Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Chip Amps Amplifiers based on integrated circuits

Denon AVR-1905 problem
Denon AVR-1905 problem
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools Search this Thread
Old 11th August 2008, 11:21 AM   #1
JohanD is offline JohanD  Sweden
diyAudio Member
Join Date: Aug 2008
Default Denon AVR-1905 problem


First post here and hopefully someone here recognizes this problem or has seen something similar...

I have a Denon AVR-1905 5.1 receiver that is behaving badly, i.e. it does not work at all...

After returning home from vacation (5 days away) the unit refuses to start. Before leaving it worked perfect and during my absence it was disconnected from the mains via an extension cable with a power switch (all my video/audio-equipment is connected to the same extension cable and all were shut off via the extension cable switch).

I removed the unit from the mains and opened the cover thinking it was a fuse or something similar. After changing the fuse on the power inlet (3.15A/250 V glass fuse) the unit started and behaved normally! But... after closing the cover the unit is once again dead - i.e. no light/display - nothing.

So, I open it again thinking it's maybe a broken connection or similar but I havn't found any broken solder joints at all...
I can measure AC power over the front switch on the unit (in the "OFF" position") until the switch is turned "ON" - then the AC level over the switch is 0 Volts (seems OK since then the resistance is 0)?
But after that nothing... I have no idea how to test any more components or even where to start... Also, it seems the front LED must be powered/controlled by the CPU board so a lot of boards must be connected to the power board for any indication of function which makes it very hard to look at/wiggle any soldering points during in a powered state in order to find a faulty joint...

Any ideas/schematics/manuals that might help me??

  Reply With Quote
Old 11th August 2008, 03:05 PM   #2
Leolabs is offline Leolabs  Malaysia
diyAudio Member
Leolabs's Avatar
Join Date: Dec 2004
Location: Bukit Mertajam
Send a message via MSN to Leolabs
Check for loose wire/solder joint,remember to disconnect the unit from main AC power.
  Reply With Quote


Denon AVR-1905 problemHide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Denon DVD3910 problem Ryssen Digital Source 1 29th March 2009 08:45 PM
Problem with Denon DRA-455 smithy666 Solid State 0 29th June 2008 08:20 AM
Problem With Denon Avr 3200 ostie01 Solid State 4 21st July 2005 08:38 PM
Denon 2910 problem mura Digital Source 0 16th June 2005 09:30 AM
Problem with Denon DVD 2800 jh6you Digital Source 0 20th May 2004 05:46 AM

New To Site? Need Help?

All times are GMT. The time now is 08:33 AM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 16.67%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio