PAR 64 Replacement LED's

[snap]

I am working on a PAR 64 stage light that has 10mm blue, green and red LED's
I have some that that have burned out and would like to find a suitable replacement for them.
The company that built it will not give me any assistance. I can get 10mm LED's from many
sources but I am concerned about performance.
Any thoughts?

 

[dorke]

Welcome to EP.
Is there a "pattern" in the not working LEDs or are they "scattered" around?
The LEDs are usually driven in groups.

To identify the LEDs parameters a good LED should be tested.
It can be done in board or
taken out and measured with a power supply a series resistance and a DMM.