I'm not sure if you had this same problem but i couldnt seem to connect to any other v4s.
My sound blew after just two weeks
So i had the hole thing apart, replaced the speaker and REMOVED the infared filter.It seems to work perfectly without it...
You must have broke your piezo transducer
Piezo Xducer 27/1.8 YU87U 3404 0.55
https://www.maplin.co.uk/module.aspx?ITAG=S...2&doy=11m8#spec
ive broke it before and fixed it on my rare v1 tama
DEBUGGING WORKS!!!