--- title: "Repair or replace a cooktop: the cutout, the supply and the part that failed" description: "Igniters, elements and switches are worth fixing on nearly any cooktop; a discontinued board, glass nobody stocks or a new model that will not fit the old…" url: "https://cooktoprepair.center/guides/repair-or-replace-a-cooktop/" date_modified: "2026-09-26" --- Choosing and comparing # Repair or replace a cooktop: the cutout, the supply and the part that failed Whether to repair or replace a cooktop depends first on which part failed and second on what a new one would ask of the counter and the cabinet below. Igniters, elements, switches and knobs are worth fixing at almost any age. A discontinued board, pitted or cracked glass nobody stocks, or a rusted burner box tips the balance toward replacement. By [CooktopRepair.center technical team](https://cooktoprepair.center/authors/technical-team/) Published September 26, 2026 ## At a glance. A cooktop has no oven, no door and no racks to wear out, so when one stops working it is usually a single burner, element, switch or board that has quit. The harder part of the decision often sits around the appliance: the hole in the counter and the supply in the cabinet below. Read the whole guide ### Nearly always worth fixing Spark electrodes, spark modules, coil receptacles, infinite switches, knobs Each one is a small stocked part reached from the top or from the cabinet below. ### The judgment calls A new glass top, an induction power board, a touch control panel Costly parts, still usually cheaper than a new cooktop plus a changed cutout. ### What quietly adds to a new one Recutting the countertop and upgrading the circuit Stone that must be cut again, or wire run from the panel, is rarely in the showroom figure. ### Heaviest supply of the lot A 36-inch induction cooktop: 50 amps on Monogram's list Moving from radiant to induction can mean a bigger breaker and heavier wire. In this guide 1. A cooktop is a handful of parts in a shallow box 2. Cooktop repairs sorted from lightest to heaviest 3. Why the hole in the counter can settle the question 4. What a new top asks of the cabinet below 5. Findings that usually point to a new cooktop 6. Step by step 7. Questions ## A cooktop is a handful of parts in a shallow box Lift a built-in cooktop out of its counter and what you find is a shallow metal pan with the cooking surface on top and a short list of components underneath. There is no cavity to heat, no door lock, no convection fan for an oven. That short list is good news for anyone weighing repair: when something stops working, the cause is usually one part, and most of those parts are reached from above or through the open cabinet beneath without disturbing the counter. What those parts are depends on how the top makes heat, and that is where the repair picture splits. ### Under a gas cooktop Each burner has a spark electrode, a valve behind its knob and a small switch that tells the spark module to fire. The module itself sits in the burner box and serves every burner at once, which is why one failed module can make all the burners tick or none of them. Valves, electrodes and modules are ordinary parts with long catalog lives; a technician replaces them, never the owner, because every one of them lives on the gas side. ### Under a radiant or coil top A coil cooktop has plug-in elements, the receptacles they sit in and an infinite switch per element. A radiant smooth top hides a ribbon element and a temperature limiter under each zone, and newer models swap the switches for a touch panel and a relay board. The glass is the one component that changes the arithmetic, since it is large, fragile and specific to the model. ### Under an induction top Induction replaces elements with copper coils and adds the electronics that drive them: one or more power boards, a control board behind the touch strip and a cooling fan that pulls air from the cabinet space below. Boards are the expensive items here, and a board that has left the maker's parts list is the most common reason a younger induction top gets retired. ## Cooktop repairs sorted from lightest to heaviest How alarming a symptom looks says little about what it will cost. A burner that ticks endlessly is often a wet electrode, while a cooktop that looks perfect but shows a code can need a board. Sort the problem into its band before comparing it with a new unit: 1. No part at all, the cheapest kind of visit: a tripped breaker, a control lock left on, a burner cap sitting off center, a spill still drying inside an igniter well. 2. One small stocked part, the low band: a spark electrode, a spark switch, a coil element and its receptacle, a knob, an infinite switch. 3. Moderate work: a spark module, a radiant element under the glass, a temperature limiter, an induction cooling fan, the blower of a downdraft vent. 4. The top band: a new glass top, an induction power board, a touch control panel on a premium model, a gas valve manifold, and any part the maker no longer lists. Close on a new spark module and a radiant element laid on a folded cloth beside a cooktop. ## Why the hole in the counter can settle the question A range slides into a standard gap between cabinets; a cooktop drops into a hole cut for one particular chassis. Cooktops sold as 30-inch or 36-inch vary in the exact cutout width and depth from one maker to the next, and even between a maker's own generations. A new model whose chassis is a little larger means cutting granite, quartz or tile in place, with dust, risk to the slab and a fabricator's visit. One that is a little smaller can leave a visible gap the trim does not cover. That is why repair keeps its edge on cooktops longer than on most appliances. Before you repair or replace a cooktop, have the installation instructions for any candidate model beside the measurements of the opening you already have. - Width and depth of the existing opening, measured at the counter surface, not the trim. - Distance from the front edge of the opening to the front of the counter. - Depth of the cabinet space beneath, and whether drawers or a wall oven sit under it. - Where the gas shutoff or the junction box is, so a new chassis will not land on top of it. ## What a new top asks of the cabinet below The supply under the counter is the second hidden cost. Monogram's general amperage guide lists 15 amps for its 30-, 36- and 48-inch gas cooktops, which only need power for ignition and lights, but 40 amps for a 30-inch induction cooktop and 50 amps for a 36-inch one. A household swapping a tired radiant top for induction may find the existing breaker and wire too light, which means new cable from the panel to the junction box. Changing fuel costs more still. Replacing gas with induction leaves a gas line to be capped by a qualified