Kowloon Kowloon City 
Repair item：Amplifier What items do you need to repair?
Amplifier
Please describe the problem you have (optional)
1) Diatone DA U750 擴音機, 前級正常出聲，但後級沒有聲音，聽到裏面的保護繼電器是不是發出噠噠聲音
2) Technics SU3100, 前級正常出生，後級的左聲道有嗚嗚持續聲音。
當初 Technics SU3100 連到Diatone DAU750取100V電，Diatone 沒有開機， 但和Technics連到了同一對喇叭，聼鼓聲時候，出現以上故障。
What time do you prefer to have the service?
Any time
Where do you prefer the services?
My designated location
Provider's location
Provider's location
Anything else that we need to know?
No
Where is your location?
九龍城區,undefined
