Approached Dealer and they diverted to Service Centre in Mumbai. Service Centre Reply about the case is like below
"I have taken this up with my technician - and he has advised not to change the fuse. As directly changing the fuse is not advisable.
You will have to send the unit to our service center.
Also as per my record this unit is not under warranty."
My opinion - attempt to sort this out only if you have knowledge of electronics, electrical wiring, etc.
In simple terms, a fuse is a safety device in any electrical circuit, designed to create an open circuit when danger strikes, thereby protecting your equipment from further damage. Fuses can blow under normal circumstances as well, for which a simple fuse replacement will work. However, if the fuse has blown as a result of component failure (for example a short circuit), just replacing the fuse will not work.
It is not easy to externally ascertain the reasons why a fuse failed unless one observes the operating conditions carefully - things like, was there a sudden spike in the domestic electricity supply when the equipment was playing, was the equipment getting extraordinarily warm just before the fuse blew, in case of amplifiers - was the amplifier being over driven with tough speaker loads, etc. We usually don't keep an eye open for these external circumstances of influence, while listening to music. A technician who is consulted with, or receives your equipment for repairs, generally will not have access to such information as well.
An experienced technician will always run checks to ascertain the root cause before replacing a fuse. There could be total failure or intermittent failure. If there are intermittent issues, the equipment may work temporarily with a change of fuse, only to fail again at a later point. So I would always suggest to have a qualified and knowledgeable mech take a look. It could be that there is a short circuit somewhere or a capacitor failure somewhere causing high current drain, etc etc.
NEVER: old school quack mechanics have the uncanny knack of stripping a piece of hook-up wire and soldering it cross the 2 ends of the holder of a blown fuse. This should never be done under any circumstances in any type of equipment.
