Hello guys!
Sry for my bad english, but i try to explain my problem.
I have PS 5 EDM-030 mb, CFI-1216A.
All standby voltages are present on board.
Starting mA is 10, to 310 and 1-2 sec drop down to 10. Looks normal.
I get 2 codes by UART: 80810001 and C0920002 (Known Unknown C0920002 (APU) - Report Findings - Possible WiFi IC Related). I check wifi sides: 3.3 and 1.8 present. No shorts.
Try to find some shorts on board, and i have one on F7502 sides. It's chip "RJ=9L 12V" (12V it's marking, not voltage). On one sides they have 1.95v and 5v, on other side - short on big cap.
Like this chip stay near HDMI and they don't have short there.
I try to remove big cap and this chip - short is not gone.
Mb someone know, there i need to check more?
And code from UART. They say short on WiFI ic, but all V is present good, fuse not blow.
On board i have J20H100 wifi chip. try to find new one to replace, and i see that on CFI-12xx board J20H104 chip.
And now I don't know what chip I need.
Sry for my bad english, but i try to explain my problem.
I have PS 5 EDM-030 mb, CFI-1216A.
All standby voltages are present on board.
Starting mA is 10, to 310 and 1-2 sec drop down to 10. Looks normal.
I get 2 codes by UART: 80810001 and C0920002 (Known Unknown C0920002 (APU) - Report Findings - Possible WiFi IC Related). I check wifi sides: 3.3 and 1.8 present. No shorts.
Try to find some shorts on board, and i have one on F7502 sides. It's chip "RJ=9L 12V" (12V it's marking, not voltage). On one sides they have 1.95v and 5v, on other side - short on big cap.
Like this chip stay near HDMI and they don't have short there.
I try to remove big cap and this chip - short is not gone.
Mb someone know, there i need to check more?
And code from UART. They say short on WiFI ic, but all V is present good, fuse not blow.
On board i have J20H100 wifi chip. try to find new one to replace, and i see that on CFI-12xx board J20H104 chip.
And now I don't know what chip I need.
Last edited by Barykla,
