Cinemate 1SR

Magic Smoke has a few great videos on how to repair Bose soundbars and other devices (all credits to him): https://www.youtube.com/results?search_query=magic+smoke+bose

The components (and PSU specifically) used in the cinemate 1SR are very similar to Bose Solo soundbars.

The first thing to check is the PSU. Magic smoke goes through the power supply for which a common issue are the FAN7384 + LM5021 chips: https://www.youtube.com/watch?v=R-fEQ-UUNks

If the PSU is ok, Bose solo soundbars can often fail because of the crystals next to the DSP and/or spikes in the power supply he fixes by adding capacitors: https://www.youtube.com/watch?v=lUz95-tm0bQ The cinemate 1SR doesn't have any crystals, the ADSP-21366-KBCZ-1AA has an internal clock. A common issue for the cinemate 1SR appears to be the Spansion FL128PIF flash chip (located at the back of the DSP board, it has a sticker on it) that can either have a bad connection or which is dying. Resoldering it can simply fix some common issues (like green led blinking indefinitely at startup, or remote not responding after being on for some time). The chip may also need to be replaced (but I don't know yet if it has to be re-flashed or not).