Re: ASUS X54C-RB01 issues: power cycles during cold boot or reset/exiting the BIOS

The board is 6 years old and the LCR meter was $25. Some look a little bulky on top.

Re: ASUS X54C-RB01 issues: power cycles during cold boot or reset/exiting the BIOS

Bought an LCR Meter, checked every capacitor, and about 6 capacitors are bad and the others are reading higher levels.

Capacitors:
1x 2D3 220uF 6.3V SMD (bad) --> 25uF (might be wrong readings)
6x 68 EFK. C42 25V SMD (over) --> increments between 525uF-526uF (might be wrong readings)
5x E246 560 2.5V SMD (bad) --> increments between 114uF-300uF (might be wrong readings)

I cannot seem to find the 560uF 2.5V SMD capacitors anywhere and cannot get...

Re: ASUS X54C-RB01 issues: power cycles during cold boot or reset/exiting the BIOS

Tested with one stick, did the same thing. I cleaned the CPU and heatsink with new thermal paste, sprayed DeoxIt onto the CPU socket and RAM socket. The laptop almost boots up the first time (I hear the optical drive spinning up, which is a sign), but, it's still acting up. Going to purchase a soldering iron that's meant for SMD everything, remove one cap at a time, and test them individually using an LCR multimeter to see what happens.

Re: ASUS X54C-RB01 issues: power cycles during cold boot or reset/exiting the BIOS

The processor I kept as-is, wireless card as-is, and the only things that were upgraded or swapped was the RAM from 2GB to 6GB, heatsink/fan combo back in 2013-2014 since the old one broke, and the HDD to an SSD back in 2016...

Here's the story (should've gone on this forum years ago):

My ASUS X54C-RB01 is having issues with power cycling when turning it on (cold boot), rebooting an OS (Windows or Linux), or saving changes and exiting the BIOS.

The cycle when turning on the laptop is this:

Power light is on steady, as well as the charger light, num lock and HDD lights turn on briefly, and turn off, repeats, and turns on fully (shows the ASUS logo, the boot screen choosing between Windows 10 Pro and Xubuntu 17.10.1 LTS) and works normally.

The cycle when rebooting the...

Re: New Members - please post your introductions here

Hello, ladies and gentlemen. I'm a help desk agent (contractor) and have a big computer collection. I came across this forum while searching for solutions to my ASUS X54C laptop issues: power cycles on, off, on, off, on, off, full on at either cold boot, OS reboot, or after saving changes to the BIOS.