I have the star burner model, w/ extra-low simmer. The center burner will not light at all by itself. The right rear burner will self-ignite if you turn it to low, and then slowly rotate the knob clockwise to about half way. It will turn off on low & not stay on at all. (Note extra-lo burners are to the left on this model). I've taken the top down, cleaning the burner caps and the ignitors - using q-tips and ammonia on the ignitor caps. Also, the red light indicator has fallen thru (Again!) and I would like to fix that, as well. I cannot afford to lose time from work to meet the repairman for these periodic, but chronic problems. Is there any of this I can do myself & how?

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.