[SOLVED]820-3536 No Power, Green Light On Charger

[soulsby29]

Hi,

I have a 820-3536 that hasn't had any water damage and shows a green light on the charger but does not power on. PPBUS_G3H, PP3V42_G3H, PPVRTC_G3H are all present and correct. Testing PP5V_S5 and PP3V3_S5 I noticed their voltages were pulsating.

I replaced U7100 but it made no difference it is still doing the same thing. Are there any other components that can cause this issue?

Thanks

 

[dukefawks]

PPBUS stable? Without battery connected light should go green then orange.

 

[soulsby29]

Yes it stays stable at 12.4 volts and goes green then orange.

 

[dukefawks]

As 3V3_s5 is pulsing check what S5_PWR_EN is doing. Also check all rails for shorts.

 

[soulsby29]

I figured out what was wrong. It had a short on 3V3_S4 caused by C2950. I replaced it and it is working fine now. Thanks for your help.