Hi.
My car radio does not turn on. Unable to follow buried traces, or broken trace somewhere. And very complex to dismantle to look for the interruption behind multiple connectors soldered to a printed circuit board; high risk of damaging something else.
It has the typical +12V BAT (permanent feed) and the +12V ACC feed (when key in the ignition enables).

Both supply lines are fine in the car and enter the rear connector. It is the radio that does not turn on.
Trying a long shot-another way: Which IC typically in any japanese car radio built in 2000 would handle the turn-on ? Its data sheet could help finding such IC on the board.
The push-on / push off switch is a single momentary tact switch confirmed good.

It would mean looking at a few car radios schematics of the era to see how where designed then.

Or; what IC's do you know that handle 'power-on' for car radios ; how to do a search, using what terms ?

If anyone has magic powers for schematics, it is an Alpine XQD101390LNF

 

Post a photo of the front.
Or, does it look like this?

 

Exactly.

 

You can buy replacement units off ebay.

https://www.ebay.com/itm/235268508644

This one is XQD000120LNF
https://www.ebay.com/itm/226084697644

 

Hi E,
If it's a Discovery radio, perhaps this is it?
I searched for Landrover discovery radio wiring diagram.
C

 

Thanks for the effort, gentlemen.
An used radio from the wreck yard or ebay (available) risks that will not work as they have an anti-theft feature that a certain code has to be entered after removed from the parent vehicle. ¿? as far as I learned.
And the exact model is mandatory as features detached CD changer input, detached multi-channel surround amplifier, controls from the steering wheel, and headphones for the third seats row.

I can read something as rear fog lights something in that schematic for Discovery I; not Discovery II. Not part of the radio.

 

Thanks for the effort, gentlemen.
An used radio from the wreck yard or ebay (available) risks that will not work as they have an anti-theft feature that a certain code has to be entered after removed from the parent vehicle. ¿? as far as I learned.
And the exact model is mandatory as features detached CD changer input, detached multi-channel surround amplifier, controls from the steering wheel, and headphones for the third seats row.

I can read something as rear fog lights something in that schematic for Discovery I; not Discovery II. Not part of the radio.

Did you try searching for Discovery 2? I did.
C