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A1502 820-4924-A ISL6259 PIN 19 GET HOT.
- Thread starter RepairxD
- Start date
Check R7195/96.
You can play with their values to adjust output voltage.
You can play with their values to adjust output voltage.
Last edited:
If you remove R7191, this power supply doesn't send any voltage to U7100.
It only uses the internal VDD voltage now; this may not support the current required by VDDP.
It only uses the internal VDD voltage now; this may not support the current required by VDDP.
yes, you are right. is there any else which generate voltage on u7100 pin 19, because i have removed R7191, R7101, C7101, C7100. then checked voltage on pin 19, i am getting 6.7 to 6.9 voltage still. and i have fixed U7100 from working board-in that board on pin 19 it hase 5.01 voltage.
Put back R7101 and both caps.
Then post basic voltages of U7100: 1, 2, 3, 9, 12, 13, 14, 15, 17, 19, 20, 27.
Then post basic voltages of U7100: 1, 2, 3, 9, 12, 13, 14, 15, 17, 19, 20, 27.
If you left the pin 19 on air and still get diode mode reading, then you have a problem with the copper layers.
Remove F7140 and check C7140 voltage.
"15-4.0v"
Are you sure?
Then check R7150-2 and their traces.
Are you sure?
Then check R7150-2 and their traces.