PS4 PRO - black screen, white light

[Gigabyte_PL]

Hello everyone,

I have problem with my Playstation 4 PRO. After a long break, I turned on the console and tried to play game. Game started, but after a minute it froze the console and crashed to the main menu. I tried running another game and the same problem.
Error returned: CE-34878-0 (I changed HDD)

I updated the software in the console. I unplugged the console, put it aside for a week and now I want to turn it on but there is no image. The console lights up white, there is communication via HDMI with the monitor - but only a black screen (but it detects the connection). Safe mode - a nice signal that it enters the mode but no change on the screen. I took out the disk, the CMOS battery, measured the diodes between the system and the HDMI socket and the drops were 0.450. There is no breakdown between the lines on these filters. The console has never been touched before (apart from replacing the paste). HDMI socket in perfect condition (pins on the board and connecting to the cable). Replaced HDMI cables and TV - 0 effect.

I attach log from UART.
RETIMER is dead?

Somone help me ?

[stj]

replace the clock battery and set the time/date and reset all the settings to defaults.
then try again.
it's lost the time/date.
if it's like a pc then it's lost the harddrive boot settings too
and if it's running Linux the o.s. wont boot if the files are dated newer than the machine date/time << not a lot of people know that simple fact.

if putting a fresh battery in and doing a complete reset still gives ATA errors then check your harddrive is connected or test it in something else

[stj]

one other thing,
if it's the same as PS3 then losing the battery will de-authorise the user accounts on the console.
so after changing the battery you need to login to the playstation network so it updates the certificates.
THAT may be why your games reset.

[Gigabyte_PL]

replace the clock battery and set the time/date and reset all the settings to defaults.
then try again.
it's lost the time/date.
if it's like a pc then it's lost the harddrive boot settings too
and if it's running Linux the o.s. wont boot if the files are dated newer than the machine date/time << not a lot of people know that simple fact.

if putting a fresh battery in and doing a complete reset still gives ATA errors then check your harddrive is connected or test it in something else

I already replaced the battery but it didn't help. The error still appears. I can't set anything because nothing is displayed on the screen.

[stj]

maybe you can power it on with some button combo to force a reset.
maybe some usefull info here:
https://www.psdevwiki.com/ps4/

[Gigabyte_PL]

Hi,

thanks for help. As I wrote "Safe mode - a nice signal that it enters the mode but no change on the screen. " it''s probably one way to force reset.

I can't initialize because nothing appears on the screen...
Other ideas?

[vinceroger69]

Maybe try some of the fault finding tips from in this video (1) PlayStation 4 PS4 White Light Of Death Fix - WLOD Faulty HDMI Encoder Diagnosis And Repair - YouTube

[Gigabyte_PL]

Hi,
I replaced HDMI port and Panasonic MN864729, but this did not help to solve problem.
Before replacement, the effect is the same.

APU dead ? Can I check it ? How ?