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AVR20 II When I lose power, I lose all of my tuner presets. Is there a battery backup or what?

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Re: AVR20 II

Yes, actually there is a capacitor which is dry and needs replacement. Is located on the front panel board

Posted on May 24, 2008

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No display but have sound

Try resetting the system . if this doesn't work.
"Service" is needed .
To clear the AVR's entire system memory including
tuner presets, output level settings, delay
times and speaker configuration data.

1: first put the unit in Standby by pressing the System
Power Control button
2. Next press and hold the Tone Mode button 8 for three seconds.
The unit will turn on automatically.
this will clear all the proccessor.
Note that
once you have cleared the memory in this manner,
it is necessary to re-establish all system configuration
settings and tuner presets.

Good luck
Kind Regards

Apr 19, 2015 | Harman Kardon AVR 235 Receiver

1 Answer

Programming FM tuner preset buttons

scan for the station when you have the station hold the number button you would like the station to be on in until it flashes when flashing leave and push memory or dont push memory and wait until it stops.

Dec 28, 2013 | Audio & Video Receivers

1 Answer

Where is the battery on yamaha RX-V420rds

I have the same problem, whenever power is disconnected for few seconds only memory presets are gone. The manual says just about memory backup circuits... any idea before going to dismount it and search for it?

Feb 29, 2012 | Audio & Video Receivers

1 Answer

I just bought the RCA CD/DVD home theater system RTD206. I cant figure out how to change the radio channels. Also cant figure out how to change the cd disk tracks. Does this system have a remote. Or do...

The system does have a remote (at least it should come with one if purchased new), and you need it to control pretty much everything. Here's what the manual says about the radio tuner (you can find the whole manual here) :

Manual Tuning
1. Connect the FM aerial and the AM loop antenna at the back of the unit. Rotate the AM loop for
better reception.
2. Press TUNER to enter TUNER mode and toggle between FM and AM.
3. When the FM station broadcasts Stereo sound, ST is displayed.
4. Tune a station by pressing repeatedly the TUNER+/- buttons until the desired station is found.
Alternatively, you can press and hold the same buttons down for about one second to activate
the automatic search function. In this mode the player will automatically tune frequencies until
it finds a station.
5. Repeat step 4 to tune to another radio station.

Storing radio stations
The player can store up to 30 radio stations in its memory. You can enter every single radio station
yourself or the player can store all available radio stations automatically in ascending order.
Automatic preset programming
1. Press TUNER to enter the Tuner mode.
2. Press and hold TUNER down for 3 seconds to start automatic preset programming.
Note: A weak signal can affect the "Automatic preset programming" function's efficiency. Adjust the aerial for better
reception and a more efficient search.
3. Radio frequencies will be browsed and radio stations stored automaitcally. When all the available
radio stations are stored or all 30 memory locations are full, the auto preset programming
function will stop.

Manual preset
1. Tune to a radio station (see "Manual tuning" for details).
2. Press MEMORY once to enter flashing Preset Loaction number.
3. While the Preset Location number is still flashing, input your desired preset number (1-30) using
the numeric buttons or press the CH+/- buttons, then press MEMORY to store it.

Retrieving preset stations
1. Press TUNER to enter the Tuner mode.
2. Press CH+/- to search up or down for the preset stations or directly press the numeric buttons.

As you see, you really need that remote. The same is true for disc play. While there are front panel buttons for play/stop, disc skip, and drawer open/close, you don't have any other control without the remote. Without the remote control you'll find this system won't do too much, unfortunately. If you bought this new, check the packing material before you throw it away to make sure the remote's not still somewhere in the box. They often come tucked into slots on the foam inserts.

Also, when you hook the unit to a TV, it's just using the TV as a video display device. The TV has nothing to do with any of the system's other functions.

I hope you have luck locating the remote! Thanks for using Fixya.

Jun 29, 2011 | Audio & Video Receivers

1 Answer

Is there an internal battery on the STR-DE345 Sony receiver for the pre-sets? Can it be replaced if there is. Receiver no longer holds pre-sets when there is a power outage.

There is no battery to replace to hold preset channels. The preset channels are held by a charged capacitor to maintain the nominal voltage level to the PLL (phase lock loop) tuner. The capacitor can only hold the charge for a few hours, and then it will slowly discharge - for like a short power outage.

Dec 24, 2010 | Sony STR-DE345 Receiver

2 Answers

Kenwood Receiver (KR-A46) Loses Station Presets on Power-Off

it sounds like the button cell battery inside the receiver has gone bad if you take the cover off you will see it its about the size of a quarter. You can purchase a new one for around $4. Let me know if this works or if you need assistance in taking the cover off the receiver

Apr 08, 2009 | Kenwood Audio & Video Receivers

1 Answer

CR-H100 CD/Tuner/ Amplifier. New about 5 years ago. Tuner won't retain presets. Despite following manual's instructions on both auto and manual tuning, the preferred programme settings are almost always...

These resceivers have a bulit-in device to retain some electricity to feed backup memory. It can be a battery or a capacitor and I think they have reached their time to be replaced.

Nov 21, 2008 | Teac Audio & Video Receivers

1 Answer

Harman Kardon AVR20 II Receiver Low Sound Level

This may sound silly, but please verify that the tape monitor switch in not engaged. The TST mode bypasses that section of the receiver. This is the most common cause. Since the TST signal is the correct volume, the output amp section is working correctly. One other possibility is the tone circuit having a problem, but lets verify the simple stuff first. I'll look up the tnoe circuit section in the meantime. Please update this when you can with your results.


Aug 28, 2008 | Audio & Video Receivers

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