Search results

I have checked down to s0 voltages all are present, ppbus_g3h is 12.59v. When Powered up it draws 330ma and then fan comes on full speed. Cpu heats but no usb activity. No sign of spillage. I checked Spi term resistors all ok. Charger led turns from green to orange. I tried several efi dumps...

I tried that but its actually not heating

Board was drawing 14ma initially pp5v_s3 was partially short, c7600 was reading 2v, so removed C7600 and u7600 5v was present. After swapping out both components unit rises to 200ma . L7320 and L7310 both read .5 ohm . Would it be safe enough to say the cpu is dead on this?

Any way to tell 100% ?. Voltages seem to be present except for PP3V3_S4SW_SNS 0v and Cpu voltages. L7220 is reading 4ohms to ground, L7210 is 5 ohms,L7410 8ohms.

I have a board here that had a small amount of liquid spill around J8500 . There is a short on F7000. I lifted F7000 and the short is on point 2 of the fuse the opposite side to the U7000 is fine. Found U7210 to be short , replaced . Board now drawing 20v 270ma with no voltage on L7210,L7220...

Its a tough one. Im not familiar with this board model. Thanks for your input.

I have tried a few that poster said were fully tested but with the same issues.There may be some signals missing that Im not aware of.

No none at all

?

Possibly but it looks like it was broken off rather than desoldered. I have gone over the board with the microscope and I cannot see any other issues. https://drive.google.com/file/d/1ugKI0CJmnJ-xhNDMRrhAatSjJ_uzHFGl/view?usp=sharing Here is the original dump if you could look over it if you...

I found one that supposedly tested 100% but now the unit draws 550ma then drops to 450ma with the same result ie no usb activity and no external or lcd output. I dumped the original bios 2 times as I usually do and when I write it back now the unit only draws 120ma. I also noticed that l4901...

U4900 /fl4900 Im not getting any 16v out here is this only in certain conditions?

Any ideas where to go from here?

Should I be getting voltage on L7410/7420/7430 ?. I have tried a couple of different efi files but still same.

Changes in what way? also do you have a link to known good bios?

Not that I can see. I had it on the oscope for a bit.

Just spillage around U3200. L7210/L7220 has 1.08v PPVCC_S0_CPU has 1.08v

I replaced the cd32 and now get 20.5v 620ma no display or usb activity then it drops to 540ma. Cpu gets warm. Im not familiar with these boards . Where to start?

Which Ic do you suspect u8600 ?

Any ideas ?