Switch , no battery icon and won't boot past Nintendo logo

Nintendo Questions Nintendo Switch
1

I just got a Switch from fleabay. It accepts a charge at 15v 0.5a from a Nintendo charger. Checking the battery voltage shows it charging.
However, I do not get the battery icon on the screen.
Pressing the power causes the Nintendo logo to display then disappears.
I have not seen this where no battery icon is displayed.

Is this a sign that the Switch is stuck in RCM mode? Or maybe a bad fuel gauge chip, due to the battery icon never appearing.

The regular suspect caps have been checked for shorts and they all look good.

I have no experience with modded switches.

Thanks in advance for any advice.

2

self-explained. You wont see any logo if stuck in RCM mode.

if it’s been modded. More suspicions leads to system files or modchip malfunction.

3

I guess I’m confused by not seeing the battery icon whenever you plug the charger in. Yet it appears to be charging the battery.

4

What model is the switch and what modchip is there?

5

It was the fuel gage chip causing the problem. I found a little corrosion around the balls, reflowed the chip and the battery icon appears and the switch boots fine.

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