Question about Samsung MT1066SS Convection/Microwave Oven

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Microwave keypad locks/err 3

I own a samsung MT1066SB microwave oven. I plug it in and it works momentarily then err 3 pops up. After the message appears the keypad locks and the only way to unlock it is to unplug the microwave.

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  • William Miller
    William Miller May 11, 2010

    It sounds like a shorted keypad, but that normally results in an error code of "- SE -"in a Samsung. I did not find error code "err 3" in the owner's manual or the service repair manual. Is it still under warranty? How old is it?

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SOURCE: Samsung Bake & Toast Microwave MT1066SB starts heating but shows

getting t-4 on clock display and random beeping<br /> cancelling and unplugging don't fix it<!-- from fixya rte -->

Posted on Aug 13, 2010

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HELLO.

The solution is to troubleshoot the microwave as explained below.

1 Check the power supply. Make sure the microwave is firmly plugged into a working electrical outlet and that your wall outlet is active if your home uses outlets controlled by a wall switch. Check your home's fuses or circuit breakers to ensure they have not been tripped. Without power the microwave will not respond to any input.

2 Make sure the parental lock is inactive. Some ovens, like the one shown in the image above, feature a keypad lock to prevent children playing with the controls. Most keypad locks can be cancelled by holding down a button or combination of buttons for a few seconds.

3 Make sure the door is firmly closed. Some microwave ovens will not allow any control panel input if the door is open.

4 Remove the microwave from the power, wait 10 seconds, then plug it back in. This will reset the microwave oven if there is a temporary problem with the software.

5 Press the "Stop/Cancel" button several times to cancel the current operation and return the microwave to standby mode. Re-enter your cooking instructions using the keypad as usual.

please let me know the outcome..

thanks.

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Model 565.60512000 manufactured 3/2000. there is a L besides the time. I have lost the manual so do not know how to unlock. Instead of seeming locked, I can enter cook time but then the microwave turns...


HELLO.

The problem with your microwave's touch pad needs some simple troubleshooting steps to rectify the problem.

1 Check the power supply. Make sure the microwave is firmly plugged into a working electrical outlet and that your wall outlet is active if your home uses outlets controlled by a wall switch. Check your home's fuses or circuit breakers to ensure they have not been tripped. Without power the microwave will not respond to any input.

2 Make sure the parental lock is inactive. Some ovens, like the one shown in the image above, feature a keypad lock to prevent children playing with the controls. Most keypad locks can be cancelled by holding down a button or combination of buttons for a few seconds.

3 Make sure the door is firmly closed. Some microwave ovens will not allow any control panel input if the door is open.

4 Remove the microwave from the power, wait 10 seconds, then plug it back in. This will reset the microwave oven if there is a temporary problem with the software.

5 Press the "Stop/Cancel" button several times to cancel the current operation and return the microwave to standby mode. Re-enter your cooking instructions using the keypad as usual.

Reach me for further assist.

Thanks.

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2 Answers

My microwave has power but it appears to be locked up. Any ideas?


Try unplugging the oven from the electric outlet, let it sit a few seconds, then plug it back in. This might reset the computer if it's locked up for some reason.

The oven's child-lock feature might be engaged. To turn it off, press and hold the "0" key, then press "2" and release both buttons. (From Samsung's website)

If neither of these help, the control board likely needs replacement.

Hope this helps you. Thanks for using Fixya!

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self-diagnostic routine:
1.While pressing the CANCEL keypad:
a) Open the oven door.
b) Unplug the microwave oven for 2-seconds and plug it back in.
c) Release the CANCEL keypad and close the oven door. You will see the following display.
CHART
NOTE: The humidity sensor test results will appear on the display after 8-seconds.If the tests are successful, "OK " will be displayed. If one or more of the tests fail, "ERR " will be displayed.. 2.When a keypad is pressed, a number according to the test chart will be displayed. When no keypad is pressed, a blank "?" is displayed...
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Samsung Bake & Toast Microwave MT1066SB starts heating but shows


getting t-4 on clock display and random beeping<br /> cancelling and unplugging don't fix it<!-- from fixya rte -->

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1 Answer

Microwave not working


For that model, the child lock is activated and deactivated by holding 0 then pressing 2. But that doesn't sound like your trouble. You may have a keypad which is defective, damaged or may have gotten wet or otherwise contaminated. Moisture and contamination can be caused by not using the fan when boiling on the stove top, direct spraying of cleaners, by storing the microwave in an unheated garage or shed, or infestation. I warn my customers to never spray cleaner directly onto the microwave keypad, since the liquid can get inside and "lock up" or even ruin the keypad or controller. If this happens it must dry out or be dried out, unless the moisture has gotten too deep. Apply an alcohol-based cleaner (such as the purple kind) to a cloth (since paper towels can scratch) and gently wipe it off. I suggest to my customers that they NEVER use any ammonia-based cleaner (like the blue stuff) on a microwave, since the ammonia will crack and distort polycarbonate plastics. If the keypad or controller has gotten wet, it can sometimes be carefully blown out with compressed air or heat. Another thing is to unplug the power at the mains for several seconds por minutes. Plug it back in and see if it works. A reset may do it. At power-up, the display should flash or show a text message. If not, a key may be stuck due to a foreign substance or a defective keypad. If certain keys are not working, there may be some foreign substance at the point where the green or blue plastic strip from the keypad plugs into the circuit board. To check that, it will need disassembly, and we have *critical* safety & disassembly info at our site, which is linked at our listing here on FixYa: http://tinyurl.com/yzjozk 1. Be sure the oven is disconnected from the power line while you are taking it apart. 2. The keypad connection is the green or blue translucent plastic strip that plugs into a connector near the edge of the board. 3. There are two tiny tabs (one on each side) of the connector that you can gently pull up on to unlock the connector. 4. Then the keypad strip will lift out. Clean both sides of the end of the strip with a pencil eraser, then with alcohol-based cleaner if you like, but do not use ammonia-based cleaner. Dry the end of the strip. 5. Put the keypad strip back in, making sure both sides are down fully. 6. While holding the strip down, push the connector back down to lock it. 7. Try the keys again with the door closed.

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