DAB radio backlit display.

Hi Devil,
I do't know the exact modle you speak of, but I design in these things for a living, so here goes....

It is very likely to be an LED backlight, but highly unlikely the LED has failed. They are generally very reliable. It's far more likely to be a dry joint on the LED itself, or in the power and GND rails for that particular LED or row of LEDs. I'd check that first. The LEDs are normally Surface Mounted Devices (SMD) embedded within the LED module, behind the glass of the display. The metal frame which holds the glass onto the PCB can be removed by bending lugs, undoing screws etc, allowing the whole assembly to be taken apart, exposing the PCB and LEDs. Unfortunately, in order to disperse the light, the LEDs are normally "potted" or embedded in a bed of semi-translucent silicon, which means that replacing them, involves ripping out the silicon from it's "bath", then replacing the offending LED. This is VERY difficult, and would need new silicon blobbing in there afterwards. The LCD module is not designed to be taken apart, and you may find it won't go back together again properly, personally, I'd get in touch with BUSH and see if you can get a new LCD module, you should be able to replace it into the radio fairly easily. Your blood presure and remaining hair will thank you for taking this route. Good luck with whatever you go for.
GG

 

I don't believe it! I reckon you two set it up

 

Ha HA,
yeah, all too spooky for words isn't it?
My caveat is that I don't design the modules themselves, I just specify what style and size, what colour LEDs,how many, what type of text size etc etc etc...everything else is done by our friends in the far east.

I don't generally do radios either, but a backlit LCD module is pretty standard wherever it goes.

Enjoy the experience, they're pretty robust, if you do get it out, a bit fiddly to disassemble and get back together, but you should need nothing more than a screwdriver, and a pair of narrow nosed pliers to open the module up and have a look at the LED layout.

 

like talking to yourself ?

 

I have a Bush (I know, I know) DAB radio with a
3-line dot-matrix display which has 'lost' one of its
blue back lights.


Better off to bin it & buy a decent 1
Ant

 

Pure are very good, and they have a wide model range, which is useful if you want more than one radio, and have different requirements for them...

 

Can't look as good as this</a.....

 

And in a touch of brilliance, the numbers on the volume control go up to 11....