Question about Denon AVR-3805 Receiver

1 Answer

Front panel lighting is cutting out. A tap on the

Front panel (LED ?) lighting is cutting out. A tap on the top of the unit will bring them back on, but they will fade out again in seconds. Any ideas? Thanks.

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 4,234 Answers

The most common cause of this are poor connections at the display on the front panel board. Resoldering these connections should resolve the problem. While rare, it is possible that the connections at the voltage regulators on the main board are the soruce of hte problem. In any case, the repair is a labor only repair. Any shop that handles audio equipment should be able to repair this easily. I usually charge the minimum labor charge and check the entire board for any poor connections while it is open.

Dan

Posted on Feb 02, 2010

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Sony Vaio VGC-RC210G blue panel light LED burned out. Need to know how to change bulb?


Obviously the question was not answered correctly. I don't know how well you are versed into taking things apart, but here we go. First you need to unplug Sony. You need to remove the I/O panel on the bottom of the case after removing the front panel. Remove the on/off switch and remove the two lights adjacent to it. You gently pry apart the tabs on the back of the bulbs and pull the lights out from the back out of retainer. Do the same with the light that is burned out. Carefully cut or break the two cable ties and remove complete wiring harness. You need to remove the side Panel (right side looking from the front). Remove the air tunnel pieces (2 of them), The cable that needs to be unplugged from the motherboard. it is the very first along top edge from the left. It is yellow. Open the 2 tabs that hold all wiring down the front (you will see these just in front of CPU fan and behind front grill. Remove the harness. I do have the number in front of me but you can take the harness to Radio Shack and they can give you the correct one. Cut the old bulb off as close as possible. Solder the new one on and reverse the steps to reinstall. Once harness is plugged back onto motherboard, you can test by plugging power cord in and pushing power button. Make sure none of the wires are touching each other or any metal. Put it all back together and you will have blue light (light is not blue, plastic in front of it is). OR you can just use it without that light as it serves no purpose to be pretty and no one but you will know the difference. By the way I refurbish, repair, etc. nothing but Sony PCs. You also may be able to find a replacement harness but they are scarce. Hope this help. OH, the power supply or motherboard has nothing to do with this bulb working or not. If the other two (power on and hard drive activity) work, the bulb only, is bad.

Jan 07, 2013 | Sony VAIO VGC-RC210G 1GB DDR2 PC2-4200...

1 Answer

Motherboard diagram Acer eMachine MB DA061/078L


Hello? Tap, tap on the monitor. What are you reading from?

http://www.ebay.com/itm/Acer-MB-NB107-001-DA061-078L-Motherboard-eMachines-08120-2-780G-AM2-Desktop-/280919767281?pt=Motherboards&hash=item41681f78f1

The front of your computer is the Front Panel.
The area of contact pins on the motherboard, that the main wires go to from the Front panel, is the Front panel header.

Motherboard installed in computer, the Front panel header is at the Bottom/Right.
Two rows of 7 pins in a small black rectangular plastic block.

http://www.ebay.com/itm/Acer-DA061-078L-Motherboard-eMachines-EL1200-X1200-AMD-780G-Socket-AM2-DDR2-/140825131784?pt=Motherboards&hash=item20c9d4fb08

TOP row of pins is numbered EVEN.
BOTTOM row of pins is numbered ODD.

Starting on the LEFT side going towards the Right, TOP row:
Pins 2, 4, 6, 8, (NO 10), 12, and 14. Again, there is NO Pin 10.

Starting on the LEFT side going towards the Right, BOTTOM row;
Pins 1, 3, 5, 7, 9, 11, and 13.

A) Pins 1 and 3 are for the HarDDrive activity LED. (Light)
Pin 1 is for the Positive ( + ) wire.
If the HDD LED is dim when the harddrive is active, switch the wires around.

2) Pins 5 and 7 are for a Reset switch, IF a Reset switch is used.

3) Pins 2 and 4 are for the Power On LED (Light)
Pin 2 is for the Positive ( + ) wire.
If the PWR LED is dim when the computer is on, switch the wires around.

4) Pins 6 and 8 are for the Power On switch.

5) The rest of the pins are N/C. Not Connected.

Don't forget to plug the 4-pin ATX +12 Volt power cable in,
(Top left corner),

http://www.playtool.com/pages/psuconnectors/connectors.html#atx12v4

For additional questions please post in a Comment.

Regards,
joecoolvette

Sep 06, 2012 | Computers & Internet

1 Answer

Wire diagram


The front of your computer is the Front Panel.
The area of contact pins on the motherboard, that the wires from the Front Panel go to, is the Front Panel header.

