Question about Marantz SR-19 Receiver

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Memory back up

Even after a very brief loss of ac power or if the reciever is turned off with the off button( not on stand by) I lose all my settings a must go about reseting stations,surround sound settings etc. The manual ststes they should be preserved for about 2 weeks by internal memory. Th av reciever works fine in every other way.
Thanks for any help. Bill

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  • 624 Answers

There is a capacitor in the circuit for the micro. This particular capacitor is for saving the memory settings and it is most likely defective now. You will need to take it to a repair center and have them check it out for you. Replacing this capacitor should not be too expensive, but you never know how some shops are going to charge you.

I do not have the schematics for this model of Marantz or I would just tell you what capacitor it is. This capacitor acts like a battery in the unit. It only requires a very small amount of power to maintain memory settings and these capacitors work very well for that purpose. Many times you can find them on the display board. But, once again, unless you have experience working with these type of units you should not try it yourself. It is very easy to damage electronics if you do not know what you are doing.

Let me know if you need any more help.

Dave

Posted on Jul 25, 2008

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CDX-GT4301P sony car radio loses station/settings memory intermittently.


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"Power switch" eliminates all power input and most likely the memory in the unit too just like your stating in your situation.
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Hi

Make sure the AC cord is not loose or disconnected. Check to ensure the cord is firmly plugged into the outlet at one end, and firmly connected to your television at the other end. The AC cord connects to the television about midway across the back of the set, near the bottom of the back panel. The hole for the AC connection is shaped like a figure eight. Try powering up the TV with the cords firmly connected.

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Check the circuit board. If your set still won't turn on and you hear a clicking noise when you plug it in, you most likely have a defective circuit board.

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Try turning off and unplugging the machine for a couple of minutes, this should clear the page memory, then power it up and see where you stand.

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Did you try this....

In the event of a power outage, the RV-8 will display a BROWN
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POWER MANAGEMENT ON, OFF

"Setup" >> "Power Management"

Opens the POWER MANAGEMENT menu, which is used to automatically
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When set to OFF, the RV-8 will attempt to function during a
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When the RV-8 is in standby mode, pressing the button turns the
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2. Attempt to power on the RV-8 with the front-panel Standby
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1 Answer

Input setting


When you turn off the set, are you turning it off by running the power through a cable or satellite box? If you are shutting down the set from the AC mains side the set can lose all of its user set-up. In most TV models, the main power supply must have the AC mains connected.

The power supply goes in to a standby mode when the TV is turned off by its own power switch (not by the AC mains). The supply puts out enough power to keep the uPC and the user memory active.

If the set is properly turned off and it is losing its user set-up, it is possible that there is a fault in part of the uPC circuits. Depending on the model of set, there may be a lithium battery, or memory capacitor, or an EEPROM for keeping the user set-up memory.

Jerry G.

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Wrong date on the radio.


RESETTING THE CLOCK AFTER A TOTAL MEMORY LOSS

If you do not change the built in lithium battery within a reasonable period of time after you see the ‘flashing’ LOW BATT. warning indicator, the lithium battery may become exhausted and will no longer be able to supply back up power to the SmartSet internal computer.

If the unit is disconnected from the AC outlet after the battery is exhausted, or if a power interruption occurs, the SmartSet memory will be lost and the clock will need to be reset when the power is restored. Be sure to install a fresh lithium battery before you reset the clock, otherwise the clock will need to be reset each time the power is interrupted.

If the lithium battery is exhausted and you experience an interruption in the AC power supply, the clock will reset itself to its initial default setting when the power is restored.

The initial default setting is “12:00 AM, Saturday, January 1
(1 1), 2005”.

If you notice that the time on your SmartSet clock radio is completely incorrect, and the day indicator is also wrong, press the MONTH/DATE button to see the date. If the date display is showing “1 1” (January 1 ), you probably experienced
a total memory loss. To reset the clock after a total memory loss, proceed as follows:

1.) Install a new CR2430 lithium battery in the battery compartment.

2.) Connect the radio to your AC outlet and let the clock set itself.

3.) Depress the MONTH/DATE and TIME buttons together. The display will change from ‘time’ to ‘year’. While holding the MONTH/DATE and TIME buttons, press the UP button to
set the display to the correct year, then release the buttons.

4.) Depress the MONTH/DATE button. The display will change from ‘time’ to 'month/date’ (mm/dd). While holding the MONTH/DATE button, press the UP button to set the display
to the correct month and date. The Day indicator will change automatically as you adjust the month/date settings. When the correct month and date appear on the display, release the buttons.

5.) Depress the TIME button and the UP button to set the display to the correct time. Be sure to confirm that you have set the time correctly to ‘AM’ or ‘PM’ by observing the AM indicator.

6.) After you set the time, reconfirm that the Day, and Month/Date displays are still correct. Make final adjustments if necessary.

The SmartSet clock memory is now reset and the new lithium battery will maintain it for the next 5 to 8 years, depending on the number and duration of the power outages you experience.

IMPORTANT NOTE:
After resetting the clock, don’t forget to reset your wake up times, and alarm mode settings, and sleep timer settings as well.

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