Yo all, it is Friday now where I am, so might as well get the #nakeddiefriday thing going.

Today's guest is the famous NES PPU chip, RP2C07A by Ricoh. What's interesting about this particular sample is that it's very very dead. Many thanks to @root42 for supplying it!

As always, a short thread follows. Why not give this one a boost while you're here? :D

SiPron page for those hi-res maps we all love: https://siliconpr0n.org/archive/doku.php?id=infosecdj:ricoh:rp2c07a

Note the die is oriented the same way Visual 2C02 has it: https://www.nesdev.org/wiki/Visual_2C02

#electronics #reverseengineering #icre #failureanalysis

What happens when a bank's critical IT upgrade checks all the boxes for disaster?

Article dissects their calamitous "Big Bang" update – from communication breakdowns to security nightmares. Read why this serves as a prime example of what not to do: https://www.alanbonnici.com/2025/05/bnf-banks-gone-wrong-system-update_0175945782.html
#BNF #BNFBankMalta #ITProjectManagement #FailureAnalysis #BankingInnovation #MaltaNews #TechFails #RiskManagement #MFSA #TTMO

🔍 What is Forensic Engineering?
Uncover how engineers solve mysteries behind structural failures, accidents, and disasters by applying science to law.
👉 Click here: https://www.engineersheaven.org/forum/topic/36
to visit our website and read the full article.

#ForensicEngineering #EngineeringInvestigations #FailureAnalysis #AccidentReconstruction #LegalEngineering #EngineeringForLaw #EngineersHeaven #StructuralFailures #EngineeringEthics #TechForJustice

"The best way of outwitting the many dangers, the experts agreed, would have been to subject Titan to rigorous testing under the anticipated conditions and stresses."

I think you could substitute any product name for "Titan" in the above sentence and it would be true, but then I work in Test & Measurement.

#Titan #FailureAnalysis

From: https://www.nytimes.com/interactive/2023/07/14/us/titan-submersible-implode-design.html?unlocked_article_code=SZ-Pv4FeB93pAf70atyRlXQ085bHZDTh4veNFsJLXlFCpnt-WlNdzqfHVHjWpo5FJ7ZavqspIwzNls7mB9JCAYt0F57SpDxucRnIL4mYXhwM-9WDPvO4G4txf3D7AIYksPPVgl2kl3J3teIrK6Wvno3aUxlfMizKcONO-j5an0lZ65fX6KlSaH1KyvrVBWiHjTFX-bLQpRgAmo1FvXjmkvcjnwzOu1oXpp97h86g4qXOMFOhWDMNoe-OJaKfhnXxkeqBhMlbxHZjO5169EWPtBs9166203Gkp9F-1C7I3AFbbejAne-zU0Ox7GjPPG5ss6A9i_nGG8JIS5JgYjmaZDdqsTc3E2gE74QiAKiVGE2Mj9nOKA&smid=url-share

Quite possibly one of the most impressive videos for a long time.

https://www.youtube.com/watch?v=fFNi3YNJXbY

#GamersNexus
#FailureAnalysis
#AMD

`Introduction to the Cox model`

https://www.youtube.com/watch?v=CzHt22YL_-w

#coxModel #proportionalHazardModel #davidCox #sirDavidCox #survivalAnalysis #failureAnalysis #failureTimeAnalysis #forceOfMortality #reliabilityEngineering #kaplanMeier #failureDistribution #failureTimeDistribution #failureRate #hazardFunction #hazardRate #failureRate #nonParametric #model #modeling #statistics #stats #mortality #function #mathematics #math #proportionality #regression #regressionModel #leastSquares

There once was a scientist named Max
Who studied EBIRCH with his team of cracks
They found that a beam
Would make metal gleam
And its resistance would quickly relax

#failureanalysis #chatgpt

The Little Replacement PSU That Could: Kill A Microsoft Surface And Monitor

Recently [Big Clive], everyone's favorite purveyor of anything electronic that's dodgy, cheap, cheerful, decidedly crispy or any combination thereof, got sent a very dead external power supply unit. Being clearly a third-party PSU with Engrish and many (likely not truthful) safety approval markings on its label, this PSU had the dubious honor of having destroyed a Microsoft Surface computer as well as the monitor that was connected at the time.

In [Clive]'s video (also embedded after the break) the black and very crispy board is examined, showing a wealth of vaporized traces and plenty of soot. What's however most fascinating is the failure mode: instead of something obvious like e.g. the main transformer between the primary and secondary side failing, here it would seem that an inductor (see heading image) on the secondary side had its insulation rubbed off and shorted on a nearby heatsink. A heatsink that just happened to be also electrically connected on the primary (mains-level) side.

Judging by the former owner's report and aftermath, this led to a very sudden and violent demise of the PSU, with mains power very likely making its way into the unsuspecting Surface system and connected monitor. The number of 'very nope' design decisions made in this PSU are astounding, and a lesson for both aspiring EEs and anyone considering getting a 'cheap' third-party replacement PSU.

(Thanks to [Helge] for the tip)

#hardware #teardown #failureanalysis #hardwarefailure #laptopnotebook #psu #surface