I was looking for a single display PCB and did not want to buy the whole Pinled display matrix. So after hunting around I got an answer on RPG. Here is a place to buy the boards or boards with display attached that will replace just what you need.
This guy is really fair. Quoted me $4 for shipping, then emailed me to tell me it was only $2.50 when he got it to the post office. Only billed me for what he paid.
Board is a 100% retrofit. When soldering make sure the top of the display glass is even with the top of the circuit board. This will be dead centre on the translite. Slips onto the standoffs perfectly as well. 10 minute fix.