Lenovo g500 - LA-9631P boardview needed

[ktmmotocross]

Hello.
Have this Lenovo g500 that have no 3,3Valw and 5Valw. i check that it dont have ENable signal. it comes from PR402 right from B+ so i think PR402 is bad, but cannot find it because of no marking on board so i need boardview

[piernov]

Re: Lenovo g500 - LA-9631P boardview needed

+3VLP is enabled by the ENLDO_3V5V indeed coming from PR402. +5VLP is always enabled.
However +3VALW and +5VALW are enabled by 3V5V_EN which comes from the EC.
Note that the pinouts for PU401 and PU402 are wrong in LA-9631P schematics, refer to Compal LA-9535P for the correct one.

[ktmmotocross]

Re: Lenovo g500 - LA-9631P boardview needed

thanks for hint mate. but how to find that bloody PR402?

[ktmmotocross]

Re: Lenovo g500 - LA-9631P boardview needed

come on guys. i canot stay there just for one resistor

[ktmmotocross]

Re: Lenovo g500 - LA-9631P boardview needed

no boardview?

[mcplslg123]

Re: Lenovo g500 - LA-9631P boardview needed

On La-9912P which has similar schematic, this resistor PR402 is on the other side(bottom) but not populated. Will it help??

[SMDFlea]

Re: Lenovo g500 - LA-9631P boardview needed

Maybe https://www.elvikom.pl/lenovo-g500-v...tu-t46658.html

[ktmmotocross]

Re: Lenovo g500 - LA-9631P boardview needed

Maybe https://www.elvikom.pl/lenovo-g500-v...tu-t46658.html

Mate i wanna kiss u for all help u giving me

resistor have badly coroded one end, so i must replace it. Now have 3,3VALW
but 5VALW is only 0.9V so finding continues

[SMDFlea]

Re: Lenovo g500 - LA-9631P boardview needed

[QUOTE=ktmmotocross;883048]Mate i wanna kiss u for all help u giving me

No thanks,unless you`re female,over the age of 18

[ktmmotocross]

Re: Lenovo g500 - LA-9631P boardview needed

+3VLP is enabled by the ENLDO_3V5V indeed coming from PR402. +5VLP is always enabled.
However +3VALW and +5VALW are enabled by 3V5V_EN which comes from the EC.
Note that the pinouts for PU401 and PU402 are wrong in LA-9631P schematics, refer to Compal LA-9535P for the correct one.

Dont have +5VL, only VL and have short on it, even without pu402

[ktmmotocross]

Re: Lenovo g500 - LA-9631P boardview needed

damn, still short even without pu201, must be bad capacitor

[ktmmotocross]

Re: Lenovo g500 - LA-9631P boardview needed

shit, cannot find that PC430 anywhere

[ktmmotocross]

Re: Lenovo g500 - LA-9631P boardview needed

he was on the other side of board. Now have VL 1.0 steady, but cannot find its datasheet if it is good

[SMART TECH]

Re: Lenovo g500 - LA-9631P boardview needed

CX20757 VREF_1.65V Pin number 29 missing, please suggest what i do?

[muaadc]

Re: Lenovo g500 - LA-9631P boardview needed

Hello.
Have this Lenovo g500 that have no 3,3Valw and 5Valw. i check that it dont have ENable signal. it comes from PR402 right from B+ so i think PR402 is bad, but cannot find it because of no marking on board so i need boardview

bro thats resistor near the sw6

[Anchar777]

Re: Lenovo g500 - LA-9631P boardview needed

Maybe https://www.elvikom.pl/lenovo-g500-v...tu-t46658.html

Thank you very much! helped a lot!

[ToMiBoY]

Re: Lenovo g500 - LA-9631P boardview needed

Hello.
Have this Lenovo g500 that have no 3,3Valw and 5Valw. i check that it dont have ENable signal. it comes from PR402 right from B+ so i think PR402 is bad, but cannot find it because of no marking on board so i need boardview

here mate

[maurovalero]

Re: Lenovo g500 - LA-9631P boardview needed

hi, i have a similar problem, pr402 was broken, i replaced it, and have 3,5, but dont have 3v in bios spi, someone can helpme

[SMDFlea]

Re: Lenovo g500 - LA-9631P boardview needed

hi, i have a similar problem, pr402 was broken, i replaced it, and have 3,5, but dont have 3v in bios spi, someone can helpme

+3V_ROM , VCCSPI ,PCH_PWR_EN .Check KBC voltage.+3VLP,+3VALWP .Read post #2 !!

[famat]

Re: Lenovo g500 - LA-9631P boardview needed

Lenovo g500 - LA-9631P its working but not displaying somebody help