amplifier
broken
center
checking
computer
contractor
diagnostic
dynamics
engineer
entertainment
equipment
examining
fix
fixing
glass
hifi
inspecting
looking
loupe
magnifier
magnifying
maintenance
man
multimedia
music
musical
parts
pliers
problem
radio
repair
repairing
repairman
replacement
screwdriver
screwing
service
sound
speaker
stereo
support
system
tech
technical
technician
tool
tuner
warranty
work
workshop