PS5 does not start. short beep and blue LED lights up for about 3 seconds

PS5 Questions PS5
1

Hello, I have an EDM-10 board on which the HDMI transmitter was replaced. The console beeps once and the blue LED stays on for about 3 seconds, then turns off. On the front side of the board, I measure a standby voltage of 1.8 V. According to a repair PDF, this voltage should be 3.3 V. The power-up sequence appears to be normal: current draw first rises to about 320 mA, then drops to around 7 mA.

Stby Voltage
Stby Voltage1157×599 217 KB

2

I don’t think that’s the problem. Can you explain what was replaced?

3

Hi Repairman,

The HDMI transmitter has been replaced. However, I have just noticed that a resistor is missing. It is part of the console’s startup circuit connected to the power push button.:face_with_diagonal_mouth:

Do you know what value this resistor should have?

IPC_2026-04-24.10.01.33.0100
IPC_2026-04-24.10.01.33.01001920×1080 300 KB

4

120 ohm 0201 resistor, should be same value as the one still there.

FYI, the left resistor is for power button, where the right one you pointed is for eject button(not present if you have a digital model)

5

Hi Jkyoho,

Thank you for the update. It is a Digital Edition.

When I press the power button, the PS5 beeps once and the blue LED turns on. After a short time, the console shuts down again.

Some power-on voltages are missing; please see the measurements below.

When I press the power button, only the SSD controller and the Southbridge get warm, as seen with an thermal cam.

poweron1
poweron11162×591 181 KB

poweron2
poweron21155×591 169 KB

.

6

any UART code reading?

7

Yes

00 24.04.2026 23:44:45 E3122336 High Not found in list. Report Findings.
|-(OK 00000000 E3122336 FFFFFFFF FFFF0000 00000000 2004 0000 0000 0000:71)

01 24.04.2026 23:44:45 E2E00000 High Not found in list. Report Findings.
|-(OK 00000000 E2E00000 FFFFFFFF FFFF0000 00000000 2004 0000 0000 0000:74)

02 24.04.2026 23:44:45 E1E00000 High Not found in list. Report Findings.
|-(OK 00000000 E1E00000 FFFFFFFF FFFF0000 00000000 2004 0000 0000 0000:73)

03 24.04.2026 23:44:45 E2F00010 High Not found in list. Report Findings.
|-(OK 00000000 E2F00010 FFFFFFFF FFFF0000 00000000 2004 0000 0000 0000:76)

04 24.04.2026 23:44:45 E1F02280 High Not found in list. Report Findings.
|-(OK 00000000 E1F02280 FFFFFFFF FFFF0000 00000000 2004 0000 0000 0000:80)

05 24.04.2026 23:44:45 80C0012D Low EMC - EMC Watch Dog Timer Error
|-(OK 00000000 80C0012D FFFFFFFF FFFF0000 00000000 2004 0000 0000 0000:7A)

8

do you think it´s a problem whit APU?