installer and calls for a heavy 240-volt circuit where only a small outlet stood. Going the other way means running gas to a spot that never had it. Add that work to the price of the new cooktop before setting it against a repair estimate. Source: [Monogram — Appliance amp size](https://products.geappliances.com/appliance/gea-support-search-content?contentId=17633) — Monogram lists 15 amps for 30-, 36- and 48-inch gas cooktops, 40 amps for a 30-inch induction cooktop and 50 amps for a 36-inch induction cooktop ## Findings that usually point to a new cooktop Some discoveries end the discussion quickly, whatever the age of the unit. It is also worth searching the Consumer Product Safety Commission's recall list by brand and model before paying for any repair, because a recalled cooktop is handled through the recall remedy rather than an ordinary visit. - Glass that is cracked, deeply pitted or chipped at the edge on a model whose replacement top is no longer made. - A control or power board dropped from the parts list with nothing approved in its place. - Rust eating through the burner box of a gas top, usually after years of boil-overs reaching the metal. - Heat-darkened, brittle wiring under the top, the sign of a unit that has been running hot for a long time. - Several unrelated parts failing together on an older low-end model, where the combined estimate approaches a new one. Source: [CPSC — Recalls and product safety warnings](https://www.cpsc.gov/Recalls) — The Consumer Product Safety Commission publishes product recalls that owners can search by product and brand ## Where to stop Do not lift a gas cooktop out of its cutout or loosen anything on the flexible connector underneath it; the gas side belongs to a technician, and if you smell gas, leave the house and call the gas utility from outside. Switch an electric or induction cooktop off at the breaker before anyone opens the cabinet to look at the junction box, and do not use a cooktop with cracked glass at all. Written by [CooktopRepair.center technical team](https://cooktoprepair.center/authors/technical-team/). The technicians sent out on the cooktop visits booked through this site. What they write comes from lifting tops out of countertop cutouts and working in the cabinet underneath, checked against the manufacturer's installation and use-and-care guides wherever those are published. Sources: [Monogram — Appliance amp size](https://products.geappliances.com/appliance/gea-support-search-content?contentId=17633) · [CPSC — Recalls and product safety warnings](https://www.cpsc.gov/Recalls) ## Step by step. Four steps, in the order worth doing them. 01 ### Copy the model and serial Read the rating label, which on most cooktops is under the chassis or on the burner box and visible from the cabinet below, and write both numbers down. 02 ### Rule out the free causes Check the breaker, the control lock and how each cap sits before anyone names a failed part. 03 ### Ask for the part by number Once the failed component is identified, confirm it is still listed for your exact model, especially boards, touch panels and glass. 04 ### Measure before you shop Compare any new model's cutout and electrical rating with your opening and circuit, so the replacement price includes everything it really needs. For the heart of your home. ## Questions owners ask. ### Is a twenty-year-old gas cooktop worth fixing? Often it is. Older gas tops with mechanical knobs have no board to go obsolete, and their electrodes, switches and valves stay in production for a long time. Rust through the burner box is the usual exception. ### Can a new cooktop go into my old cutout? Sometimes, but not by default. Openings differ by maker even at the same nominal width, so check the new model's installation instructions against the hole you have before buying. ### Is replacing just the glass a sensible repair? When the glass is still sold and the elements, controls and wiring are sound, yes. The glass is the largest single part, yet it keeps the cutout, the circuit and the counter untouched. ### Does switching to induction always mean new wiring? Not always, but check. Induction tops often draw more than the radiant model they replace, and the breaker, wire gauge and junction box all have to match the new unit's rating. ## The problems behind it. Each has a page of its own: what it usually means and the causes in the order worth checking. [All 17 problems](https://cooktoprepair.center/problems/) Gas, fire, broken glass or live current ### Glass Cooktop Cracked 6 causes, cheapest first Problem ### Cooktop Burner Won't Light 6 causes, cheapest first Problem ### Cooktop Element Not Heating 6 causes, cheapest first Problem ### Cooktop Error Code 6 causes, cheapest first ## When it needs a technician. The repairs on the right are where this guide ends when the checks do not settle it. ### Diagnostic visit A visit that runs every burner or zone on the cooktop, looks under it from the cabinet below and names the failed part before anything is ordered. ### Glass top replacement A new glass-ceramic surface for a radiant, induction or gas-on-glass cooktop that has cracked, chipped at the edge or been pitted beyond cleaning. ### Induction board and coil repair Induction zones that stop sensing pans, cut out, buzz or show codes, traced to the power boards, the coils, their sensors and the links to the controls. ### Spark module and gas valve repair The parts deeper in a gas cooktop: the spark module that fires the electrodes, the switches on the valve stems, the valves that meter the flame and the regulator. ## More in choosing and comparing. Gas against induction, radiant against coil, a drop-in top against a pro-style rangetop, and a downdraft against an overhead extractor — how each cooks, what it asks of the cabinet below and what it is like to keep repaired. [The whole section](https://cooktoprepair.center/guides/choosing-and-comparing/) Which cooktop suits the kitchen ### Gas, radiant or induction cooktop: heat, wiring and upkeep compared How a flame, a glowing ribbon and a magnetic coil each heat the pan, what each asks of the cabinet below, how the kitchen air changes and which parts tend to need repair. Which cooktop suits the kitchen ### Rangetop or cooktop: front knobs, a notched counter and a bigger extractor A pro-style rangetop hangs in a notched counter over a base cabinet and needs serious overhead ventilation and clearances; a drop-in cooktop sits flush and leaves more choices open. Guides ### All 18 guides Six sections, by what you are trying to find out. --- **[Read on the site: Repair or replace a cooktop: the cutout, the supply and the part that failed](https://cooktoprepair.center/guides/repair-or-replace-a-cooktop/)** **[Book a visit with CooktopRepair.center](https://cooktoprepair.center/schedule/)**