Specifically we are talking about the Reset switch, Power On switch, HarDDrive activity LED light, and Power On LED light.
Speaker pins for an onboard speaker< (BIOS Beep Codes), may be also included in this header.

What you need is a Front Panel header pinout.

I'm looking at the motherboard now,

http://www.motherboards.org/imageview.html?i=/images/mobot/motherboards/6335.jpg

The silkscreen print next to the Front panel header, is fuzzy. Probably is on your motherboard also.

[Motherboard installed in computer case, the Front panel header is at the Bottom/Right corner. Just wanted you to know, I KNOW.

The photo has the motherboard turned 90 degrees to the Right.
PANEL is silkscreened to the Right of the Front Panel header ]

Looking at the motherboard installed in the computer case, the Front Panel header is two rows of pins.

The pins have a white rectangle silkscreened around them. To the left of these two rows of 10 pins, is another small rectangle in white.
These are for IrDA,
(6 pins. Two rows of 3 pins)

http://www.webopedia.com/TERM/I/IrDA.html

Suggest leave them alone.

There are 20 pins. Two rows of 10 pins for the Front panel header.
Willing to bet Pin 1 is the pin to the upper Left corner.
Pin 20 is the pin at the bottom Right corner.

Coming from the Left side, across the Top row;
Pins 1, 3, 5, 7, 9, 11, 13, 15, 17, and 19.

Coming from the Left side, across the Bottom row;
Pins 2, 4, 6, 8, 10, 12, 14, 16, 18, and 20.

It looks as though this is just the old Front Panel header setup, used for a lot of old motherboards.

For example, I can just about make out the pins for the HDD activity LED light.
Bottom row, come from the Left side.

The first three pins, which are pins 2, 4, and 6, are for the Keylock.
DO not connect any wires to them!
The next two pins, 8 and 10 are for the HarDDRive activity LED.

Top row; Pins 5 and 7 look like they are for the Power On LED.

HOWEVER, let's use deductive reasoning based on intelligent thought.
Or in otherwords, 'Wing it'.

All you have to do, is get one of those LED lights that have two wires.
This will be your test unit.

Go across the Top row. Touch TWO pins at a time. For example Pins 1 and 3. No power? Touch pins 5 and 7. No power?
(Shouldn't be)

Touch pins 9 and 11, and so on. Keep going across the Top row.
No good? Go across the bottom row, BUT SKIP pins 2 and 4.

What will happen? When you finally touch, the two pins for the Power On switch, the LED light will light up, and the Power Supply will turn on.

With the Power Supply on you can go back, and see which two pins keep the test LED light ON. These pins will be for the Power On LED.

Test LED light blinks? You are touching the pins for the HarDDrive activity LED.

Windows is running, and you touch two pins, and Windows restarts?
You have the pins for the Reset switch.

Speaker pins will be FOUR pins in a row, and by finding the rest of the pins, you will know which ones these are.

BY using the LED light you will harm NOTHING. In fact you could use a jumper wire. If you touch the wrong pins, NOTHING will happen. If you touch the two pins for the Power On switch, the Power Supply will come on.

Shock Hazard:
The VOLTAGE is 5 Volt DC.
In comparison two D cell flashlight batteries store 3 Volts DC.

In otherwords; NONE.

For additional questions please post in a Comment.
It may be hard for you to navigate around this website, but would appreciate hearing back from you.

Perhaps you can post a Front Panel header pinout, for this motherboard, and be somebodies hero.

Just a thought.

Regards,
joecoolvette

Jun 22, 2012 | AOpen MX36LE-UN (91.89Q10.101) Motherboard

1 Answer

Touchpad and extern mouse working at the same time. Very annoying. Have tried all i can to disable the touchpad. Have an Compaq Presario CQ62


Try this website to down load a .pdf manual for your laptop.

h10032.www1.hp.com/ctg/Manual/c02641795.pdf

Look closely at the touch pad, in the top left hand corner of the pad you should see a little white led shining away.

Tap the led twice, it should turn orange, you've disabled your touch pad, to re-activate it, tap it twice again, this should bring the white led back on.

Apr 14, 2011 | Compaq (153515-001) Touch Pad

1 Answer

How to hook up the face plate of a emachine w3400 Wich includes 3 wires 1 power butten and 2 led lights


Look at the pinout of the Front Panel header, of the eMachine W3400's motherboard.

The plastic front of the computer is the Front Panel.
The area of pins on the motherboard, that the cables (Wires) from the Front Panel connect to,
is the Front Panel header.

