Had a Joplin 3 – Broke 4 times in a year.
Joplin 3 was Replaced with a Joplin 4, worked faultlessly for 8months then broke.
Thought sod the Joplin im buying a Reverb.
Reverb broke in 3 weeks………
Currently being fixed at Fisher, something came loose inside which meant it couldnt hold the 250psi inside which it requires for it to come back up. I tried pumping it back up but could just hear air leaking and my guage dropping from 200psi to 50psi, i couldnt even reach 250psi.
edit.
Worth mentioning I now have my Joplin 4 back on and i actually prefer how much quicker it comes up and goes down to the reverb. Ill put the reverb back on once its back fro repair.