Santsuru, in regards to #2, you should contact the manufacturer before opening the unit and changing any parts, including fuses. All manufacturers have guiding documents stating their warranty policy, but it’s always best to call/e-mail and ask first. That way, they can make a note in their system (make sure to get the contacts name, department, and note the date), and if a serious warranty issue occurs later on, your fuse change will have been documented.
Fuses and confusion
I am slowly upgrading my system and I am looking at the changing of fuses step. I have the following in my system: Sunfire TGA-7401, Marantz AV8805, Carver Load Invariant amplifier, Marantz Ruby, and a Vault 2i. My questions are 1). Which of these components have\use fuses 2). Does changing the fuses invalidate the warranty? 3). Are there videos on changing the videos or do you just pop the hood and start looking. Please feel free to point out issues that I am not aware of and whether this is even relevant under my circumstances. Thanks in advance.