Technical Support A - 1534

[Tara Laptops]

mother board part number - 820-00045. Machine was working fine , suddenly it turned into no display. Cpu heats fine . I feel somewhat more heating. EDP_BKLT_EN is missing ie: 0v. This signal comes from cpu. I feel maybe bios is corrupt. Not sure . Also this is a different type of bios. Pls guide me how to program it. Also through another forum it came to my knowledge that emc and serial number is important. Pls guide me. Thanks

 

[Vahab Hemmati]

send original bios backup

 

[Ahmad Safari]

FOR READ BIOS CHECK ATACHED FILE

 

[Tara Laptops]

but i do not have any idea of , how to read and program such type of bios. any demo clip. pls share

 

[Ahmad Safari]

I don't have a video.
You have to program the IC by drawing a wire from the IC pins to the programmer.
I specified the base numbers in the picture

 

[Patrick Ribbsaeter]

Have u checked
ALL_SYS_PWRGD?
CPU_VR_EN?
CPU_VCCST_PWRGD

 

[Tara Laptops]

cpu is heating ok. yes somewhat more heating. no display.

 

[Patrick Ribbsaeter]

Check DDR IC for ram... The most likely a problem around that IC... Check output on the coil for RAM.
Check LPCFRAME_L, and corresponding <address(0, 1, 2, 3, 4)> lines...
Check SMC_LID... it might be stuck in RSTMODE, need to be 3v3.

 

[Tara Laptops]

ok. Thanks