Tip & How-To about Denon Reciever Dra-345r

DENON DRA-345R Memory Loss/Reset issues FIX

My 24 OLD Denon Receiver showed Radio Frequency settings Memory Loss, Power UP reset issues, loss of selected inputs. After reviewing the schematic I found a gold cap (big yellow ELKO) that is responsible of keeping uC Vdd under steady Voltage to keep all settings. According original spec it should keep all data 1 month minimum. I do not know if the issue is that the leakage current has increased somewhere, or that the capacitor lost its capacity. It concerns C643 8.2mF capacitor, near IC605 and D605. I replaced the capacitor with a PANASONIC EECS5R5V155 1.5F capacitor. WIth this capacitor it does not matter if the problem is caused by leakage current, as the 1.5F is >100x more capacity. The first time when the cap needs to be charged, the unit responded little strange, but since 2nd power up this problem is fully solved. The PANASONIC device fits excellent on the C643 position, no bending of wires needed.

BTW, compliments to DENON, the original components are soldered with low amount of solder, easy to remove with manual vacuum solder remover(don't know the UK word for it), so no baking, simply remove solder, take out component, place new one.

Unit is now working again as new.

Regards and success with the repair

PS: I found the component at tme.eu

Posted by on

Denon Reciever Dra-345r Logo

Related Topics:

Related Questions:

2 Answers

how to reset denon s 301receiver?


Instructions
  1. How to Reset Denon Receivers
    • 1 Save the information currently stored in your Denon receiver, such as device commands and multi-zone controls. Some Denon receivers can control multiple rooms and each room needs to be setup properly to provide the correct controls. If the receiver was installed professionally it may be best to contact the installer before resetting the device.
    • 2 Press the "Power" button or the "On/ Standby" button to shut off the receiver. On some receivers it is best to press the button on the device instead of the remote as the remote will normally put the receiver in standby mode. Ensure the display and all other lights on the device are off. Do not unplug the Denon receiver as it will not reset.
    • 3 Press the "Power" button and at the same time press two buttons on the front panel, which are determined by the model Denon you own. Most receivers identify the two buttons inside the user's manual, while some older Denon receivers require you contact Denon for the right button combination. For example, some Denon models require the "Standard" and "DSP Simulation" buttons to be pressed simultaneously.
    • 4 The display will start flashing at about one second intervals. Release the two buttons. Turn on the receiver by pressing the "Power" or the "On/ Standby" button to verify the previous settings and saved radio stations have been erased. If the interface does not flash, the reset was not complete and needs to be re-done. Re-enter the previous settings to ensure there are no further issues with the receiver.

Sep 09, 2014 | Toshiba DVR40 Multi System DVD Recorder...

2 Answers

Denon receiver AVR-3300: Unstable source selection


Go over here: http://denon.custhelp.com/cgi-bin/denon.cfg/php/enduser/std_alp.php?p_sid=1NlVrsDj

I have some Denon components myself and had some problems. Ask them here, and within a day you should have solution for this problem.

Probably you have to reset the device to factory settings.

Jul 22, 2009 | Denon AVR-3300 Receiver

1 Answer

Radio preset Denon UDRA-f10 doesn't save


1) tune in to a radiostation
2) press the Memory button
3) select a preset number for 5 Second
4 Skip "press Memory again"

Feb 04, 2009 | Denon PMA-100M Amplifier

2 Answers

Denon AVR 1909 - tuner audio intermittent - off and on repeatedly


Make sure you have an anteena connected and adjusted

Jan 29, 2009 | Denon AVR-1802 Receiver

1 Answer

Loss of sound on the Denon AVR 2807 a/v surround receiver when I turn on and off lights in my house


Finally the problem was with the HDMI cable. When I pushed it in on the TV set the problem disappeared. It seems the connections must be quite firm on the HDMI cables otherwise anything may interfere to the sound.

Jan 06, 2008 | Denon AVR-2807 Receiver

Not finding what you are looking for?

168 people viewed this tip

Ask a Question

Usually answered in minutes!

Top Denon Audio Players & Recorders Experts

 Grubhead
Grubhead

Level 3 Expert

5017 Answers

Electro Med Services...
Electro Med Services...

Level 3 Expert

6694 Answers

The Knight
The Knight

Level 3 Expert

73691 Answers

Are you a Denon Audio Player and Recorder Expert? Answer questions, earn points and help others

Answer questions

Loading...