Hello guys, the card does not have Vcore, Vmem, Pcivdd and enable in up9509, looking for something wrong I saw that 1.8v is not coming on pin 1 and 8 of the bios, it is generated by the component in the photo below, replaced component, but same behavior without 1.8 v on bios, resistance on pin 1 and 15k on pin 8 of 1.5k, could someone instruct me what to look for now? continuity of the voltage regulator to pin 8 of the bios.

Can you remove 1.8V regulator and provide 1.8V/0.2A from laboratory power supply in to 4-8pin SPI flash(without any other supplies)? What a current consumption will be?

hi,sorry for the delay, is that i can only work on cards 22:00 ~ 01: 00am brasilia time, i removed the regulator and injected 1.8v the consumption current was 0.500mA on pin 8, is this normal?

If 0.5mA(NOT "0.5A", like a 500mA) - normal. But why your linear regulator U504 doesn't give 1.8V(maybe it broken)? "Z08N" - that marking chip was on board from manufacture? Can't find information for that chip.

I have another identical pcb, and the chip has another nomeclature, (image), I have already inverted them and continued the same thing, I am suspicious of a broken track, if I only heard 1.8v on the regulator output I would try a jumper, but only I have 0.4mV.

Possible you doesn't have enable voltage on it LDO. Can you look and write pinout/voltages for this IC?

p.s. board on photos have a lot of places with serious corrosion defects - maybe some traces/components is damaged?

follows the tensions found the black ones are the ones in the regulator, the yellow ones are the ones that should be (compared to another similar board)

Friend, this IC is not 1.8V creator. Look and measure other voltages from selected ICs (on attached images).

you are right, I calmly analyzed the pcb and saw that there was no enable on the uP1727, so it replaces the resistor marked red because when I obese on the other board and then comes the enable for the Regulated, and then the enable and all the other board voltages went up, but it didn’t show video, I believe there is a defect in the memories or the gpu.

is it possible to use mats on vgas that do not output video?

Firstly look on VGA bios for compatible with your board. Mats easy can use as second vga on MB.