LOL - GB ... yes the manual does talk about brown rice. The link to the manual is in my previous post where I said, "RTFM - Read The Furnished Manual
The rice cooker "cup" = 3/4 standard mesuring cup (page 4).
The rice might need to be rinsed before cooking (page 3).
"If the rice is too wet, allow it to remain on Warm for 15 to 20 minutes
before serving. If it is too chewy, add up to ¼ cup more liquid and let stay on Warm until liquid is absorbed (about 15 to 20 minutes)." (page 4)
The brown rice directions are on page 6:
(2-4 servings): 1 "rice cooker cup" brown rice and 1-3/4 "standard liquid measuring cup" liquid.
(3-5 servings): 1-1/2 "rice cooker cup" brown rice and 2-1/2 "standard liquid measuring cup" liquid.
srm - try measuring out 1 "rice cooker meauring cup" of rice, then wash it (see page 3) and add to the pot along with 1-3/4 "standard liquid mesuring cup" water - then follow the rest of the instructions and see how that goes. And, pay attention to the instructions at the top of that page:
"For grains or brown and specialty rices, use the chart provided below. Note that you should not prepare these in amounts smaller or larger than stated in the chart.
All rice/grain is measured in the rice cooker cup. All water/liquid is measured in a standard liquid measuring cup."
If that doesn't work - try making white rice ... if that still doesn't work then you may have a bad thermostat in your cooker.