I bought a pre-owned RPM85
I bought a pre-owned RPM85 but unfortunately the Bluetooth / MP3 module was fried. Since the price on this replacement was right, I went for it.
Getting to the actual module to replace it was kind of a pain but not difficult (remove screws from outer box to slide out chassis, remove dials and screws from front plate, remove more screws from inside - the module is sandwiched between the main board and the front face plate, etc. ). . . but once it was accessible it was an easy matter to unplug the module from the main board and plug the new one in. NO SOLDERING REQUIRED. Basically as easy as adding a hard-drive or RAM to a computer.
If you're handy, patient, and organized, it shouldn't be too challenging.
The module itself works great, and the Bluetooth range is good for what I need (I'm guessing about 30-40 ft, line of sight).
Many thanks to customer service for hooking me up with what I needed, and assuring me that I wouldn't need to do any delicate electrical work.
If your RPM85 doesn't Bluetooth anymore, just grab this and dive in.
Recommended.