new board within weeks. Check all three interlock switches before reassembly.\u003c\/div\u003e\n\u003c!-- INSTALLATION --\u003e\n\u003ch3\u003e⚙️ Installation\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSkill Level: Advanced — 45 to 60 minutes. High-voltage capacitor discharge required.\u003c\/strong\u003e Disconnect power and discharge the high-voltage capacitor before touching any internal components — microwave capacitors store lethal charge even when unplugged. Remove the outer cabinet (typically 3–5 screws on the rear), locate the inverter board mounted near the magnetron, disconnect the harness connectors and high-voltage leads, swap in the new board, and reassemble in reverse. Do not skip the capacitor discharge step.\u003c\/p\u003e\n\u003c!-- COMPATIBLE MODELS --\u003e\n\u003ch3\u003e✓ Compatible Models\u003c\/h3\u003e\n\u003cp\u003eConfirmed compatible with LMV2031ST, LMV2031BD, LMV2031SW, LMHM2237ST, LMVM2033ST, LMV1762ST, LMV1764ST, LMV1831ST, LMV2031SB, plus additional LG LMV and LMHM series models. \u003ca href=\"\/pages\/contact\"\u003eContact us to verify your model number\u003c\/a\u003e before ordering.\u003c\/p\u003e\n\u003c!-- ⚠️ BIDIR MODEL HUB LINKS — FLAGGED: No LG microwave model hub pages found in store. Add \/pages\/lg-microwave-[model]-parts links manually once hub pages are created. --\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c!-- PRO TIP --\u003e\n\u003ch3\u003e💡 Pro Tip\u003c\/h3\u003e\n\u003cdiv class=\"pro-tip\"\u003e\n\u003cstrong\u003eDischarge the Capacitor First — Every Time:\u003c\/strong\u003e\u003cbr\u003eThe high-voltage capacitor in LG microwaves can hold a charge of up to 2,100V for hours after the unit is unplugged. Before touching the inverter board or any internal component, discharge the capacitor using an insulated screwdriver bridged across both terminals. This is not optional — skipping this step has caused fatalities. Once discharged, the repair is straightforward. If you're not comfortable with this step, this is one job worth handing to a certified appliance technician.\u003c\/div\u003e\n\u003cp\u003e\u003cimg alt=\"LG Microwave Inverter Board F6645BA00GP\" style=\"width: 600px; max-width: 100%; display: block; margin-top: 24px;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/616OTVgCTVL._AC_SX679.jpg?v=1781542058\"\u003e\u003c\/p\u003e","brand":"XPart Supply Ltd.","offers":[{"title":"OEM","offer_id":52851066241313,"sku":"F6645BA00GP","price":99.98,"currency_code":"CAD","in_stock":false},{"title":"Used","offer_id":52851066274081,"sku":"F6645BA00GP","price":39.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/https_xpartsupply.com_products_f6645ba00gp-microwave-inverter-main-board_utm_source_copyToPasteBoard_utm_medium_product-links_utm_content_web.png?v=1781549875","url":"https:\/\/xpartsupply.com\/products\/f6645ba00gp-microwave-inverter-main-board","provider":"XPart Supply Ltd.","version":"1.0","type":"link"}