Please, do not quote an entire post, visible few centimeters above.
Check around U3750/60/70.
Inspect all BT related resistors.
Check around U3750/60/70.
Inspect all BT related resistors.
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- Thread starter yair37
- Start date
Thanks but i dont see the edit post button...?
Please, use your imagination.
Copy and paste the required text between " "...
Copy and paste the required text between " "...
i was compere j3701 with good board
bad board --- (good board)
pp3v3_s4_wlan_sw 2.7v-(3.3V)
AP_RESET_L 3.2V (0.1v)
WLAN_JTAG_SEL 0.0V (0.1V)
WLAN_JTAG_TRST_L 0V (3.3V) BAD BOARD (GOOD BOARD)
WLAN_JTAG_TDI 2.6V (3.3V)
WLAN_JTAG_TMS 26V (3.3V)
WLAN_JTAG_TCK 0.1V (3.3V)
WLAN_UART_RX 2.8V (3.3V)
WLAN_UART_TX 1.1V (3.3V)
BT_ROM_BOOT_L 3.3V (0V) BAD BOARD (GOOD BOARD)
SMC_PME_S4_DARK_L 1V (3.3V)
bad board --- (good board)
pp3v3_s4_wlan_sw 2.7v-(3.3V)
AP_RESET_L 3.2V (0.1v)
WLAN_JTAG_SEL 0.0V (0.1V)
WLAN_JTAG_TRST_L 0V (3.3V) BAD BOARD (GOOD BOARD)
WLAN_JTAG_TDI 2.6V (3.3V)
WLAN_JTAG_TMS 26V (3.3V)
WLAN_JTAG_TCK 0.1V (3.3V)
WLAN_UART_RX 2.8V (3.3V)
WLAN_UART_TX 1.1V (3.3V)
BT_ROM_BOOT_L 3.3V (0V) BAD BOARD (GOOD BOARD)
SMC_PME_S4_DARK_L 1V (3.3V)
"pp3v3_s4_wlan_sw 2.7v"
U3840 could be bad, post its voltages.
Does it overheat?
U3840 could be bad, post its voltages.
Does it overheat?
"AP_RESET_L 3.2V (0.1v)"
There should be a mistake, this signal must be high normally.
There should be a mistake, this signal must be high normally.
"i will check all again now and post"
???
???
Bluetooth also not working?
You've posted many WLAN signals and voltage.
I was thinking that is the problem...
Then should be one of BT related chips.
Be sure all resistors from the area are good.
I was thinking that is the problem...
Then should be one of BT related chips.
Be sure all resistors from the area are good.
The ROM chips have firmware...
I mean U3750/60/70
U3750 must be from exact board model.
May need to change U3730.
May need to change U3730.