Mr coffee model isx43 12 cup

Have you tried cleaning your coffee maker? If not just fill half of the carafe with white vinegar and let it brew. Keep basket in during cleaning but no filter needed. After running the vinegar through the brew cycle, fill the carafe with plain water and run fresh water through about 3 to 4 times. I do this every 4 to 6 months. I have a light on my coffee maker that lets me know when I need to clean it. I hope this helps.

Keurig claims that it brews coffee at 192 degrees.
I don't believe that! Because I have tested the temperature of brewed coffee from different Keurig machines several times and it usually lies in the range of 160 to 170 degrees.
Check out this article for tips to get a hotter cup of coffee from Keurig

Have you tried first just running distilled water through it, then again with spring water and then test with enough coffee for 1 cup to see how the cofee taste then. Also you may want to use distilled or spring water when making that one cup of cofee to test.

Hi Val: There are a number of 12 cup Mr Coffee models. Instruction Manuals in PDF can be found listed here:

http://www.mrcoffee.com/InstructionManuals.aspx

Thank you for using FixYa!

There may be grounds stuck in the spring loaded gadget next to the pot's pour spout - Remove all interior parts and rinse under water.

3 beeps means plugged water line. Take off the bottom of the coffee maker with a small phillips head screwdriver. Use pliers (I used needle nose type) to remove the wire clamps holding on the silicone water tubes to the hot plate. In my case, the water line from the reservoir to the plate was clogged with something I couldn't see until I blew on the hose and it popped out, could have been scale, grounds etc Clean with vinegar. Back in service!

you have an internal wiring problem, take it back and get a new one....siever

Mine just started to do the exact same thing. So I decided to clean it using the "Clean" program and just water. I put the brewer through the cleaning program 3 times - each time it would brew water from 12 cups to 8 cups, I'd tap the brewer on the countertop, it would brew from 8 cups to 4 cups, tap it again, and it would brew the remaining cups. So, I called the Mr. Coffee help line (800-672-6333). The most-likely problem is that the hose is no longer attached in the water reservoir. The help line suggested that I take it in to a service center. I live in Urbana, IL and the closest service center is in Oak Lawn, IL - 2 hours away from me!!
Here is my solution:
1) Buy another coffee brewer.
or
2) Smash your current Mr. Coffee brewer into a million pieces (this relieves stress) and go buy another coffee brewer (probably stay away from Mr. Coffee products).
Hope this helps.
Frustrated in Urbana

I HAD A COFFEE MAKER DO THIS AND I TRYED TO GET PARTS FROM THE MANUFACTURER AND THEY WANTED ME TO SEND IT BACK TO THE FOR REPAIRS THEY DON'T WANT THE LIABILITY OF SOME ONE GETTING HURT . BY THE TIME I SHIP THE THING AND PAY FOR PARTS AND LABOR I CAN BUY TWO NEW COFFEE MAKERS. YOU MAKE THE CALL

17 bucks. this happens to all these. throw it away and get a new one at walmart for 17 bucks. that's what I did.