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820-00928-A spillage of liquid No power no charge
- Thread starter tipoti
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Only one input fuse gets voltage at time; depending where the charger is connected.
R3105 must be soldered.
R3105 must be soldered.
You have more components damaged by corrosion.
Do you get 3V3_G3H?
All USB ports have the same behaviour?
Do you get 3V3_G3H?
All USB ports have the same behaviour?
Post exact PPBUS_G3H voltage, if exists.
Which areas have been affected by liquid?
Which areas have been affected by liquid?
C7256 is near the CPU power supply; is not a good place for liquid spill.
CPU could be dead now.
Post diode mode to ground at F7000.
CPU could be dead now.
Post diode mode to ground at F7000.
More components affected by liquid spill on USB-C areas.
Post voltage and diode mode readings on LDO outputs of all CD3215 chips.
Post voltage and diode mode readings on LDO outputs of all CD3215 chips.
Diode mode Voltage
PP3V3_UPC_XA_LDO C3108 pin 1 = 0.504 / 3.3 Voltage no short circuit
PP1V8A_UPC_XA_LDO C3106 pin 1 = 0.512 / 1.8 Voltage no short circuit
PP1V8D_UPC_XA_LDO C3105 pin 1 = 0.490 / 1.8 Voltage no short circuit
PP3V3_UPC_XA_LDO C3108 pin 1 = 0.509 / 3.3 Voltage no short circuit
PP3V3_UPC_XB_LDO C3208 pin 1= 0.509 / 3.3 Voltage no short circuit
PP1V8_UPC_XB_LDOA C3206 pin 1= 0.519 / 1.8 Voltage no short circuit
PP1V8_UPC_XB_LDOD C3205 pin 1= 0.490 / 1.8 Voltage no short circuit
UPC_XB_LDO_BMC C3204 pin 1= 0.521 / 1.1 Voltage no short circuit
PP3V3_UPC_TA_LDO CB308 pin 1= 0.506 / 3.3 Voltage no short circuit
PP1V8_UPC_TA_LDOA CB306 pin 1= 0.521 / 1.8 Voltage no short circuit
PP1V8_UPC_TA_LDOD CB305 pin 1= 0.490 / 1.8 Voltage no short circuit
PP1V1_UPC_TA_LDO_BMC CB304 pin 1= 0.316 / No Voltage no short circuit
PP3V3_UPC_TB_LDO CB408 pin 1= 0.508 / 3.3 Voltage no short circuit
PP1V8_UPC_TB_LDOA CB406 pin 1= 0.528 / 1.8 Voltage no short circuit
PP1V8_UPC_TB_LDOD CB405 pin 1= 0.488 / 1.8 Voltage no short circuit
PP1V1_UPC_TB_LDO_BMC CB404 pin 1= 0.518 / No voltage no short circuit
PP3V3_UPC_XA_LDO C3108 pin 1 = 0.504 / 3.3 Voltage no short circuit
PP1V8A_UPC_XA_LDO C3106 pin 1 = 0.512 / 1.8 Voltage no short circuit
PP1V8D_UPC_XA_LDO C3105 pin 1 = 0.490 / 1.8 Voltage no short circuit
PP3V3_UPC_XA_LDO C3108 pin 1 = 0.509 / 3.3 Voltage no short circuit
PP3V3_UPC_XB_LDO C3208 pin 1= 0.509 / 3.3 Voltage no short circuit
PP1V8_UPC_XB_LDOA C3206 pin 1= 0.519 / 1.8 Voltage no short circuit
PP1V8_UPC_XB_LDOD C3205 pin 1= 0.490 / 1.8 Voltage no short circuit
UPC_XB_LDO_BMC C3204 pin 1= 0.521 / 1.1 Voltage no short circuit
PP3V3_UPC_TA_LDO CB308 pin 1= 0.506 / 3.3 Voltage no short circuit
PP1V8_UPC_TA_LDOA CB306 pin 1= 0.521 / 1.8 Voltage no short circuit
PP1V8_UPC_TA_LDOD CB305 pin 1= 0.490 / 1.8 Voltage no short circuit
PP1V1_UPC_TA_LDO_BMC CB304 pin 1= 0.316 / No Voltage no short circuit
PP3V3_UPC_TB_LDO CB408 pin 1= 0.508 / 3.3 Voltage no short circuit
PP1V8_UPC_TB_LDOA CB406 pin 1= 0.528 / 1.8 Voltage no short circuit
PP1V8_UPC_TB_LDOD CB405 pin 1= 0.488 / 1.8 Voltage no short circuit
PP1V1_UPC_TB_LDO_BMC CB404 pin 1= 0.518 / No voltage no short circuit
You have a problem on UB300/400 area.
