• Sony VAIO VJP132C11N can't turn on

It is currently 12 May 2025, 04:38

 [SOLVED] Sony VAIO VJP132C11N can't turn on

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#21 Re: Sony VAIO VJP132C11N can't turn on

by cygron • 24 August 2022, 15:28
You're right. PQ33 is shorted. Remove PQ33 and short circuit is gone. I replace PQ33 with N-Channel Mosfet. I think PQ31 is also shorted. When i resolder PQ31, laptop can't turn on. Without PQ31, laptop is turn on normally to windows. Only battery problem exit.

Re: Re: Sony VAIO VJP132C11N can't turn on

by Google Adsense [BOT] • 24 August 2022, 15:28

#22 Re: Sony VAIO VJP132C11N can't turn on

by matic • 24 August 2022, 15:37
Measure the voltages to ground on all pins of transistors PQ33, PQ35 with the transistor PQ31 removed from the board.

Transistor PQ33 pin count:
Image

#23 Re: Sony VAIO VJP132C11N can't turn on

by cygron • 24 August 2022, 16:07
PQ33
Pin 1 - GND
Pin 2 - 2.8V
Pin 3 - 0V

PQ35
Pin 1 - GND
Pin 2 - 0V
Pin 3 - 0V
Pin 4 - 0V
Pin 5 - 14.7V
Pin 6 - 0V

#24 Re: Sony VAIO VJP132C11N can't turn on

by matic • 24 August 2022, 19:50
Remeasure the following voltages to ground with the transistor PQ31 removed from the board.
- On pins 1, 2 of chip PU13.
- On all pins of chip PU11.

#25 Re: Sony VAIO VJP132C11N can't turn on

by cygron • 25 August 2022, 03:47
PU13 pin 1 - 0V and pin 2 - 0.12V
PU11 pins -
pin 1,2,3,4 - 0V
pin 5,7,8 - 2.8V
pin 6 - 2.3V

#26 Re: Sony VAIO VJP132C11N can't turn on

by matic • 25 August 2022, 13:53
Measure the resistance to ground on pin 1 of chip PU11 with the RTC battery disconnected from the board.

#28 Re: Sony VAIO VJP132C11N can't turn on

by cygron • 27 August 2022, 11:03
The resistance to ground on pin 1 of chip PU11 with the RTC battery disconnected - about 7M

PU13 pin1 - 0V and pin2 - 2.2V
PU11 pins
Pin 1, 2, 3, 8 - 3V
Pin 4, 5, 6, 7 - 0V

#29 Re: Sony VAIO VJP132C11N can't turn on

by matic • 27 August 2022, 13:05
Solder the transistor PQ31 back to the board and check if the machine works with the main battery connected.

#30 Re: Sony VAIO VJP132C11N can't turn on

by cygron • 28 August 2022, 09:39
When resolder PQ31, laptop can't work with or without main battery connected.

#31 Re: Sony VAIO VJP132C11N can't turn on

by matic • 28 August 2022, 11:27
Remeasure all voltages from post #28 with soldered PQ31 and with battery + power supply connected.

#32 Re: Sony VAIO VJP132C11N can't turn on

by cygron • 28 August 2022, 12:31
PU13 pin1, 2 - 0V
PU11 pins
Pin 1, 2, 3, 8 - 2.8V
Pin 4, 5, 6, 7 - 0V

#33 Re: Sony VAIO VJP132C11N can't turn on

by matic • 28 August 2022, 12:55
Measure the voltages to ground on pins 1, 3, 4, 6 of transistor PQ31 with the battery + power supply connected in the following cases:
a) Transistor PQ35 soldered to the board.
b) Transistor PQ35 removed from the board.

#34 Re: Sony VAIO VJP132C11N can't turn on

by cygron • 28 August 2022, 13:34
Wtih or without PQ35,
PQ31 pins ,
Pin 1 - 0V
Pin 3 - 19.5V
Pin 4 - 19.5V
Pin 6 - 0V

#35 Re: Sony VAIO VJP132C11N can't turn on

by matic • 28 August 2022, 14:35
- Measure the resistance between pin 1 and pin 4 of transistor PQ30.
- Measure the resistance to ground on pin 1 of transistor PQ31.

If both resistances are high (in kΩ range or greater), remeasure the voltages to ground on all pins of chip PU11 with the transistor PQ35 removed from the board (power supply + battery connected).

#36 Re: Sony VAIO VJP132C11N can't turn on

by clops35 • 28 August 2022, 15:03
Zmierz napięcia na n.1, 2, 3, 5, 6 PQ36.

#37 Re: Sony VAIO VJP132C11N can't turn on

by cygron • 30 August 2022, 14:21
The resistance between pin 1 and pin 4 of transistor PQ30 is 140K
The resistance to ground on pin 1 of transistor PQ31 is 172K

PU11 pins with the transistor PQ35 removed -
Pin 1,2,3,8 - 2.8V
Pin 4,5,6,7 - 0V

PQ36 pins -
Pin 1,3 - 0V
Pin 2 - 2.8V
Pin 5 - 2.6V
Pin 6 - 0V

#38 Re: Sony VAIO VJP132C11N can't turn on

by matic • 30 August 2022, 14:27
Measure the voltages to ground on pins 1, 5 of transistor PQ31 with the transistor PQ35 removed from the board (power supply + battery connected).

#39 Re: Sony VAIO VJP132C11N can't turn on

by cygron • 30 August 2022, 14:43
PQ31 pin 1 - 0.025V and pin 5 - 0V

#40 Re: Sony VAIO VJP132C11N can't turn on

by matic • 30 August 2022, 14:55
Measure the voltages to ground on all pins of transistor PQ38 with the transistor PQ35 removed from the board (power supply + battery connected).
Transistor PQ38 pin count:
Image

Re: Sony VAIO VJP132C11N can't turn on

by Google Adsense [BOT] • 30 August 2022, 14:55
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