We have 6 Mag one BPR40 radio's all of a sudden you can't hear anything in the ear pieces.

Very strange! Assuming no programming has changed: check that all earpieces are tight into the radio. Unplug, check for audio without an earpiece and replug into radio. Make certain your batteries are FRESH (less than 1 year old) and fully charged. I am assuming you are using earpieces approved for the Motorola radio. Many speakers do not work and several earpieces are not designed well. Stay away from the auction site cheap ones. You get what you pay for, including failures. For several audio jacks to fail at once would be very unusual. Try a new earpiece. I suspect earpiece failure more than anything. All tests after this require checking programming and/or taking the radio apart.

Victoria

Best to contact Motorola Solutions Get Support or an authorized repair center for assistance.

Mark
Motorola Mobility Support