u/PopEmergency227

So i got a new PS4 Pro that is in good condition condition, owner used it and stored it,

it is on firmware 7.55 for obvious reasons

Anyway it had a jet fan so i decided to change the thermal paste with a ptm varient to see what all the hype os about

While i had the console this disassembled i decided to replace the CMOS battery the original had a panasonic with 3.02 volts i replaced it with energizer new that has 3.2v

After i replaced the battery i can no longer access trophies and keep getting error ( CE-30391-6 ) Everywhere online it's connectivity issue but the consile connects to wifi and bluetooth normally

I took the console apart again and checked the CMOS prongs and voltage even measured from top of battery to motherboard ground ( the outer copper ring ) and got 3.2v so i assume the battery is fine ? Could the battery be bad or did something happen to the console ?

Any advice is appreciated.

So i have this ps4 pro thats on firmware 7.55 for obvious reasons.

I bought it from someone that had it only stored never used it much.

The console is in good condition the only issue it had was over heating in games i get really loud fan and upto 83°C on the CPU and 80 on the SOC

Took it apart and found the thermal paste to have pump out, the paste on the sides was really soft not dried ( just pumped out ) so i decide to change it with a ptm varient you can see in the photos and while i was at it i thought to change the CMOS battery with a new one ( old one had 3.02 volts ) not used too much and is good, but since i am already this far in might as well change it

Which brings us to the issue Ever since i changed it i cannot access trophies and get error (CE-30391-6) Everytime i unplug the console the time resets to 1/1/1970 previously it didn't

I took it apart and checked the cmos battery voltage at the terminal points on the motherboard i still get the 3.2 volts, checked the voltage from top side of the vattery to the board ground ( the outer copper ring ) i got 3.2 volts The console works fine and games well but how do i fix this issue ? Thabks everyone.