It seems that the answer is no, 1v1 measuring the PP1V1_UPC_XB_LDO_BMC on either USB port is 0v.
That means both CD3215 chips are bad?


[TABLE="align: left, width: 75"]
[TR]
[TD][B]Step[/B][/TD]
[TD][B]Source[/B][/TD]
[TD][B]Name of Net[/B][/TD]
[TD][B]Voltage[/B][/TD]
[TD][B]My Voltages[/B][/TD]
[/TR]
[TR]
[TD]1[/TD]
[TD]J3300[/TD]
[TD]PP20V_USBC_XB_VBUS[/TD]
[TD]5V[/TD]
[TD]5v[/TD]
[/TR]
[TR]
[TD]2[/TD]...

There are no shorts around both CD3215 chips, I tested all caps around them.
Yeah this next part was a little confusing, I checked CHGR_EN_MVR (R6960). Wiki doesn't tell you what the signal should be? I researched and found it should be 5v as per [B]PPBUS_G3H[/B]​ which is reading 5v, is that correct ? I'm reading 0.001v or 00.58mv at CHGR_EN_MVR (R6960). I'm assuming thats too low, so it all seems to point to ISL9240 (U7000.)There are no shorts around both CD3215 chips, I tested all caps around them.
Yeah this next part was a little confusing, I checked CHGR_EN_MVR (R6960). Wiki doesn't

[B]Check PPBUS_G3H Voltage = [/B]0.428v
[I]≈0 V = Short to ground or absent voltage due to a creation proble[/I][I]m. [B]Proceed to repair steps below for shorted or absent PPBUS_G3H voltage[/B].[/I]

Just out of interest I measured [B]PP3v3_G3H_RTC Voltage on C3100 and C3200 both 0v, [/B]
however [B]PP3V3_UPC_XB_LDO and XA are both showing 3.3v (C3108 & C3208)[/B]

[B]PPBUS_G3H Absent or Low with No Short[/B]
C7024 or C7026 both showing 5v

[B]CD3215 Troubleshooting[/B]
R7021, R7022, R7061, R7062 all showing 1.2-1.5 ohms
...

Thank you! I'll run through that and see how I go.

Hi mon2,

[B]PPBUS_G3H[/B] = 8.3 mohm and droppingHi mon2,

[B]PPBUS_G3H[/B] = 8.3 mohm and droppingHi mon2,

[B]PPBUS_G3H[/B] = 8.3 mohm and dropping

Hello,

I am trying to repair the laptop mentioned in the title. I have been searching posts looking for readings similar to mine but cannot find any. I am fairly new at this so please be gentle 🏳

History:
No water damage, screen cracked. Laptop doesn't draw any amps on USB meter from either USB C port. Removed the board, same no amp draw. No standby light on the board. Apart from dust board looks great! No obvious visible burnt components. At the moment I dont have a Mac charger, its on the way. I am using a samsung USB C charger which should get the board on...

Hello,

I'm fairly new to electronics repair (ER). I have had an interest in electronics all my life, ever since I started pulling stuff apart as a kid to see how they worked
However things were alot simpler then

I'm 49 now, in I.T and am re-learning ER as a hobby. Glad to find a community like this willing to help.

Cheers,

Nader...