Technical Support nm-c781 onboard ram available?

M

mista

mista
Registered

reputation_scoree

salamohaleykoum brothers anyone has an onboard ram disable for the model nm-c781 motherboard?

thank you
 
M

mista

mista
Registered

reputation_scoree

the issue is power on but black screen =>on pl5903 no pulse on the input is it a clue ?
 

Attachments

  • Lenovo_IdeaPad_S145_Compal_FS441_FS540_NM_C121_Rev_0_1_schematic.pdf
    1.6 MB · Views: 1
  • nm-c781 backup.BIN
    16 MB · Views: 1
  • oscilloscope coil voltages.mp4
    80 MB
  • value coil.mp4
    37.9 MB
  • voltages coil.mp4
    42.7 MB
Ahmad Safari

Ahmad Safari

Registered
Golden

Reputation:

Attachments

  • Untitled.png
    Untitled.png
    92.8 KB · Views: 24
  • RC812 RC822.png
    RC812 RC822.png
    190.3 KB · Views: 23
  • RC811 RC821.png
    RC811 RC821.png
    115.7 KB · Views: 25
  • RC805 RC822.png
    RC805 RC822.png
    241.2 KB · Views: 25
  • Untitled2.png
    Untitled2.png
    145.4 KB · Views: 26
Last edited:
Ahmad Safari

Ahmad Safari

Registered
Golden

Reputation:

One note:
due to the fact that the IC BIOS was dark in the video, I realized that the temperature of your heater is not normal. It is either too low or too high. Set the temperature of the heater to 430 degrees Celsius and remove the ICs.
 
M

mista

mista
Registered

reputation_scoree

thank you ahmad for the info finally the issue was on the core ic

no pulse on the input coil pl5903 (cf video) detect by dso.

thank you again.
 
Who is viewing this thread?

There are currently 0 members watching this topic

Users who has read this topic

mista , Ahmad Safari , Micro-computers , teknikbilisim , user46560 , Roollice , pankajbiyani , Patrick Ribbsaeter , vicsem73 , shafeek , SSV , ebubekir soyalp , user10018 , user61858 , BAB AL HASOOB , Electronica360 , Rohit suthar , user55677 , fermoraa , Edgar Cortez Jara , user45133 , kutay , ACHOTHANI , samayalk , user39084 , user54338 , user54183 , user26853 , alfredposadas09 , onetouchcalicut , user60332

You must log in or register to reply here.

Related Repair Files

I
Technical Support Lenovo S145-15IIL Onboard ram disable
Replies
0
Views
155
ilhanb
I
user25299
Technical Support DISABLE ONBOARD RAM DA0Z8EMBC0
Replies
0
Views
116
user25299
user25299
K
Technical Support Asus F571G disable onboard ram
Replies
0
Views
87
klauscx650
K
R
Technical Support disable ram onboard asus
Replies
2
Views
148
rudy90
R
L
Technical Support Onboard RAM Disable help Lenovo V15-ADA GV451&GV551 NM-D151
Replies
3
Views
228
rafetorpak
R
user60332
Technical Support NM-B453 onboard ram disable
Replies
2
Views
116
Ahmad Safari
Ahmad Safari
Top