Hardware [Question] Stuck Switch Logo evolve to no backlight, no image

[ewabc886]

I'm not the original owner of the Switch, but from what I can tell, it should have no water damage.
When I first turned on the device, it boots and stuck at the Switch logo, can only pass the Nintendo logo.
Got RCM mode working. Injection of Lockpick, hekate, atmosphere all ok, just can't pass the logo if I try to boot into CFW.

I tried to see if it's the wifi chip's problem, but it seems that the capacitors around it are all normal.

I haven't got heat gun in hand at the moment, so I tried to see if it's software problem first.
Tried to rebuild a NAND for the Switch. No luck. Still stuck at the logo.

Then I wanted to start the Switch in linux to see if there is any clue about hardware failure.
Maybe I forgotten to turn off the Switch before messing up with the components or for whatever reasons, the Switch suddenly doesn't show anything on the screen, and not even giving backlight at all.
I can still detect the RCM mode and seems successfully injected payload.

I'm sure that the battery, display and backlight are all good, as I have multiple boards and displays to test for.
I have also learnt some from the Tronicsfix channel on Youtube, and i saw him just gave up on the Switches with normal capacitors reading but no display and backlight.
So before I get my hands on heat gun to play with the chips, I would like to see if anyone can give advices where to look for the problem(s), and any tests could be done, or maybe tell me that I have just burnt the APU lol.

 

[jkyoho]

Did you check the LCD FPC CONNECTOR pins? I had one time prior tech from nowhere bent the pins inside LCD connector and device not turned on at all

 

[ewabc886]

Did you check the LCD FPC CONNECTOR pins? I had one time prior tech from nowhere bent the pins inside LCD connector and device not turned on at all

Thanks for the reply.
I have both backlight and LCD off all the time.
It seems that there's no power at all

 

[The Real Jdbye]

I'm not the original owner of the Switch, but from what I can tell, it should have no water damage.
When I first turned on the device, it boots and stuck at the Switch logo, can only pass the Nintendo logo.
Got RCM mode working. Injection of Lockpick, hekate, atmosphere all ok, just can't pass the logo if I try to boot into CFW.

I tried to see if it's the wifi chip's problem, but it seems that the capacitors around it are all normal.

I haven't got heat gun in hand at the moment, so I tried to see if it's software problem first.
Tried to rebuild a NAND for the Switch. No luck. Still stuck at the logo.

Then I wanted to start the Switch in linux to see if there is any clue about hardware failure.
Maybe I forgotten to turn off the Switch before messing up with the components or for whatever reasons, the Switch suddenly doesn't show anything on the screen, and not even giving backlight at all.
I can still detect the RCM mode and seems successfully injected payload.

I'm sure that the battery, display and backlight are all good, as I have multiple boards and displays to test for.
I have also learnt some from the Tronicsfix channel on Youtube, and i saw him just gave up on the Switches with normal capacitors reading but no display and backlight.
So before I get my hands on heat gun to play with the chips, I would like to see if anyone can give advices where to look for the problem(s), and any tests could be done, or maybe tell me that I have just burnt the APU lol.

Sounds like you may have damaged the LCD/backlight connectors (they are extremely fragile) but try to boot it into RCM mode and plug it into a PC and see if it shows up as a device as that will give you an indication of whether it's even powering on at all.

 

[ewabc886]

Sounds like you may have damaged the LCD/backlight connectors (they are extremely fragile) but try to boot it into RCM mode and plug it into a PC and see if it shows up as a device as that will give you an indication of whether it's even powering on at all.

Yes I tried
I can still detect the RCM mode and seems successfully injected payload.
But no clue on why isn't there image and backlight at all
Recently cant's get more test.M
Maybe need to come back to it after a month or so.

 

[The Real Jdbye]

Yes I tried
I can still detect the RCM mode and seems successfully injected payload.
But no clue on why isn't there image and backlight at all
Recently cant's get more test.M
Maybe need to come back to it after a month or so.

Probably damaged ribbon connectors then, like I said.

 

[ewabc886]

Probably damaged ribbon connectors then, like I said.

But both backlight and LCD are off all the time, so not very possible.

 

[The Real Jdbye]

But both backlight and LCD are off all the time, so not very possible.

Are you sure the LCD is off? If the backlight is not working, it's impossible to see the screen without shining a flashlight in the right way.
It's unlikely you damaged both ribbon connectors, but possible.

 

[ewabc886]

Are you sure the LCD is off? If the backlight is not working, it's impossible to see the screen without shining a flashlight in the right way.
It's unlikely you damaged both ribbon connectors, but possible.

I'm sure, all checked, and with flashlight

 

[HollowGrams]

I'm not the original owner of the Switch, but from what I can tell, it should have no water damage.
When I first turned on the device, it boots and stuck at the Switch logo, can only pass the Nintendo logo.
Got RCM mode working. Injection of Lockpick, hekate, atmosphere all ok, just can't pass the logo if I try to boot into CFW.

I tried to see if it's the wifi chip's problem, but it seems that the capacitors around it are all normal.

I haven't got heat gun in hand at the moment, so I tried to see if it's software problem first.
Tried to rebuild a NAND for the Switch. No luck. Still stuck at the logo.

Then I wanted to start the Switch in linux to see if there is any clue about hardware failure.
Maybe I forgotten to turn off the Switch before messing up with the components or for whatever reasons, the Switch suddenly doesn't show anything on the screen, and not even giving backlight at all.
I can still detect the RCM mode and seems successfully injected payload.

I'm sure that the battery, display and backlight are all good, as I have multiple boards and displays to test for.
I have also learnt some from the Tronicsfix channel on Youtube, and i saw him just gave up on the Switches with normal capacitors reading but no display and backlight.
So before I get my hands on heat gun to play with the chips, I would like to see if anyone can give advices where to look for the problem(s), and any tests could be done, or maybe tell me that I have just burnt the APU lol.

Gonna be either USBC port, M9 ic, or p13ic most likely. I would start with replacong m9ic if usbc port physically looks good.

 

[ewabc886]

Gonna be either USBC port, M9 ic, or p13ic most likely. I would start with replacong m9ic if usbc port physically looks good.

I don't know if i'm getting your idea correctly.
Does it mean that it's possible to have a faulty USBC port causing a boot problem, which can't even bright up the LCD and backlight?
If it can be, it's quite dangerous for the port.

Like the test for capacitors, we can look for a grounded side and the other not grounded for a cap.
Is there any reference points that I can test for the USBC port like this?

Thanks again for the advice

 

[HollowGrams]

I don't know if i'm getting your idea correctly.
Does it mean that it's possible to have a faulty USBC port causing a boot problem, which can't even bright up the LCD and backlight?
If it can be, it's quite dangerous for the port.

Like the test for capacitors, we can look for a grounded side and the other not grounded for a cap.
Is there any reference points that I can test for the USBC port like this?

Thanks again for the advice

You said logos were booting so LCD is all good. Start with m9 if usb c is good. If cant take it in to a pro.

 

[Nightywolf]

Near of the lcd conection test those components big one is a filter resistor should look like be shorted because give small resistance read its if opens then need to change test the cap beside also the small diode because i fix a switch that dint give image just a logo of nintendo blurry then got black screen when i change that components then worked again.