I can't get my outdoor radio controlled clock to keep the correct time. The clock was a gift and I think it came from Sam's Club. The radio controlled quartz system is made by Shontek and the model is DM2720 WWVB. I've searched the web to try to find a manual but have had no luck. I do remember that there was a procedure involved above and beyond just putting a battery in it, but can't remember what it was. Any assistance would be greatly appreciated.
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Remove ALL batteries in transmitter AND clock.
Insert new batteries in outdoor transmitter.
Insert new batteries in the (receiver) clock. Wait until outdoor temperature is received AND displayed on clock BEFORE setting time/date/etc.
My clock display of the outdoor temp is only blinking and not display the the temp. I have the senser put in in outdoor window. The senser shoes the temp but is not carried over to the clock. Ive put in new batteries and have the senser in the correct distence from eachother. Why is the clock contunue blinking outdoor temp.?
Look at the bottom right of the back of the clock and find the "M Set" button. Simply hold it down and the clock will move (very slowly). When it gets to the correct time, let go of the button. After that, the radio controlled shoul dcontrol should correct any minor differences in time.
This is a problem with either the a/c power or the Clock/Radio's internal timing crystal circuitry. The radio depends on the 60 cycle power source as the timing device. If this power is irregular or uneven in its delivery it can cause the timing circuits to lose or gain time. The Clock/Radio has a frequency tuned crystal that operates like the second hand on a clock. When the calibration for whatever reason is lost the crystal will not be able to perform the timing function correctly. The reason this does not happen in all Clock/Radios is that they usually have correction circuits. These circuits keep the crystal from drifting out of calibration during operation. Because of the low production cost of these Clock/Radios, the quality control is almost non existent. The components are variable and sometimes they do not stay within specifications. This problem is usually handled by quality control departments in the manufacturers facilities. They usually test a certain amount of the production run to make sure it meets specification. In higher priced electronics these test are on going during the production run. In lower cost electronics these tests for quality control are usually done before the production run. This is to choose the best and most reliable components for the price level of the product in production. What this means to you, is that the quality of the components and quality control of the production runs are based on cost efficiency to the manufacturer. This is the reason for these type of efficiency variables in the products. The customer support telephone number for Emerson is 1-800-898-9020 between the hours of 9am-5pm CT. Give them the make and model number of the Clock/Radio and ask them for assistance with your problem. I hope this information helps you under the problem and reason these problems can occur in the products. Thank you for using FixYa and have a nice day.
This is a problem with the clocks tuning crystal. Digital clocks have a crystal that is tuned to run at a certain frequency to keep the clock working correctly. These clocks have a problem with that crystal keeping the frequency locked at the correct working frequency. This problem will sometimes cause the clocks to run fast due to a running frequency higher than the regulated frequency and sometime slow due to a running frequency running lower than the regulated frequency. The only way to fix this problem is to either adjust the crystals frequency to the correct frequency and lock it. Or change the crystal. Both these types of service require tools and test equipment to fix the problem. This is usually best handled by a service center. The Emerson customer support telephone number is 1-800-898-9020. Give them the make and model number of your clock radio and ask them for assistance. I hope this information helps you with your problem.
Slide the switch with a lock, wake 1, wake 2 and clock to the clock position. Using the backwards and forwards buttons get time to the correct time. When correct time is reached, slide the switch to the lock position. Time will now be set.
Manual can be found in PDF form from RCA here: http://support.rcaaudiovideo.com/Downloads.ashx?prodid=56&mediaid=620&force=true&file=products/RP5430/media/RP5430_UMEN.pdf