I was reading through the previous thread by NOForker about NTSC video issues, and I noticed a couple people bringing up an issue where their 6567R8 would not be detected on boot. Since it's a separate issue, I decided to make a new thread about it.
I am having the same issue where my C64R MK2 is having great trouble detecting my 6567R8, booting only on rare occasion after many power cycles. Today I switched to a 6567R9 and the chip is being detected flawlessly. Although that makes this issue no longer relevant to me, I hope that a future firmware update might address it to prevent others from making the same mistake as me, buying a chip that does not work in their C64 Reloaded.
I'm also wondering how common this issue is - does it affect the majority of 6567R8 chips, or only a rare few? I'm new to C64 hardware, but I'm happy to do my best to provide any information that can be useful for further diagnosis.