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

Transfer Multisort Elektronik Electronic components

tme.eu

Transfer Multisort Elektronik the...

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The issue you're experiencing with your Denon receiver AVR-1700 may be due to a few reasons. Here are some troubleshooting steps that you can try:

Check the connections: Ensure that all cables are securely connected to the receiver and the speakers. Make sure that the input source is selected correctly on the receiver, and the volume is turned up.
Reset the receiver: Sometimes, resetting the receiver can resolve issues with the sound. To reset the Denon AVR-1700, turn off the power, and unplug the power cord for about 10 minutes. After 10 minutes, plug the power cord back in and turn on the power.
Check the speaker settings: Ensure that the speaker settings are configured correctly on the receiver. Check that the speaker wires are connected properly to the receiver and the speakers. Make sure that the speakers are not damaged or blown.
Check for firmware updates: Make sure that the receiver is running the latest firmware. Visit the Denon website to check if any firmware updates are available for your model.
Check for hardware issues: If none of the above steps work, there may be a hardware issue with the receiver. In this case, you may want to contact Denon customer support or take the receiver to a professional repair shop for further assistance.

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

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DENON DRA-345R Memory Loss/Reset issues FIX

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