I have a bosch cooktop 5 burner and one burner lites its very dim and then goes out

https://www.youtube.com/watch?v=0ZYXK8450mM

Check out this link .
good luck

If The Burner lights and stays lit as long as the knob is depressed, but goes out after the knob is released then there is a failure with the thermocoupler or the valve itself. The thermocoupler can be tested once removed from the cooktop - as follows
Heat the tip on the thermocoupler with a match or lighter and measure the electrical connection (other end) with a voltmeter - it should read about 15 mV or slightly more with in a few seconds. If no voltage is read then the thermocoupler is faulty and should be replaced.
The valve coil can also be tested for continuity at while the unit is disassembled. If no continuity is found the valve is faulty and should be replaced
The small voltage created from heating the thermocoupler energizes the coil in the valve which in turn keeps the gas turned on while there is heat at the thermocoupler.
Some units actually reignite the burner if the heat is lost and the control knob is in the on position.

Hope this helps ....

Change the igniter switch. You can buy from mfr and install yourself.

I have the same problem especially with the center burner, but now am having increasing difficulty with two other burners. Those will eventually stay lit if I depress the knob for 20 - 30 seconds. The center burner will not stay lit, even when keeping the knob depressed for 2 - 3 minutes!

Hi,
Here is a tip that I wrote to help people troubleshoot problems with their cooktops not igniting.

Cooktop Range Stove spark ignition does not work
http://www.fixya.com/support/r5649407-cooktop_range_stove_spark_ignition_not

heatman101

Hi,
Here is a tip that I wrote to give details about why your cooktop will notspark to light the burners..

Cooktop Range Stove spark ignition does not work

heatman101

b,bm

Call GE answer center 1-800-626-2000 aek for tech help. Have you Model # off your data plate ready.

If you can give me the model number I can give you 3 places and there prices. The model number should be located on the bottom of the unit.

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

Check to make sure your burner caps are aligned. I had this problem, and it turned out one of my burner caps was slightly askew. Putting it level fixed the problem.