Russell Hobbs Microwave Ovens - Page 2 - Recent Questions, Troubleshooting & Support

There are multiple possible causes for the problem. Here's a partial list: magnetron, high voltage capacitor, high voltage rectifier, power relay, inverter board (if an inverter oven), thermistor on magnetron (if so equipped), and on some units, a door switch. If you need further help, I’m available over the phone at https://www.6ya.com/expert/david_29ad5d1dd86564b0

If you wish to get some details; check the site linked here... http://electro-medical.blogspot.com/

It is likely that the heater element is faulty. These elements can fail with a ground fault. You should get a quote for repair as it may be more economical to buy a new one, and you get a warranty too. . .

First thing you can do is fix it by sanding it and feather edging the chipped paint and then prime it and let it sit for maybe 4 hours and lightly sand it with really fine wet 320 grit sand paper or finer. You should use paint that is gloss and heat resistant like you can use melamine.
Or just buy another one.

I found the manual for your microwave here: Download manual

How to change the light bulb on russell hobbs gts23 microwave eHow UK