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May 30th, 2021 23:00
Latt 5490 power button fail
I have a batch of these 5490 laptops from early 2018 that are having problems where it refuses to power up.
Symptoms:
-No activity on power button
-no charger indicator when charger plugged in
-no life when swapping the internal battery
Its becoming a major problem and I have no idea what to do other than call support and have them swap the motherboard. I have a laptop next to me with an already swapped board and the same issues arrise.
HOWEVER, it didn't power up on Friday when I grabbed it off the pile, but did first thing monday!
Nearly impossible to replicate, and inconsistant.
Anyone else with buggy 5490 and power?
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ieee488
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May 31st, 2021 12:00
DC jack?
U2CAMEB4ME
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May 31st, 2021 13:00
Welcome to the Dell Community @WynbergBoysHS
Hold down the "D" key, push the power button, release the power button, wait 2-3 seconds and release the "D" key
The laptop should go through an LCD test of solid White, Red, Green, Blue and Black 2 or 3 times.
After completion it should try to automatically boot 2 or 3 times.
If it does not boot, then the next thing would be to disconnect the BIOS/CMOS battery.
https://www.dell.com/support/manuals/en-us/latitude-14-5490-laptop%20/lat_5490_om/removing-the-coin-cell-battery?guid=guid-61ba6717-fc02-4136-bb4c-80cbb848e677&lang=en-us
Disconnect the AC adapter and remove/disconnect the “Main” battery.
Disconnect the “Coin-Cell” battery.
Connect ONLY the AC adapter for 3-5 seconds.
Then disconnect the AC adapter.
Connect the “Coin-Cell and Main” batteries ONLY.
Turn the laptop over and open the lid.
NOW connect the AC adapter.
It should try to automatically boot 2-3 times.
Post your results.
Best regards,
U2