Question about RCA RP5420 Clock Radio

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Alternating time and radio setting

This clock radio display keeps alternating between the time and radio frequency setting. I do not use the radio to wake me up...only the chime.
Can anyone tell me how to stop the alternating and only show the time?
Thanks,

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  • Anonymous May 27, 2008

    I have model RP5435 that is doing the same thing. I've done the same thing. . . turn the radio on then turn off. It seems to do it more in day time than night time.

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When the display was doing this to me tonight (I just got the thing, so fat lot I know, huh? I try), I pushed the "OFF" button 2 or 3 times. The OFF button is on the top of the clock, next to all of the alarm buttons. It quit alternating for me.

Posted on Apr 03, 2008

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My GE Clock radio doesn't keep time. Radio is working. Have I pressed a wrong button ??


There are basically three types of electronic clock.
Quite old-fashioned are those that use the frequency of the mains electricity it is plugged into as a means of approximately keeping time. For practical purposes this type is more accurate than most mechanical types but may lose or gain a little and need adjusting from time-to-time.
If this type becomes unreliable there is nothing the user can do about it and an engineer would be needed or perhaps the garbage or recycling would be a better place.

The second type is the now very common quartz type where the clock circuitry keeps time by being triggered by a very accurate quartz crystal oscillator.
These types are generally so accurate it is worth providing battery back-up in case of power failure as well as preserving alarm and reminder settings.
If this type becomes inaccurate it indicates a problem with the circuitry and again recycling is probably the most practical option, though accumulated damp and dust inside can affect the delicate circuitry which might be restored to accuracy after a thorough internal clean.
I once had similar trouble with my clock radio which was caused in this instance by me forgetting how to operate it correctly. Spending a half-hour playing around with it refreshed my memory so in future I will remember when I have set the alarm to return the display to the clock.

The third type of clock is the radio controlled type that is set and keeps time by receiving a radio signal from a national atomic clock. They can do strange or unusual things if the signal is not being received properly or the clock is faulty but there is usually a function for setting the time manually though in my limited experience these aren't clocks for everyone and they aren't suitable for every location.
Good luck!

Feb 08, 2015 | GE Clock Radios

1 Answer

Losses Time


what frequency does Jordon use on their power is it 50 hz are the clocks 60 Hz designed power usage.
may need a device to convert 50hz to 60hz
search google for
50 hz to 60hz frequency converter

Apr 15, 2014 | Sanyo R-6800 2-IN-1 ALARM CLOCK AND RADIO...

1 Answer

Directions for Resetting the Daylight Savings Time (DST) Start & End Dates on the Emerson Research Smartset Dual Alarm Clock Radio on CKS1850


Unfortunately, you can't reset the firmware of the clock for those built before Jan 2006; you can work-around the issue. You will need to change time zones for the few weeks between the current daylight savings start and end dates and the ones that were built into the clock. For details see: http://www.emersonradio.com/dst.htm ; click on the link for Group 1.

If the unit was built before Jan 2006 (the serial number will start with a value less than 6), switch the time zone to the next one further east on the second Sunday of March, then set it back to your correct time zone on the first Sunday of April. Repeat this on the last Sunday of October and the first Sunday of November. (If you are in the Eastern time zone (zone 2), set the switch to zone 1.)

If the unit was built between Jan 2006 and July 2006 (serial numbers that start 601 to 606), then you can change the start and end dates for DST. See: http://www.emersonradio.com/dst.htm then choose the Group 2 link. Press and hold the Alarm 1 button then press the Month/Date or Calendar button. After three seconds the unit will display the start date for daylight savings. Press and hold the Alarm 1 and Month/Date or Calendar buttons. When the display is flashng (within 5 seconds from the press and hold step), press the Down or Set button (depending on the SmartSet mode) three times until the display reads 3 and F2 (alternating with the date of that Sunday).

For the end date, press and hold Alarm 2 then press the Month/Date or Calendar button. Then press and hold Alarm 1 and the Month/Date or Calendar button. Again within 5 seconds, press the Up button or Set until the display shows 11 and F.

If the display stops flashing, repeat and set the new dates faster.

You'll have to repeat this is the battery is removed or replaced.

I hope this helps.

Cindy Wells

Mar 15, 2011 | Emerson SmartSet CKS1850 Clock Radio

2 Answers

Time setting


The clock will set itself at specific time set times, this is likely to be at 0200 0400 and 0600.

You will however be required to set the time zone, the switch is likely to be on the back.

