Ps5 error uart 80801180

Hello everyone, I found myself with the error 8080 1180, although I changed the memory 3 times, very similar. To be sure that it didn’t come from my work I took the 7 which I put in place of the 8 and the 8 in place of the 7, always the same error! so it doesn’t come from me. I tested the components around the r.a.s memory as best I could. Looking with the thermal camera after pressing the power button I see APU turning red but not the memory. Conclusion APU dead?
thank you for your help