PS4 Disk problem

[A1yn88]

Hi everyone, I got to repair a PS4 game console with the problem of reading discs, initially I thought the laser was defective, I changed it, the same thing, after which I further opened the console and discovered what is in the pictures . I changed the bd7764muv chip because it had a missing pin, the problem is that it still doesn't work, all the pins are connected, I checked many times and I don't really know what else to check. Can anyone help me with what voltages I should have besides this chip? Thanks.

[petehall347]

Re: PS4 Disk problem

hard to see which way round you fitted the chip but looks wrong to me

[A1yn88]

Re: PS4 Disk problem

There are no pictures of the best quality but it is not wrong.

[diif]

Re: PS4 Disk problem

Did you check the ceramic caps for shorts ?

[stj]

Re: PS4 Disk problem

impressive mess,

as someone who fixes a lot of battery-damaged boards, the first thing to check is all the through-hole plating.

[A1yn88]

Re: PS4 Disk problem

Did you check the ceramic caps for shorts ?

Checked, everything seems fine.

[A1yn88]

Re: PS4 Disk problem

impressive mess,

as someone who fixes a lot of battery-damaged boards, the first thing to check is all the through-hole plating.

Checked.

[Samsir]

Re: PS4 Disk problem

Hi everyone, I got to repair a PS4 game console with the problem of reading discs, initially I thought the laser was defective, I changed it, the same thing, after which I further opened the console and discovered what is in the pictures . I changed the bd7764muv chip because it had a missing pin, the problem is that it still doesn't work, all the pins are connected, I checked many times and I don't really know what else to check. Can anyone help me with what voltages I should have besides this chip? Thanks.

Hi,
Just some thoughts..
When you say "it doesn't work", do you refer to the disc is not spinning or that the disk is starting up normally when you insert a disc, but you get an "unknown disc" message?

Can confirm your bd7764 is on the board in the correct direction.
I would also check the big Reneas chip next to it. Check for loose pins and corrosion.

Also check F6001 and F6201, located on the flip side of the board next to the (white or black) connector. They are normally marked "N".

If all this checks out, with everything connected, are you able to update the FW on the PS4? If you are able to update, it is an error inside the disc drive. If not, also check the flat cables to the disc. They are very brittle and break easily.

Cheers