The ps5 beeps on powerbutton, bluelight for a few seconds and then turns off again, current draw from plugin is ~310mA really shortly then goes back to ~9 mA. Probed pretty much all fuses and all seem fine, no caps shorted as far as i can find. Heat cam shows the SSD controller IC heating up on powerbutton press. According to the standby boot sequence troubleshooting (from fixmyapp on youtube) it points to a bad SSD controller.
Voltages at TLV62090RGTT seem fine aswell as testing the HDMI in diode mode. Also checked for liquid metal leak but nothing underneath the protective cover.
Is there anything i should check before trying to replace the CXD90062GG ssd controller IC since that would be my first time replacing a bga (will practice before attempt on some random other boards).
Would love to get some extra advice!
Before starting to swapping chips I would try UART or dump the NOR ic to see the last error codes. Maybe the error codes are pointing in a specific direction.
Damn thanks, didnt even think of that (first time trying to repair a ps5 or any smd board really). It shows me error code: 80801120 RAM gddr6 bank 6. I guess i should replace that bank then, gonna have to find a replacement first though. I dont think im able to reflow/reball it without proper tools right?
Without proper tools and experience in desoldering, cleaning and resoldering BGA ic, this may end in a mainboard for the donor pile.
Yeah thats pretty likely though ill give it a try, got the ps5 for free from a friend after he brought it to a repair shop that said they couldnt fix it. Ill do some more research and get some experience on some ancient boards/gpus i have hoarded and give it my best. Anyways, youve been of great help, thank you!
After replacing the ic with a reballed one from the same manufacturer(micron) but the uart error stays the same (after clearing errors)
The first few letters printed on the chip are different from mine, could that be a problem (since i only replaced one out of the 8 ics)?
I also double checked the apu for cracks and lm spills but it seems pristine.
Thanks again
The marking of a Micron gddr6 ram on a PS5 is normally D9XKV or D9ZPL for the MT61K512M32KPA-14C.
Thanks I have the D9XKV though the one I have is IAB47 D9XKV and the one I got was OWB47 D9XKV. I presume that shouldn’t be an issue? I ordered some balls and a stencil and will try swapping banks to find out if the issue really is the ram ic or something else like the apu.
The numbers beside the part markings are mostly codes for week month year of production. So if it has D9XKV the chip should match.
Swapping with the neighbor ram ic is a good idea, to check if the issue is ram ic related or APU related.
Thanks again, I’m in the process of cleaning the old ic for reballing and noticing some pads are awfully dark. Im afraid solder won’t stick to the dark pads. Is this what is refered to as black pads? And if so is there anything I can do so I can reball it?
Can’t embedd the picture I think so here is the imgur link a/urHkCCW . Couldn’t get the link to work, hopefully it works like this
Good oxidized pads. 
I would use tweezers for light scrapping the surfaces of the grey/dull pads and than applying flux and solder and see if the solder sticks to the pads again.
I don’t recommend using direct the soldring iron to scrape till they start to taking solder again, because it mostly leads to damaging the soldermask around the pads.
Thanks worked perfectly! I just very gently scraped it with a tiny knife on your recommendation. I’ll keep the post updated when I swapped and recalled ram chips.
https://imgur.com/a/S5RfFrD
Unfortunately no dice, still bank 6 error. Probably an issue with APU or its connection to the board.