I have 20 brand new 3502 or 5503 modules for sale. They are left overs from when my Dad and I ran Pulsar Repair Service. All are in perfect working condition with bright leds. They are $100 each. Please contact me if you don't know how to install them properly, as you can easily damage the contact tabs if you just try to push the module into the case.
Try and send him a "private message". Click on the name (left side) and then "send private message" He gets a message by email if he has that option turned on, and you could get a quicker anwser.