Question about NAD 712

2 Answers

NAD 712 Stereo Receiver display

The LCD display on my NAD 712 receiver quit working. The problem has been isolated to the backlighting for the dispalay (if I shine a flashlight from the backside, the display is visible with valid data). The backlighting consists of two small light bulbs mounted on a small circuit board (1/2" x 1.5"). The bulbs are 4mm in diameter and ~10mm tall (without leads). I measured the voltage supply to these bulbs at 5.5V DC. The bulbs are wired in series. Where can I find a part number and/or supplier for these bulbs? I assume that they must have either a 2.5V or 3.0V rating, but I have not idea regarding current draw. Any suggestions?

Posted by on

  • Anonymous Jun 18, 2008

    no lights also how i fixed this issued

    rrocas@gmail.com

  • jhupa Jun 25, 2008

    Funny, I measured 24 Vdc, not 5.5. Radio Shack p/n 272-1154 12v 50ma Bi Pin Lamp They also have a 25ma bulb with insualted pigtails. The replacement bulbs ran for bout 2 years before I had to replace them again but for approx $4 I'm not complaining

×

Ad

2 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 2 Answers

Http://www.bulbdirect.com/ who's your mommy? ;]

Posted on Feb 01, 2006

Ad
  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Replace the incandescent lightbulbs with two or three high intensity blue or white LEDs. You will need current limiting resistors based on what the actual voltage is to the bulbs. The LEDs and resistors are readily available at Radio Shack or your local electronics shop, or Mouser.com.

Posted on Oct 06, 2008

Ad

4 Suggested Answers

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 there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this 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.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

  • 1 Answer

SOURCE: Nad 712 output issues - Mute flashing

The only thing I can tell you for sure is that the mute indicator always flashes (very dimly) when the receiver is off.  I have no idea why, but mine has always done this.

Posted on Mar 11, 2008

  • 1 Answer

SOURCE: NAD 712 Display unit

On my system the bulbs burned out some time ago. Today, I bought a pair of 12v micro lamps at Radio Shack (part 272-1092). Then removed the board behind the display and replaced the bulbs. This required some soldering. The bulbs have held up for more than 6 hours, so I do not think they are going to burn out.

Posted on Apr 06, 2009

  • 3 Answers

SOURCE: will NAD 712 accept an iPod Docking Station?

A 712 is not set up to use an Ipod USB dock.  You can buy a dock that will use RCA jacks into an old stereo - Apple sells them, others too.  Then the Ipod sits up and you can look at it.  Or you can buy the 1/8" stereo plug to two RCA plugs that Radio Shack has been selling for 30-40 years, plug one end into your Ipod headphone jack, and run the two RCA plugs into your Aux input.  That costs about $5, and is easy as pie.  An Ipod will play through any old receiver, but the USB docks will not plug into them.

Posted on Apr 16, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

The display keeps going off on my asus laptop about every 2 minutes or less, even when all my settings are set for never go off.


To isolate your laptop problem, first thing you should do is use an external monitor to check if the video chip is OK. You need to press Fn + F4 or F5, F6 depends on your laptop model to activate the display on your external monitor. If your laptop works fine with the external monitor, then your laptop LCD or the inverter(small board that controls the voltage that is sent to the LCDs backlight) went bad.
Inverters is the problem that is easy to fix, you just have to get the correct inverter for your laptop model and your problem is fixed. One way to test inverter is to check it with voltage meter if it is giving the correct voltage.
To check your LCD, use a flashlight. Shine it to your LCD, if you see a faint image then in most cases it is the backlight that needs to be replaced. If you don't see an image even when shining the flashlight then it is most likely the inverter and it should be an easy fix.

Jul 18, 2013 | Computers & Internet

1 Answer

Viewsonic vp2000s LCD computer monitor - no image displayed; possible backlight outage.


