Dell Inspiron 15 5570 Plugged in not charging

[dana.repouille]

Re: Dell Inspiron 15 5570 Plugged in not charging

Well now. I was able to remove a PD1 TVS diode from an old 7th gen motherboard, and transplant it to an 8th gen motherboard with a blown diode. That makes me very happy.

Removing these microscopic chips is easy, but soldering them onto a motherboard is extremely difficult for newbs like myself. But it works perfectly, and my test readings show that the transplanted TVS diode is working.

With meter in diode mode, and negative probe on ground, the diode does not conduct. With the positive probe on ground, my meter shows 0.8, which I assume means the diode is conducting. I am not sure what that 0.8 reading means in units of measurement.

I don't mind losing 7th gen motherboards, but I hate to lose a perfectly good 8th gen motherboard. This is the first time I was able to fix the "plugged in not charging" problem on an 8th gen motherboard.

Thanks!

Dana

[dana.repouille]

Re: Dell Inspiron 15 5570 Plugged in not charging

On Stack Exchange, I see this:

A multimeter in diode mode usually displays the voltage drop measured across the diode under test, as a small current is passed through it. A single silicon diode usually has a forward bias voltage drop around 0.7V

[mon2]

Re: Dell Inspiron 15 5570 Plugged in not charging

Correct. Glad to hear the good news.

A diode has a typical forward voltage drop of 0.6 volts unless it is a low voltage drop diode where the device may be around 0.2volts for the same setup. They are called ideal diodes.