You were right about the missing 0 ohm and the pads measure short across.

I am no longer getting fan spin or lights when I hit the power button and +B is 1.6V now (instead of 13.5). If the CPU was damaged and dying I could see trying to repeatably restart the computer finally cause it to kick the bucket. Not sure where to go from here....

Went back and traced through some of the charger circuit. Saw 19V on DC_IN but not on SDC_IN or DC_IN_SS. Could be reading this schematic wrong, but doesn't it seem like I am missing this 0ohm resistor to PQ205 gate that pulls down the PQ200 gate and turns S1 on?...

Hello,

My Dell Precision 5530 turned off suddenly when I was running Matlab and wouldn't turn on, show any lights, fans, and/or any signs of activity at all. I opened the case, removed the battery and looked at the board with a thermal camera while the AC adapter was connected. I saw that PU1252 was >120C so figured the chip had died on me Got the part number off the attached schematic (see Mouser link below) and replaced the chip. After replacing the chip the board (connected to AC adapter) was able to briefly power on, spin the fans a little bit, and turn on the front led lights....

Hello all,

My dads TV recently broke and he asked me to look at it and see if I could fix it. The power light comes up but the screen remains dark. I tried the flashlight test to see if the backlight was bad and couldn't see anything.

I found the circuit diagrams for the PSU and mainboard online and started testing the voltages. At the connector between the PSU and the mainboard I get 5.2V readings on the 5V pins and ~18.5 V on the 12_16V pins ([url]https://sli.mg/ID6bsF[/url]). If I disconnect the ribbon between the mainboard and the PSU then I get 15.8 V on the...

Re: New Members - please post your introductions here

Hello all