INFO:
Atomic Time Synchronisation:
How does it work.
SHORT VERSION:
Radio set clocks and watches receive a 60-kilohertz, radio signal from the NIST the official timekeeper for the US and is located in Boulder, Colorado. Ft. Collins. they use atomic clocks and transmits this official time via high frequency short-wave and low frequency AM radio signals, satellite transmission, Internet, and via telephone.
 
REFERANCE LINKS:
OFFICAL TIME:
http://www.time.gov/timezone.cgi?Eastern/d/-5/java
PHOTO OF ANTANA TRANSMITTERS:
http://tf.nist.gov/stations/wwvb.htm

Jan 19, 2010 | Sharper Image Wireless Caller ID with...

1 Answer

Zenith Redi_set clock radio Z230S


Describe your problem: Depress MONTH/DATE and ALARM1 for 3 seconds and display will show DST 'start' month,week,and date.
Display will show 4F 4.1, alternately flashing

4F = April First week. 4.1 = April 1.That is the old dates for change. What we want to do is to change to the new dates. Once it is done, it will change in the new dates as it did on the
old dates..

Hold down the MONTH/DATE button for 5 seconds, and while pressing the - or down button3 times, until the display shows '3'F2.
3 is month F2 is the week.
=March 2nd week.
You have successfully change the March changeover.

Now for the November change.
Depress and hold MONTH/DATE and ALARM2 after 3 second the display will show DST 'end' month,week, and date.
First digit will be 10 =month. second digit will be L=Last week, and date, will flash alternately.
While holding down the MONTH/DATE press the + or UP button once the display will show 11 (November) and F (first week) and 1 as date alternately flashing.
You have successfully set it for the next 100 years

Apr 17, 2009 | Zenith Z230S Clock Radio

1 Answer

Teac R2 clock radio--Cannot set the clock.


Press and hold the CLOCK ADJUST button for more than 3 seconds.
"SET" and "CLK" appear alternately in the display.
Turn the MULTI JOG knob to adjust time.
Press the CLOCK ADJUST button again to finish.

Dec 29, 2008 | Teac R2 Clock Radio

1 Answer

Wrong time on Emerson Smart Set clock


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.

Nov 18, 2008 | Emerson Smartset Clock Radio

2 Answers

Won't display time. Error message 20 ne


It's not displaying 20 ne - It's asking for the time ZONE . . .

Jun 20, 2008 | Emerson CKA1000 Clock Radio

1 Answer

Clock runaway


You are right on, the clock is using the 50 hertz to keep time expecting it too be 60 hertz.

Dec 27, 2007 | GE RP4842 Clock Radio

2 Answers

Daylight savings time adjustment


Go to:
http://www.emersonelectronics.ca/emerson/en/product/details/VLJT600
or
http://www.emersonelectronics.ca/emerson/en/category/list/694

The solution appears to be common for all recent Emerson SmartSet(tm) radios (BTW it's not the clock fault, it's the law).

Remarkably Emerson foresaw this, so here we go.

Short version (may require three hands :-) )

DST start:
Press and hold MONTH/DATE and ALARM 1 buttons for at least 3 seconds until the display changes to something like "4 F" (Fourth month, First week) alternating with something like "4. 1" (April 1st, for 2007) or "4. 6" (April 6th, for 2008). While holding down the MONTH/DATE and ALARM 1 buttons, now press the DOWN or "-" Set button (3 times) until "3F2" shows (Third month, second week) alternating with something like "3.11) (March 11th, for 2007) or "3. 9" (March 9th, for 2008). Let go of all buttons and we are now half done.

DST end:
Press and hold MONTH/DATE and ALARM 2 buttons for at least 3 seconds until the display changes to something like "10 L" (Tenth month, Last week) alternating with something like "10.28" (October 28th, for 2007) or "10.26" (October 26th, for 2008). While holding down the MONTH/DATE and ALARM 2 buttons, now press the UP or "+" Set button (1 time) until "11 F" shows (Eleventh month, first week) alternating with something like "11. 4" (November 4th, for 2007) or "11. 2" (November 2nd, for 2008). Let go of all buttons and we are now done.


This should remain until either the lithium battery fails or Congress undoes its work.


BTW the Emerson addendum has a history error. The time change in the first Sunday in April and the last Sunday in October did not start in 1966, but in 1987. Before that starting in 1966 the standard was set at the last Sunday in April and the last Sunday in October. Except for 1974, when it was January 6th, 1974 (DST start) and October 27th, 1974 (DST end) and in 1975 when it was February 23rd, 1975 (DST start) and October 26th, 1975 (DST end). Before 1966, state and local governments had many different rules. Source: http://webexhibits.org/daylightsaving/e.html

Oct 28, 2007 | Emerson CKS3029 Clock Radio

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