I’ve got 5 V going into the RPI. But nothing is being displayed ?so I’m pretty sure the main board is OK. Is the SD card unique to the RPI/Main board? HF signals is indicating that is the case. They said I got a new SD card which I did not get hopefully that’s all it is
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If I had to replace the RPI I know it’s a version 4 Is there a sub model like a B? ?How many gigs would you go