Be sure all surrounding resistors are good.
Check UB090 solders/traces and related resistors.
Be sure all surrounding resistors are good.
Check UB090 solders/traces and related resistors.
Seems to be the case here.
Once the chips are removed, check if short is gone; before resolder new one.
Once the chips are removed, check if short is gone; before resolder new one.
I Removed the UB300 and UB400. There is no short circuit on CB413 pin1. But RB302 pin1 is shorted. When I checked from the schematic, I saw that the value of RB302 was 0. So it is normal to show a short circuit with the ground. I removed the UB300 in vain. I understand you didn't check. It escaped my notice.
2.
When I look at the schematic, it says r3033 is not in place. But r3033 is in place and shows short circuit. the diagram shows the value as 100k. I did not understand this situation. Is it normal for it to be short circuited or should I replace it with another 100k resistor? I added the pictures about it
Also, when UB300 and UB400 are not in place, will the device turn on via other usb? Or do they absolutely have to be?
2.
When I look at the schematic, it says r3033 is not in place. But r3033 is in place and shows short circuit. the diagram shows the value as 100k. I did not understand this situation. Is it normal for it to be short circuited or should I replace it with another 100k resistor? I added the pictures about it
Also, when UB300 and UB400 are not in place, will the device turn on via other usb? Or do they absolutely have to be?
Attachments
All CD3215 chips must be placed on the board.
Compare R3033/34 and their lines to ground in diode mode.
Compare R3033/34 and their lines to ground in diode mode.
I guess you didn't read what I wrote. The value of R3033/34 appears as 100k and no stuff in the diagram, but there are these parts on the motherboard and when I measure it, the values are 0 ohms. When I remove the R3033/34 and measure its 1st pin with ground, there is no short circuit. 0.504 shows up in diode mode. Is the value of these resistors really 0 or should it be 100k as written in the diagram?
"I guess you didn't read what I wrote."
Yeah, I do NOT see any mention about R3034 in your previous post!
Did YOU read what you've wrote?
I don't have 00928 board on hand now.
But I can confirm with 00281; the same resistors are used for the same signals.
R3033 is soldered and has 0 ohm; also R3034.
BTW, R3035/36 can't be present in this case.
Yeah, I do NOT see any mention about R3034 in your previous post!
Did YOU read what you've wrote?
I don't have 00928 board on hand now.
But I can confirm with 00281; the same resistors are used for the same signals.
R3033 is soldered and has 0 ohm; also R3034.
BTW, R3035/36 can't be present in this case.
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Why don't you answer my questions and talk about other things I'm wasting my time
What does R3033/34 mean? Should I write separately? I can't explain the problem to you, I ask a question, you write something else.
" The value of R3033/34 appears as 100k and no stuff in the diagram, but there are these parts on the motherboard and when I measure it, the values are 0 ohms. When I remove the R3033/34 and measure its 1st pin with ground, there is no short circuit. 0.504 shows up in diode mode. Is the value of these resistors really 0 or should it be 100k as written in the diagram? "
" r3033 is in place and shows short circuit. the diagram shows the value as 100k. I did not understand this situation. Is it normal for it to be short circuited or should I replace it with another 100k resistor? "
please Can you write the answer to these 2 questions?
What does R3033/34 mean? Should I write separately? I can't explain the problem to you, I ask a question, you write something else.
" The value of R3033/34 appears as 100k and no stuff in the diagram, but there are these parts on the motherboard and when I measure it, the values are 0 ohms. When I remove the R3033/34 and measure its 1st pin with ground, there is no short circuit. 0.504 shows up in diode mode. Is the value of these resistors really 0 or should it be 100k as written in the diagram? "
" r3033 is in place and shows short circuit. the diagram shows the value as 100k. I did not understand this situation. Is it normal for it to be short circuited or should I replace it with another 100k resistor? "
please Can you write the answer to these 2 questions?
What is your problem???