Hi all,
I have a Yaesu Vx7 transceiver that I want to change the backlight LEDs on. Currently they are orange, but I want to use blue. I got all the LEDs swapped over but now it's come to light(no pun intended) that blue LEDs require a higher voltage than orange. I experimented by bridging the resistors just before the LEDs, but that didn't work. Someone told me I need to change the values of the resistors around the op-amp Q3010, this is where I get lost. I've had a read up on op amps but I'm afraid it goes over my head somewhat. I have changed a couple of resistors around the amp but with no success. Voltage at the LEDs currently is 1.95v, my blue LEDs require 3.8v. LEDs in question are the 9 at the top of the schematic.
If anyone could help me out I'd be most grateful, I have attached the schematic too.
Morgan.
I have a Yaesu Vx7 transceiver that I want to change the backlight LEDs on. Currently they are orange, but I want to use blue. I got all the LEDs swapped over but now it's come to light(no pun intended) that blue LEDs require a higher voltage than orange. I experimented by bridging the resistors just before the LEDs, but that didn't work. Someone told me I need to change the values of the resistors around the op-amp Q3010, this is where I get lost. I've had a read up on op amps but I'm afraid it goes over my head somewhat. I have changed a couple of resistors around the amp but with no success. Voltage at the LEDs currently is 1.95v, my blue LEDs require 3.8v. LEDs in question are the 9 at the top of the schematic.
If anyone could help me out I'd be most grateful, I have attached the schematic too.
Morgan.