Anyone know the actual value of the LED's in the meterbridge or better a digikey part number? I tried searching for the parts via schematics I have and nothing comes up.
are you sure it's the led that failed? well or maybe you want to change the colours, but i have just yet returned from the studio where i repaired 5 of the channel-rectifiers from the meterbridge. in most cases it was the trim-pots that were dead and some burnt resistors... but leds very rarely fail.
I am positive it is the LEDs. I know this because you can tap/bump the LED and it will work again or vice versa. One would think it's a cold solder joint which in some cases it is however I had several leds which had one of the solder pins fall off.