Nintendo Switch No Signal

[xdnl]

I have a console on the bench with no sign of life, taking the measurements the voltages of 4.2v on the battery connector are present, 3.3v on pins 5 and 6 of the m92 too, I didn’t find any shorts, the console doesn’t even give a signal in the rcm

[Severence]

Heya man,

Can you just follow along with the following topic and provide your resistance measurments to ground at the following locations surrounding the main PMIC

Switch: 0.05 A current draw, won’t charge or power on

Yeah it’s too low, so next port of call is finding out if you have a short to ground on any of your other primary rails and if so which one represents to the lowest resistance measurment, we’re doing this to narrow down the potential culprit. Here’s the points I was reffering to earlier, you put your black probe on ground and your red probe at one of the highlighted coloured points, each of these points represents a different rail. [Primary rails] If your meter displays a value which is the…

I guess your not getting RCM with even the EMMC module removed also?

Which usually points to a [boot] CPU related issue, the measurments above will hopefully let us know, and just to say this may be an internal SoC failure but let’s hope for the best

[xdnl]

I will follow this topic, thank you sir

[xdnl]

Diode, voltage and resistance values

Something wrong?

Obs: The values ​​in red are my measurements

[Severence]

Unfortunately you have a dead short on your boot CPU power rail (0.5 ohm)

Typically this would be internal SoC damage

You can try removing the two inductors (highlighted the first one in yellow) and see whch side of the pads remains short to ground in case it’s the PMIC at fault.

You could also remove the SoC shields and inspect the area in the unlikely event there is liquid/corrosion under the SoC, though I don’t think that’s going to be your problem.

[xdnl]

Sorry actually it’s 50Ohms not 0.50omhs

[Severence]

Then there is hope

Whats your resistance to ground on pin 6 of the M92 IC?

Also might be worthwhile taking some resistance readings on the two Max ICs top side on surrounding components, just in case.

failing that, I might be looking at the ram a bit closer. though I seem to recall you’d still get RCM with most ram related issues.

[xdnl]

@Severence

failing that, I might be looking at the ram a bit closer. though I seem to recall you’d still get RCM with most ram related issues.

So I’m not receiving any signal from the RCM

[xdnl]

Pin 6 is having a resistance of 150kohm