Good morning, I would like to know if it is possible to program the arduino uno using the nano because the ftdi do uno burned.
Thanks
Yes, you could use your nano as ISP programmer and connect it to the 6 pin ICSP header on the uno.
Here you see it done the other way around, but either UNO or NANO could be master or slave,
if the FTDI chip is so burned, that it causes all sorts of shorts, you may need to remove that burned chip.
An Uno does not have an FTDI chip (though the Uno's predecessors did). It uses an ATmega16u2 for the serial connection (and, indeed, the 16u2 is extremely vulnerable to electrical abuse.
Either way, the damaged chip likely needs to be removed otherwise it will interfere with functionality.
The same sort of events that blow the 16i2 often blow the opamp used to as a buffer for the L (pin 13) LED, if that's "stuck on" the opamp has to go too (and the power source switching is blown too).
Well, the fake UNO's from Ebay/Ali have all sorts of downgraded components. I have one that has not even a SPDIP Atmega but a TQFP and a CH340G that is five cents cheaper than the (usually fake) FTDI chip, which is cheaper than the original 16u2.
The thing that's rather frustrating and ironic is that the official boards with the 16u2 are considerably easier to damage than the knockoffs with the CH340G!