✅ Simple but powerful device + the best FNIRSI FNB58 USB tester! The results are impressive! ✅

Hello everyone! Phone charging does not work. How do I find out what the reason is? In the charger itself or maybe in the USB cord? In this video, I'll show you how to figure it out in just one minute! You can do such a check using a multimeter, but it is much more accurate, faster and more informative to use a USB tester! I will use the FNIRSI FNB58 USB tester. By clicking on the link below, you will be able to purchase this latest generation USB tester with many additional useful features.
FNB58：s.click.aliexpress.com/e/_oB7...
I will also assemble one very useful device with which you can fairly accurately assess the condition of the charger and the USB cord. It will work together with a USB tester. I will solder this scheme with the help of volumetric (hinged) mounting. But today I will have a homemade soldering iron - a soldering iron made of a resistor! In one of the previous videos I showed how to make such a soldering iron and what it is capable of. Just below there will be a link to this video and, if desired, you can watch it.
The device that I will solder today is called a resistive load. Just to measure what voltage at the output of the charger is not enough. It is necessary to know what current the charging provides, whether there are any losses in the USB cable, and so on. All these indicators can be found out when using a resistive or test load.
This device will require a minimum of details: 4 LEDs and 8 resistors (4 load and 4 current limiting for the LED), as well as a pair of USB ports. After assembly, the resistive load does not need to be adjusted and it can be used immediately in work. The maximum indicators provided by the resistive load are: current consumption - 1.5 amperes and power - 8 watts. You can see all the details on the assembly and testing of this device in this video.
You can download the schematic diagram, ask a question, suggest an idea for a video or solve other important issues in the Invexlab chat:
t.me/invexlab_chat
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#usb_tester #FNIRSI_FNB58 #FNIRSI_tester #how_to_check_the_usb_cord #resistive_load #test_load #charging_does_not_work #why_the_smartphone_does_not_charge #the_phone_stopped_charging #how_to_solder #beautiful_soldering #radio_electronics

[@invexlab_world]

You can download the schematic diagram, ask a question, suggest an idea for a video or solve other important issues in the Invexlab chat:
t.me/invexlab_chat

[@tommyle628]

A Russian guy who reviews and uses Chinese electronic device on an American media platform. Don't get me wrong, it shows how beautiful our world can be against all of the current crazy tech sanctions. Thanks for your great work and wish you all the best :)

[@czarnakropla3314]

You're very good at soldering, which is rare on TH-cam

[@MrArcheopteryx]

Superb work! You show skills and intelligence in design and applications. Thank you so much.

[@alexkay1874]

Your load tested is simple and useful

[@S.A.V.A.G.E._L.I.F.E.]

I like this

[@Spider-ut4we]

Thanks for the great Video.
At the end of the video with the faulty usb cable, would you also see that the cable is faulty when you check the resistance of the cable with the FNB58 that it is maybe to high or low to the other usb cable which was ok? Or can you only find out that the cable is faulty with the usb load?

[@hardusvd]

Mine show error code 02 when power up with power bank. Is there a way to fix it?

[@koksing1]

Did the usb test device have electronics loading?

[@andrikurniawan531]

what is the different beetween this and fn48p?

[@si12volt1]

Did you notice if the temperature can be set to Fahrenheit?

[@keeganharmon8595]

Yes you can set the temp units for fahrenheit

[@JoeAnshien]

How can you test a wall charger with a USB-C connection to see its capabilities as it seems to work only over the USB-A connection? I tried a few USB-A to C cables and it would not even power up. Thanks

[@mattjoy]

There is a C input & output, is that what you are looking for?

[@thedryparn1279]

The unit should be powered through the "PC" port when measuring.

[@thedryparn1279]

I think you should read the manual before making a video about it. You are doing the cable check wrong. Use the cable check function. Also the unit should be powered through the port marked "PC" when making measurements.

[@eugene270953]

There is one big drawback in this "superb" USB Tester. Unlike most testers, it does not measure the resistance of the connected load directly. In the latest firmware by Fnirsi V.068 there is no such indication.

[@rouuuk]

it does measure the resistance of the cable tho, but you have to have a constant load connected to it

[@thedryparn1279]

@@rouuuk Yep, reading the manual is helpful.