General complaints are, set not powering on, switches off after some time, no audio, no video audio is there, no display 

Please check the speaker cable, check the hdmi cable, optical cable, still not working bring it to service center producing the result to you
There are two types of speakers 

1. DOLBY ATMOS OVERHEAD SPEAKERS
2. DOLBY ENABLED SPEAKERS

DOLBY ATMOS OVERHEAD SPEAKERS
These speakers are unlike others speakers have specific dimension and construction to
Give you the required result, best atoms overhead speakers comes with tilt able tweeter
Inside that gives direction on higher frequencies delivered.

DOLBY ENABLED SPEAKERS
These speakers are placed above the tower speakers or front speakers that basically works on
Reflection. However loss on reflection is inevitable by absorption of the ceiling material used.

this may be problem on the front panel control pcb, bring it to service center transferred to the drivers (speakers) where
Ever we install, copper is the best conductive material for better efficiency, we recommend
Best speaker cable with better specification for ultimate experience.fg

Home theater installation is not merely connecting speakers, we need to calibrate the speakers and ensure calibration properly, so installing with professional is always best for getting 100% best result

Yes provide 30 days warranty for the spares replaced against manufacturing defects, how ever failure due to high voltage, poor maintenance will not be covered in this term

Yes this involves manpower cost and travel, fuel expenses, estimation cost vary from 300RS-500RS  

Giving estimation without opening the gadget is difficult and may lead to miscalculation.  So we can provide estimation after inspection of the gadget,the same will be repaired after your approval by mail or whatsapp.