Toshiba L650 BL10 - no 3.3V and 5V

[amstel]

Hi Guys,

Platform BL10 - 6050A2332401 - does not charge and does not react for a power button.
The laptop takes current 0.0A.

Charger U6000 MAX17435:

3 DCIN - 18.77 V
4 LDO - 5.39 V
10 ACOK - 0 V
14 PDSL - 26.22 V
19 ACIN - 1.65 V
22 VCC - 5.39 V
24 EN - 0 V

3V/5V U6200 TPS51125:

1 ENTRIP1 - 0 V
4 TONSEL - 3.28 V
6 ENTRIP2 - 1.16 V
16 VIN - 18.83 V
17 VREG5 - 4.91 V

The 3.3V voltage shows only for 500ms and disappear.
Replaced:CPU,RAM,Bios for EC and HM55.

Please can you advise?

[mohamed.mostafa]

Re: Toshiba L650 BL10 - no 3.3V and 5V

i remember that i replaced the fuckn "max17435" many times in toshiba . try

[Dimitrios]

Re: Toshiba L650 BL10 - no 3.3V and 5V

Hello! I was looking for 3 days to solve a problem on almost the same board as you. Can you post the VREG3 pin10 U6200? Maybe TPS is defective. Also try to check resistors near 3.3V path. Do you have a schematic?

[spidey]

Re: Toshiba L650 BL10 - no 3.3V and 5V

Hi Guys,

Platform BL10 - 6050A2332401 - does not charge and does not react for a power button.
The laptop takes current 0.0A.

Charger U6000 MAX17435:

3 DCIN - 18.77 V
4 LDO - 5.39 V
10 ACOK - 0 V
14 PDSL - 26.22 V
19 ACIN - 1.65 V
22 VCC - 5.39 V
24 EN - 0 V

3V/5V U6200 TPS51125:

1 ENTRIP1 - 0 V
4 TONSEL - 3.28 V
6 ENTRIP2 - 1.16 V
16 VIN - 18.83 V
17 VREG5 - 4.91 V

The 3.3V voltage shows only for 500ms and disappear.
Replaced:CPU,RAM,Bios for EC and HM55.

Please can you advise?

"24 EN - 0 V" also "1 ENTRIP1 - 0 V 6 ENTRIP2 - 1.16 V" check why?
check schematic, looks like thermal protection.

[amstel]

Re: Toshiba L650 BL10 - no 3.3V and 5V

TPS51125 was defective.
Also there was a shortcut in line +5VA (shorted cap C6200 ).
Thank you guys.