Hi guys
I needs some advice. I have a pioneer sat nav stereo AVIC-D3 here that was working fine but was removed from a car and left in storage. Now when i power the unit up the LCD back light will power up for a moment then goes out and will not power after that. All other functions work, touch screen works fine which you can just make out with no back light. The back light is a cold cathode florescent lamp and when it lights briefly on start up i measure 60v at the lamp but this drops to 0 and i have no light . I have a very good service manual for it and i need some help testing the circuit please.
Here is the manual (you have to search AVDI-D3, i tried to upload but i couldn't get it to work, sorry!!) http://elektrotanya.com/?q=showresult&what=L19HP03U&kategoria=&kat2=all
The driver circuit for the back light is on pages 28-29 and the connector for the back light is CN5006
Regards
Mark
I needs some advice. I have a pioneer sat nav stereo AVIC-D3 here that was working fine but was removed from a car and left in storage. Now when i power the unit up the LCD back light will power up for a moment then goes out and will not power after that. All other functions work, touch screen works fine which you can just make out with no back light. The back light is a cold cathode florescent lamp and when it lights briefly on start up i measure 60v at the lamp but this drops to 0 and i have no light . I have a very good service manual for it and i need some help testing the circuit please.
Here is the manual (you have to search AVDI-D3, i tried to upload but i couldn't get it to work, sorry!!) http://elektrotanya.com/?q=showresult&what=L19HP03U&kategoria=&kat2=all
The driver circuit for the back light is on pages 28-29 and the connector for the back light is CN5006
Regards
Mark