In some #controlunit, the crystal oscillator setup can be inside the #microcontroller #MCU🫣!

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Restoring an old electronic device. The belts are still good, everything rotates freely. No mechanical jams here, ready for more tapes!

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#ElectronicsRepair #VintageTech #DIYElectronics #TechRestoration #CassetteDeck #ReelToReel #AudioRepair #RetroTech

In #EEPROM, the 'pombe' ORG (Organization) pin determines if it's about 8bit or 16-bit🫣!
If a #controlunit mCU pings it to pin 5, then it's 8bit🤷‍♂️!
NOT true, but correct, ORG in most setups, usually not done to pin5, so always do 16bit when NOT sure, #HapaUjanjaTu makes your data adaptable, different #ECU's🤷‍♂️!

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These👆 useless files, if U neglect included stupid #5021tips #codingtips #keyprogramming #immooff #lostkeys #benchwork #ecutuning #diy #electronicsrepair #umeme

Unapoelewa kutambua #electroniccomponents katika #controlUnit moja, ndivyo itakavyofanya kazi katika #ecu zingine🤷‍♂️!

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Taking this board apart to see how it works. Connecting to servo motors for head turns and others for reel spools and capstans. Understanding the mechanics behind the auto-reverse.

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Maybe I've already replaced a #RaspberryPi5 CPU before.

But today was the first time I replaced a Secure Boot locked CPU on a Pi 5.

And that's a whole different story - after I replaced a CPU Pi blinked a 1-2 code - "SD card overcurrent detected". Weird.

I tried to restore #EEPROM from a Micro SD - it flashed 3-2 - "SPI EEPROM is write protected".

I soldered another CPU. Same.

I replaced #RP1. Same.

Turns out it was EEPROM.

#electronicsrepair #microsoldering #electronics #raspberrypi

Hi guys.

Have these chips on Orange Pi 5, but can’t find them neither in the schematic (https://drive.google.com/file/d/1Wsp-Q7IyG0Ky_W-z1n5oXcFG4oqIbtOb/view) nor by the chip markings.

Those are tiny bga chips marked as D25DH 6QR73 or D3FEH 68S53.

They are located under the CPU, so must be related.

I also noticed that these same chips on the same model of Orange Pi have different markings but in a similar fashion.

Thanks a lot - as always.

#fedihelp #electronics #electronicsrepair #ifixit #orangepi #sbc #raspberrypi #schematics

Désolé, #HapaUjanjaTu 👀, nous fabriquons nos trucs inutiles pour aider tout le monde, quel que soit son niveau intellectuel🧠!

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Même si vous n'êtes jamais allé à l'école, vous pouvez devenir un #mjanja🧠 en utilisant nos trucs inutiles #5021tips #techtips #teachyourself #electronicsrepair #howitworks #howitsmade #ecu #ecurepair #digitalelectronics #umeme #diy