It is possible that the backlight has quit working. Use a flashlight, held at an angle to the display, to see if there is a faint image visible. If so, then have backlight repaired. Otherwise, try a different input / cable.

Aug 17, 2010 | ViewSonic VP2000s 20.1" Flat Panel LCD...

1 Answer

Sound but no picture samsung 40" lcd


It's either the backlight lamp or backlight inverter is busted due to a power failure or fluctuation. Here's how to determine which is which:
  1. Grab a flashlight.
  2. Turn on the TV.
  3. Shine the flashlight onto the screen.
  4. If you cannot see any display even a faint one, the backlight inverter is dead, else the backlight lamps are busted.
  5. Replace which ever is the culprit.

Oct 09, 2009 | Samsung LE26R74BDX 26 in. HD-Ready LCD...

1 Answer

Green light is on but screen is black


It's either the backlight lamp or backlight inverter is busted due to a power failure or fluctuation. Here's how to determine which is which:
  1. Grab a flashlight.
  2. Turn on the TV.
  3. Shine the flashlight onto the screen.
  4. If you cannot see any display even a faint one, the backlight inverter is dead, else the backlight lamps are busted.
  5. Replace which ever is the culprit.

Sep 26, 2009 | Sharp AQUOS LC-32D44U 32 in. LCD TV

1 Answer

Screen displays no signal after a power failure; can hear sound, no picture


It's either the backlight lamp or backlight light inverter is busted due to the power failure.Here's how to determine which is which:
  1. Grab a flashlight.
  2. Turn on the TV.
  3. Shine the flashlight onto the screen.
  4. If you cannot see any display even a faint one, the backlight inverter is dead, else the backlight lamps are busted.
  5. Replace which ever is the culprit.

Sep 25, 2009 | LG 42LC2D 42 in. LCD HDTV

1 Answer

Will NAD 712 accept an iPod Docking Station?


A 712 is not set up to use an Ipod USB dock.  You can buy a dock that will use RCA jacks into an old stereo - Apple sells them, others too.  Then the Ipod sits up and you can look at it.  Or you can buy the 1/8" stereo plug to two RCA plugs that Radio Shack has been selling for 30-40 years, plug one end into your Ipod headphone jack, and run the two RCA plugs into your Aux input.  That costs about $5, and is easy as pie.  An Ipod will play through any old receiver, but the USB docks will not plug into them.

Dec 10, 2008 | NAD 712

1 Answer

LCD Problem


I have seen backlight problems on the external LCD display. Take a flashlight and shine it on the external display to see if you have a picture. If you can see a faint picture, most likely either the backlight or backlight inverter has failed. Those LCD modules can be tricky to service because of the size. I would recommend a qualified tech for the job

Oct 18, 2008 | Sony Handycam DCR-TRV720 Digital Camcorder

1 Answer

NAD 712 Display unit


On my system the bulbs burned out some time ago. Today, I bought a pair of 12v micro lamps at Radio Shack (part 272-1092). Then removed the board behind the display and replaced the bulbs. This required some soldering. The bulbs have held up for more than 6 hours, so I do not think they are going to burn out.

Jun 04, 2008 | NAD 712

5 Answers

NAD 712 Stereo Receiver


the lamps i use on all NAD displays(and have done since the early 1990's) last heaps longer.You can get them from RS components in your country. They are a 14v 37ma type, and seem to last. Never had any come back for replacement again. P/N 351-9585. Increasing the ballast resistor where fitted by 25% in valua also helps preserve them

Jan 29, 2006 | NAD 712

Not finding what you are looking for?

Open Questions:

See all NAD 712 Questions

NAD 712 Logo

Related Topics:

2,104 people viewed this question

Ask a Question

Usually answered in minutes!

Top NAD Audio Players & Recorders Experts

 Grubhead
Grubhead

Level 3 Expert

5575 Answers

The Knight
The Knight

Level 3 Expert

75871 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers

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

Answer questions

Manuals & User Guides

Loading...