The motherboard for an eMachines W3400 desktop computer is an MSI ms-7145
(Micro Star International)

Orient the motherboard in your view so that we are both looking at it the same way.
Processor to the Top, Ram Memory slots to the Right, white PCI slots (3) to the Bottom.

JFP1 is the Front Panel header.
(Junction Front Panel 1)

JFP1 is on the Bottom Right corner. There are two columns of pins arranged vertically.
(The JFP1 header runs parallel to the Right side of the motherboard)

The Left side column of the JFP1 header is numbered Odd.
Starting at the Top and going Down, the pins are numbered;
1, 3, 5, 7, and 9

The Right side column is numbered Even.
Starting at the Top and going Down, the pins are numbered:
2, 4, 6, and 8.
There is NO Pin 10

A) Pins 1 and 3 are for the HarDDrive Activity LED light. (HDD)
If the LED light is dim will operating switch the wires around

B) Pins 5 and 7 are for the Reset switch. (Reset button)
> IF Used

C) Pin 9 is Not used. (NC. No Connection)

D) Pins 2 and 4 are for the Power On LED light (If dim switch the wires around)

E) Pins 6 and 8 are for the Power On switch. (Power On button)

Trace the wires back to the Power On switch. Even if it means temporarily removing part of the Front Panel to see.

Same with the LED lights.
See which wires go to the Power On LED, and HDD Activity LED. (Harddrive Activity LED)

Follow the 3 wires, and tell me where they go to on the Front Panel.
USB port?
Memory Card Reader?
Firewire port? (a1394)

Nov 27, 2010 | AMD eMachines Desktop System w/ 17'' CRT...

2 Answers

Where can I get a hp pavilion a520n power button switch?


ebay.com ;)
or you can try compusa.com
if that doesnt work just call 1-800-711-2884 HP tech support number and ask them ;)

Apr 23, 2010 | HP Pavilion A520n (DW233A#ABA) PC Desktop

1 Answer

My unit only showed a RED LED when powered up.


Try resetting it once. That will bring it back to factory Defaults. That should help . try connecting to your computer to see if you have a valid connection. If this still doesnt work , you might have a dead unit.
Thanks
Ranjit
PS : Dont forget to rate me if you got your answer.

Aug 14, 2009 | 2wire 2700HG-B Router (2700HGB)

3 Answers

Would like to switch off clock light, esp at night, or even permanently


3d848865-4391-4546-8004-9f8c2533f2d0.jpg

Proceed at your own discretion, this will void your warranty. This worked with my Model 3 clock radio:

    1)Remove the four corner screws on the back panel with a long phillips screwdriver.

    2) Do not remove the two other screws on the back panel.

    3)Gently pull the front panel forward, sliding it out of the wooden case leaving the back panel in place. You can pull of the front panel just free of the case and lay it flat before the connected wires are taught.

    4)Unplug the 7 wire harness leading to the back of the clock.

    5)Separate the brown wire from between the black and red wires to make room to cut, or modify it.

    6)The brown wire is the lead wire to the LED light on the clock. To permanently disable the light, cut the brown wire. Better yet, install a switch in line with the brown wire, which I have not attempted yet and is not covered in this fixya.

    Good luck, I have always loved this radio except for the pesky light keeping me up at night.

May 28, 2009 | Tivoli Model Three Clock Radio

1 Answer

Receiver cuts in and out


Sounds like a cold solder to me or maybe an oxidized terminal but could be something more simple.

1- If the unit still has power but no sound - Try and reseat the jumpers on the back of the unit - top middle (adapter unit)

2- If you are tapping near the speaker button it may have dirty terminals and may be cleaned with some electronics cleaner. One way to diagnose this is switch it off and on several times and see if it changes.

3- If tapping on the front panel makes it start working - can you duplicate it going back out by tapping? This may be a cold solder on the ops panel. If you have some soldering skills this may be an easy find and fix. If not you may need to take it to a repair center. By no means operate on the unit with power to it with the cover off!

Good luck!

Mar 25, 2009 | Kenwood Audio Players & Recorders

1 Answer

Sylvania table top wine cooler


go back where you bought it...buy another one and bring back the one thats flashing,get your refund and walk home with a new cooler

Jul 15, 2008 | Refrigerators

Not finding what you are looking for?
Denon AVR-3805 Receiver Logo

Related Topics:

111 people viewed this question

Ask a Question

Usually answered in minutes!

Top Denon Audio Players & Recorders Experts

 Grubhead
Grubhead

Level 3 Expert

5126 Answers

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

Level 3 Expert

6694 Answers

The Knight
The Knight

Level 3 Expert

74243 Answers

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

Answer questions

Manuals & User Guides

Loading...