Question about Intermatic Inc. ST01C Digital In-Wall Timer

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The screen says "loBat" and I have replaced the batteries 3 times and it still says the same. What is going on?

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Unfortunately, the Battery Presence & Charge detection circuit, has failed this is common on devices like this. What has happened, usually, is the a series resistor that has gone open circuit, this stops the detection circuit fro properly "Seeing" the battery. This the symptoms you have.
If you were skilled in soldering and can use a meter, you should be able to find the Open Circuit resistor, and replace it. However I wonder if it would be worth the effort? As it is also possible that this is just an underlying symptom of a larger problem as it usually is.

Posted on Aug 28, 2010

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1 Answer

Cmos battery error failure


The CMOS (BIOS) battery keeps the computer'a comfiguration and the Date & Time settings in the CMOS (BIOS) chip in its memory. When the CMOS (BIOS) battery is flat these configuration information is lost.
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1 Answer

Intermatic ST01C is a wall timer for my outside lights. The screen flashes "lobAt" and will not operate properly. I have replaced the batteries 3 times, and no result in stopping the signal. help please


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http://waterheatertimer.org/Intermatic-st01c.pdf

1) Manual shows troubleshooting steps. Since ST01C is battery operated, it will not work on loads farther than 100 feet away. If a wire is buried underground, this can interfere with operation. Other electrical devices can interfere with operation. Check for interference issues.

2) Try reprogramming timer
To program the ST01C:
http://waterheatertimer.org/ST01C-program.html

3) ST01C has 1 year warranty + troubleshooting steps in manual, implying short life expectancy. Similar EJ500 has troubleshooting + 1 year warranty. Similar Intermatic EI600 battery-powered has troubleshooting + 5 year warranty. Each offers 40 programs per week.

3) Other in-wall programmable timers offer 7 on and 7 off events per week. Clock operates on 120V instead of battery. Ttroubleshooting is: reprogram.
http://waterheatertimer.org/Programmable.html#progr

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1 Answer

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I hope this helps! :)

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1 Answer

Our high school has about 40 calculators which have stopped working. We put in new AAA batteries and also replaced the disc battery. In most cases, the screen just won't go on. Any suggestions?


Hello,
Maybe it is time for your school to graduate to the TI'Nspire technology. Just a joke. OK, it is possible that the screen is too light, and you will have to increase contrast. Here how you do it.
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I read that you changed the main batteries and the backup batteries. It should not be done all at one go: Calculator must at all time have either the backup in, or the main batteries in. You may lose informations if you pull them all out.
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the following data is from the hardware maintenance manual for the thinkpad 600 series and is readily available from http://www.lenovo.com/support


Symptom or error FRU or action, in
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161
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