Re: Lenovo g50-30 self power up and dark screen

thanks Luaina,

but this model have integrated video on cpu.

and its power up (just led) when charger is plugged .

Re: Lenovo g50-30 self power up and dark screen

thanks for reply

pyry: nothing on screen ,nothing on external screen vga port.

piernov :bios is mi first thing ,i use arduino+serprog to flash but 3.3v chip,
this chip is 1.8v need to find the way to program 1.8v chip...,but i have replaced the chip it one from another motherboard ,same motherboard and same bios the symptoms still the same.

cpu (pl902)= 0.945v
on 5v (pl402)=5.18v
on 3v (pl401)=3.480v

3v at 3.480v its normal ?

thanks

hi all,

aim trying to repair a lenovo g50-30

black screen ,just led and dvd start.
hdd not turn on and wen i plug the charger its power on (just leds..)

any idea?

thanks

Re: Acer 7720ZG disable 3d card

ok thanks for help

Re: Acer 7720ZG disable 3d card

RP4 exist ,RP3 nothing

Re: Acer 7720ZG disable 3d card

in page 10 ,i read "change to 0hms to use PM chip" i found the resistors in motherboard do you think if i short the resistors i got it working ?...

Re: Acer 7720ZG disable 3d card

Icl50 la-3551p
rev 3.0

i found this:

[URL="https://www.informaticanapoli.it/download/SCHEMIELETTRICI/ACER-EMACHINES/Acer%20Aspire_5315_5720_7720_Compal_LA-3551P.pdf"]https://www.informaticanapoli.it/download/SCHEMIELETTRICI/ACER-EMACHINES/Acer%20Aspire_5315_5720_7720_Compal_LA-3551P.pdf[/URL]Re: Acer 7720ZG disable 3d card

Icl50 la-3551p
rev 3.0

i found this:

[URL="https://www.informaticanapoli.it/download/SCHEMIELETTRICI/ACER-EMACHINES/Acer%20

Re: Acer 7720ZG disable 3d card

hi caspian,

thanks for reply ,unfortunately i haven't found it,if some one ...

hi all,

i have a acer 7720zg the 3d nvidia card is dead ,this model have a intel graphic chip too.

any one know the way to activate intel card ?

i have removed the nvidia card and got blank screen ...

thanks

Re: Asus x55vd Rev 3.1 wont power up

not the cap ,the resistor is too small to my soldering iron i get new tools Thursday

Re: Asus x55vd Rev 3.1 wont power up

its just connected in parallel to a resistor connected to pin 7 of rt8206L
i go to try unsolder capacitor an test it ,i hope its the capacitor too .

in motherboard the rt8206l its the primary source of the 3v,5v ?

thanks

Re: Asus x55vd Rev 3.1 wont power up

hi Caspian thanks for reply

not all i don't have removed cmos battery,

i have 5 oms on this capacitor (1uf_16v) connected to pin 19 (Vpp) of the rt8206L.

Hi All im trying to repair a Asus x55vd,

first power on led but no display no access to drive etc...
on boot, fan speed its high and after few moment its turn off itself.
and can't power up again until waiting many time not connected to charger and battery removed
otherwise led power up for 1 sec and shut off immediately.

i have flashed bios with arduino+serprog.
it boot and display working windows start but the problem speed fan high
an power off itself still.

think its a capacitor problem i read where [URL="https://www.elvikom.pl/asus-r503v-mb-x55vd-strange-short-on-chip-rt8207m-t50576.html"]https://www.elvikom.pl/asus-r503v-mb-x55vd-strange-short-on-chip-rt8207m-t50576.html[/URL]...

Re: New Members - please post your introductions here

hi All ,i like to fix anything wont work and this forum is a gold mine