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Soldered SPI Serial Flash EEPROM, Removal and Refitting
Removing and refitting a soldered SPI Serial flash eeprom on a lenovo 3000 N200 Laptop Mainboard. using a hot air station
Video Rating: 5 / 5
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can I add a socket on it?
It will be easier to change it
1 second ago @Computerprohelper The chip is only placed on the footprint with a little bit of electronic flux on the pins and pads.
The flux stops the solder oxidising, which in turn helps the solder to flow. The chip is not stuck in position until the soldered joints melt and flow.
Heat gravity and capillary action do the rest
@Zeanon1 u know what that makes sense
i am going to try that
thank you very much
but what is the material you used in order to get the chip to stick,
stick while staying in contact with a conductive material
@Computerprohelper No solder was used except existing solder on footprint pads and the chip feet.
Sounds like you need to get the ambient temperature up and maybe use a desk lamp to prewarm the board
how did u keep the solder wire melted for so long
mine just cools right away
350-420 degrees C, The higher the Ambient temperature the better.
Times vary depends on chip size
temperatures?
times?
Hot air – Definitaly the way forward…
….BUT… What is the music track in this vid?!?
Absolutely silicon has high rework Temperatures for short periods of time, and are often baked before use.
Non pb solder flow temperatures are higher than pb solder. It wouldnt be uncommon to use a temperature of over 400 degrees for short periods.
The ambient temperature in workplace is vital. Work in too low a temperature and you will struggle to remove the smallest of devices, makes for a much easier life
Thanks. Watch the vid carefully towards the end. You can see the chip being flipped into alignment by capillary action when the solder melts
and the heat is absolutely ok for the chip?
nice bit of h.a.s