SONY VAIO SVE141D11L dead

[Romulo]

Hi friends I need help on this sony vaio SVE141D11L board idA0HK6MB6G0 MBX 268 Rev:G. i already checked 19 v present but no 3.3v on bios chip here is the measurements of the ic

PU104 RT8207A only pin12 has 18.8v the rest of the pins have 0v

PU101 ISL88731CHRTZ

PIN 1=0V
2=0V
3=0V
4=0V
5=0V
6=4.7V
7=0V
8=0V
9=0V
10=0V
11=0V
12=0V
13=0V
14=5V
15=18.9V
16=0V
17=0V
18=4.7V
19=5V
20=0V
21=0V
22=0V
23=3.5V
24=3.1V
25=0V
26=0V
27=0V
28=0V


please help on this thanks in advance.I have attached the schematic for this model

[diif]

Re: SONY VAIO SVE141D11L dead

Check the voltages on PU102, this is the 3v/5v ic.

[Romulo]

Re: SONY VAIO SVE141D11L dead

thanks for the response i checked pu102 no voltages on each pin

[Romulo]

Re: SONY VAIO SVE141D11L dead

anyone please help on this

[mcplslg123]

Re: SONY VAIO SVE141D11L dead

If you dont have any voltage on pin16 of pu102(vin), then trace that pin for short. Measure resistance to gnd on pins of PU102 and Pu101. Is 3v or 5v coils shorted to gnd??

[Romulo]

Re: SONY VAIO SVE141D11L dead

3v and 5v coils in diode mode red probe to ground measured 0.255v both coils same as pin16 of pu102 have 0.255v and pins of pu101 both 0.455v i tried inject volts on pin16 of pu102 taking 0.6miliamps but cannot find hot components

[JaroTech]

Re: SONY VAIO SVE141D11L dead

The voltages on the PU101 are confusing, you have 5V on pin 19 and it's a ground.

[Romulo]

Re: SONY VAIO SVE141D11L dead

thanks for the response jarotech I measured again the pu101 here is the results

PU101 ISL88731CHRTZ

PIN 1=0V
2=3.5V
3=3.1V
4=0V
5=0V
6=0V
7=0V
8=0V
9=0V
10=0V
11=0V
12=0V
13=4.7V
14=0V
15=0V
16=0V
17=0V
18=0V
19=0V
20=0V
21=5V
22=18.8V
23=0
24=0V
25=5V
26=5V
27=5V
28=3.3V going down dropping to 0v

[JaroTech]

Re: SONY VAIO SVE141D11L dead

On page 32, you have the voltage VA+ (18.8V) but you don't have the voltage at VA, so, measure the voltages from all the pins for PQ226 and PQ222.

[Romulo]

Re: SONY VAIO SVE141D11L dead

thanks for the response i checked PQ222 PIN1=0 PIN2-=19V PIN3=19V but i cannot find PQ226 on the board

[JaroTech]

Re: SONY VAIO SVE141D11L dead

Sorry, it was PQ266, and what is the marking code on it?

[Romulo]

Re: SONY VAIO SVE141D11L dead

thanks for the response here is the measurements on PQ266
PIN1=0V
PIN2=0V
PIN3=19V
PIN4=0V
PIN5=0V
PIN6=19V
and when i measured the resistance with diode mode beeping mode pin1, pin2, pin4, beeping to the ground

[JaroTech]

Re: SONY VAIO SVE141D11L dead

What voltages do you have on both sides of PR300?

[Romulo]

Re: SONY VAIO SVE141D11L dead

both sides of PR300 have 19v

[Romulo]

Re: SONY VAIO SVE141D11L dead

same with PC531 both sides have 19v but PR443 one side have 19v but other side have 0v

[JaroTech]

Re: SONY VAIO SVE141D11L dead

PR300 is connected to pins 1 and 6 of PQ266, you are measuring on pin 1 of PQ266 0V. You do not measure the correct order of the pins. Find the datasheet to find out where the pins are on the chip. You can read the schematic, look at page 32, you will know how the components are connected together.

[Romulo]

Re: SONY VAIO SVE141D11L dead

sorry my mistake i was wrong measuring pin1 of pq266.here is again correct pin measurements

PIN1=19V
PIN2=0V it sparks when i touch the probe
PIN3=0V
PIN4=0V
PIN5=0V
PIN6=19V

[Romulo]

Re: SONY VAIO SVE141D11L dead

anyone can help me on this please

[JaroTech]

Re: SONY VAIO SVE141D11L dead

What voltage do you have at the RTC battery?

[Romulo]

Re: SONY VAIO SVE141D11L dead

RTC battery have 3v