Hardware EDM-020 no 3.3v or 1.8v

maximus007 · Sep 24, 2024

I'm working on an EDM-020 that is missing the standby voltages, 1.8v and 3.3v.

I've checked the TPS62822DLCT and they are both getting 5v on pin 7.

I believe pin 1 is the enable pin, this sits on low.

Where does the enable pin get it's voltage from for both the TPS62822DLCT?

jkyoho · Sep 24, 2024

What resistance to ground on both output inductors?

maximus007 · Sep 24, 2024

I've figured it out I think, the 3.3v inductor from the DA9066 supplies the enable pin to both these TPS62822DLCT.

The inductor on the TPS62822DLCT that supplies the 1.8v (F7002 side) is shorted, short is not on the TPS62822DLCT side but after the inductor, also shorted caps under the WiFi chip, so WiFi chip needs changing.

The DA9066 also has a short and is not outputting 3.3v (removed the chip and short still present) so I'm guessing the southbridge is fried.

So this ps5 needs a southbridge and WiFi chip replacement and possibly a DA9066 if the 3.3v doesn't come up after the southbridge has been changed.

jkyoho · Sep 24, 2024

maximus007 said:
I've figured it out I think, the 3.3v inductor from the DA9066 supplies the enable pin to both these TPS62822DLCT.

The inductor on the TPS62822DLCT that supplies the 1.8v (F7002 side) is shorted, short is not on the TPS62822DLCT side but after the inductor, also shorted caps under the WiFi chip, so WiFi chip needs changing.

The DA9066 also has a short and is not outputting 3.3v (removed the chip and short still present) so I'm guessing the southbridge is fried.

So this ps5 needs a southbridge and WiFi chip replacement and possibly a DA9066 if the 3.3v doesn't come up after the southbridge has been changed.

Are you sure is wifi chip not the caps under the chip short out 1.8v ? I've seen many EDM020 has shorted caps under wifi chip on other side rather than actual wifi chip went bad.

maximus007 · Sep 25, 2024

jkyoho said:
Are you sure is wifi chip not the caps under the chip short out 1.8v ? I've seen many EDM020 has shorted caps under wifi chip on other side rather than actual wifi chip went bad.

Yes, I've removed the 4 caps under the WiFi chip, short present. Is it best to tackle the removal of the WiFi chip with heat from top or bottom of PCB?

danilolcs · 2024-11-13T01:02:14+0000

HELLO, I'm having the same problem with the WiFi module, when I remove it, the short in the 1.8 line disappears, I already replaced the module, it went back to normal without a short, but the PS5 still turns on and off, doing other checks and measurements, the module new one has shorted out again. Did you manage to solve it?

Hardware EDM-020 no 3.3v or 1.8v

Member

Attachments

Well-Known Member

Member

Well-Known Member

Member

New Member

Similar threads

Popular threads in this forum