Start with the evidence already working
Amazon’s surround troubleshooting separates a detected format from its test video and the streamed content. Record each result individually. If the equipment report and sample both support the desired format, do not erase that information by describing the whole audio system as incompatible.
For a hypothetical example, a receiver may show a surround mode during a diagnostic sample but a stereo mode during an older programme. That pattern alone does not establish a fault: the programme, selected track and app output route still need checking. This guide has not measured that receiver or programme.
Keep the programme comparison precise
Note the exact title, episode, language track and app. If another language is selected, compare its documented audio offering instead of assuming every language has the same format. Keep accessibility tracks distinct from the primary mix where the service labels them separately.
Replay the same short passage at the same volume and input. Avoid comparing a loud action scene with quiet dialogue in another film, because perceived spaciousness is not a reliable format detector. A photograph of the receiver’s relevant mode can help support, but crop away account names and unrelated household information.
Change the equipment path only with a reason
If the diagnostic itself stops detecting the desired capability, investigate the connected route using the manufacturer’s instructions. Record whether the Fire TV passes through a receiver or the television first. Do not assume an optical connection, HDMI return path and direct receiver input have identical capabilities.
When only one title or track differs, ask the content provider about that specific item before replacing cables. When every sample changes after moving an HDMI connection, ask about the equipment path. A precise before-and-after record protects the useful distinction between a title limitation and a setup problem.