2 out of 4 burners working, left hand side with rapid burner not staying alight . Gas coming through, lights but doea not stay lighted. SMEG 60cm Cooktop

After stove is turned off, the light stays on if burner still warm. If the burner never came on, then it needs to be replaced with new one.

You could have a shorted burner, if it is not then you may have gotten a bad part.

always unplug electricity before attempting to repair on any electrical appliance

Center burner won't light: If there is a bright spark (check all ignitor points at night with the lights out and look for consistent brightness of the sparks) then it's likely that the burner slots are dirty or the air/gas mix is wrong. If you can light with a match, but the spark won't light, then go for cleaning the entire burner assembly thoroughly with a brass bristle brush (available at most automotive stores). The proper air/gas mix has to flow over the spark to ignite. Weak spark, improper air/gas or misdirected gas flow that misses the spark can all cause this issue.

RR burner lights only on low setting. Again, check the air gas mix and clean all parts. Something like a small spider web inside the air mix chamber (area between the orifice and the burner can cause this and is difficult to see. Disassemble, clean thoroughly, reassemble and test. Extra low simmer burners (two on the left side) use their own control module with electric gas valves and variable electric control switches. The burner works on low, so these are not likely the problem.

Most folks want to find a bad part, and that can happen, but stove tops get dirty and cleaning usually helps. If not, you have a clean top to work on.

The indicator lens and/or the retainer are either broken or the retainer is missing. It's best to replace these as they are not expensive. When the top is off while cleaning is an perfect time to replace the lens.

It's possible that one of the burners stay on for a long time, which cause one of the wires to overheat, breaking the connection and touching the body of the unit, please turn the breaker off and check for a loose connection, replace the wiring if you feel confortable doing it yourself or contact a technician.

Take the burners out, then take a needle and stick in the small hole where the gas comes thru.

Wow this problem sounds exactly like my landlords problem only he is just now saying he is learning of the problem. You even have the age of the stove correct.

It sounds like the round burner orifices are dirty. Remove the round orifices and clean in warm soapy water, using a plastic scrubber or toothbrush to remove and dirt and residue around the sides of the burner. Do the same on the little electrode that protrudes at some position around the burner orifice seat.

The system works by the spark ignition module knowing a gas knob is open, and sensing for a flame by ionization within the exhaust gases of the flame. If things are dirty, then the module cannot read the ionization and shuts down the burner, and will also cause the spark to continue.

Also make sure all the burner orifices are properly seated in their holder. If not, the same thing will happen.

Sounds like the electric sending unit for the right burners is not working. Do you hear the cliking noise on the right side when you turn the knob to LITE? If not then you need to replace the electric sending unit, they are located under the knobs, they are a smal square box that goes on the switch valve rod, they have tow wires on the side, just unplug and lift, and look for greasse or anything that might interrup contact, you might be able to use the same ones, or just replace with new ones....Good Luck
Eddie Rentas
Tupper LAke NY

I would try cleaning the burners. You can purchase cleaning brushes made specifically for this purpose and they work like a charm.

lhs burner - problem is probably thermo-couple. this is a safety device which prevents gas escape if flame blows out. rhs burner - you do not say if it can be lit by a match. if so then it is a problem with the electrode or the wire to it chaffed thro. if can't be lit by a match, then a problem with the gas valve which is unusual not a diy fix unless you are experienced