HDMI-to-composite cable does not work for my old TV connection. Can I install an HDMI-to-RCA converter?
in theory it should work, but have not tried. If you try, let us know if it works. you will not get 4k video but you know that already with red/white/yellow connector (rca).
I have connected my roku stick streaming plus to the RCA converter and the stick keeps over heating. It will work for about 15-20 minutes then gives an overheating alert. I have unplugged and re-plugged a couple times to see if maybe the connection wasn't right but so far same problem persists.
An Hdmi to component adapter may be one way to go, however there are some very inexpensive RCA Roku TVs available at Walmart where the OS is already built in.
If it's in your budget, It may be worth it to take the leap. I hope this helps!