Question about Clarion DRB2475

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No back light on display

When radio is on, there is no back light. Is this a wiring issue or is the LCD bad. The display is very dim.

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I know that most Clarions have an "illumination" wire usually orange and or orange/white. If the unit only has one, then most likely it is for a "dimmer circuit" and not atraight illumination. Let me know. If by putting power on tat orange wire does not do it, then you have a bad "bulb" in the faceplate.

Larry T
Winona Lake, IN
http://www.cybersoundsaudio.com/cybersounds/vehiclepics.html

Posted on Jan 28, 2009

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Sony cdx l400x display


Assuming you do not have a dimming wire (orange or orange/white) connected, it sounds to me like the display lighting is out. Small bulbs might be able to be replaced if you can find the parts and are technically inclined. If not, I'd suggest looking for a replacement face at pacparts.com or buying a new radio. Probably a new radio because the face will most likely cost more than the entire radio.

Dec 13, 2013 | Car Audio Receivers

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Can you replace the led for the faceplate Jenson phase linear ump401? Thank you in advance


The display is not an LED (Light Emitting Diode) it is a LCD (Liquid Crystal Display), behind the display is a tiny light or light bulbs that back light the display, yes they can be replaced, you can buy the bulbs at Radio Shack if the number can be crossed over, but most likely they are a Radio Shack # 7219 Micro Lamp

Nov 05, 2010 | Jensen Car Audio Receivers

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Disc can eject and be inserted but display does not light up, none of the buttons do anything. tried a different deck and it does the same thing the display dosen't work and no music plays. i am thinking...


It sounds like they messed up your installation. You can confirm their work by verifying that each wire was attached properly.

2005 Pontiac Sunfire Car Radio Wiring Diagram Car Radio Battery Constant 12v+ Wire: Orange
Car Radio Accessory Switched 12v+ Wire: Yellow
Car Radio Ground Wire: Black
Car Radio Illumination Wire: Gray
Car Stereo Dimmer Wire: Brown
Car Stereo Antenna Trigger Wire: Pink
Car Stereo Amp Trigger Wire: Pink
Left Front Speaker Positive Wire (+): Tan
Left Front Speaker Negative Wire (-): Gray
Right Front Speaker Positive Wire (+): Light Green
Right Front Speaker Negative Wire (-): Dark Green
Left Rear Speaker Positive Wire (+): Brown
Left Rear Speaker Negative Wire (-): Yellow
Right Rear Speaker Positive Wire (+): Dark Blue
Right Rear Speaker Negative Wire (-): Light Blue

Click on this link for a PDF of the installation instructions of the radio (If you don't have the installation guide that came with the radio).

Illumination is the grey wire from the car to the orange with white stripe from the radio.

I suspect that the yellow wire from the car is not connected properly. When the orange wire (constant power from the car) is attached, but not the yellow wire you can insert and eject cds, but it will not turn on. Constant power is used for maintaining the clock and preset radio stations.

If everything looks correct, I would take your car back to the installer and have them correct the issue.

Dec 21, 2009 | Sony CDX-GT400 CD Player

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The Bulbs have blown you can get special bulbs from the renault dealer have to pull off to of dash to fit

Dec 04, 2009 | Aiwa CDC-MP32 CD Player

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Dimmer wire connection from aftermarket delco harness to alpine


One Of The Wires Should Be labeled Dash Lights That Comes Out Of Your Radio.

Mar 11, 2009 | Alpine CDA-9886 Car CD/ MP3 Player

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Radio display light


To get the back light on you need to hook up the illumination wire to the ignition acc wire

Jan 10, 2009 | Clarion DXZ375MP CD Player

1 Answer

LCD display has died suddenly...


This radio has 2 lamps in the display to provide backlighting for the LCD, if 1 of them goes out, they both go out because they are in series.
The part number and specs are:

B30-1485-05 LAMP (5.5V 0.125A) ref # PL1 and PL2

To be sure this is the problem use this rule:
If the buttons on the display light up but the LCD does not, means the supply voltage is present, both use the same supply voltage.

The LCD does not light up, but you can see a very faint image of the display when you look close.

If either of the last 2 things mentioned are not true, you have a different problem.

If the buttons on the display do not light up as well as the LCD not lighting up, you have a bad voltage regulator IC on the main board of the radio, not a problem in the display. Or you have a bad connection for that supply voltage.
The part number for that regulator is:
BA4911-V4 ref # IC7

If the backlighting for the LCD is good, but you see no numbers or letters on the LCD, the LCD or the LCD driver IC is bad.

Both of these problems require very good soldering skills, unless you are confident with your own soldering skills I advise you to take it to an authorized Kenwood service center for repair.

Let me know if you need any more help and tell what you observe from the rules above.

Jun 18, 2008 | Kenwood KDC-216S CD Player

1 Answer

Illumination v. Dimmer


Good day,

The illum wire goes directly to the headlight switch and tells it when to light up, where as the dimmer wire is variable meaning it would dim up or down with your dash light control. Dimmmer is usually only need on factory radio's and not aftermarket. I suggest wiring only to the illuum lead and do not connect dim. Also about the clock make sure your red and yellow wires are not crossed, yellow is a constant hot and red is only hot when the ignition is on, so if they are backwards the radio would loose it's memory when you turn the key off.

Hope this helps

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2 Answers

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What is your power wired into? Are your head lights dim also? You may have a battery issue?

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2 Answers

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On newer stereos, you might have to experiment with the "panel" wire.

I just installed a VR3, and discovered that the more voltage on the "panel" wire, the dimmer the display.

With no connection, you get full (daytime) brightness. With full voltage, you blank the display.

I wired mine up to the car's instrument lights through a 10Kohm trim resistor so I could adjust the "night" intensity. But if I dim the car's instrument lights, the stereo gets brighter. Oops.

Older car -- I can't just flip a software bit. ;)

But I gather a lot of new stereos are like this. The display on my (factory) stereo in the Mitsu dims a fixed amount when the lights come on, but doesn't adjust with the car's instrument dimmer.

Sep 23, 2007 | Car Audio Receivers

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