1
\$\begingroup\$

enter image description here

From a preliminary look around the internet, I think there's an axial lead capacitor, a couple of ceramic capacitors, and a couple of electrolytic capacitors.

I'm also thinking that that's a resistor down the bottom there.

enter image description here

In this second one, I recon I'm looking at a bunch of IC's and transistors, but, beyond knowing the two basic transistor types (PNP and NPN), I don't really know how further to identify them.

Any confirmation or correction on anyone's part would be great!

\$\endgroup\$
6
  • \$\begingroup\$ Resources for teardowns of chargers - Ken Shirriff's blog and Big Clive on YouTube \$\endgroup\$
    – Martin
    Aug 30, 2017 at 11:47
  • 1
    \$\begingroup\$ No relevance to the question, but what an interestingly odd inclusion of dimensions on the silkscreen of the lower image (3 places). \$\endgroup\$
    – Tut
    Aug 30, 2017 at 11:52
  • 1
    \$\begingroup\$ Creepage distances, usually on the compliance documentation. \$\endgroup\$
    – AnalogKid
    Aug 30, 2017 at 12:49
  • \$\begingroup\$ @jesser2: Nobody has mentioned yet the carpet! Most of the area you are looking at is carpet. \$\endgroup\$
    – Curd
    Aug 30, 2017 at 13:07
  • \$\begingroup\$ Ugly cheap slave labor manually built board.. How many of their phones blew up again? \$\endgroup\$
    – Trevor_G
    Aug 30, 2017 at 13:39

2 Answers 2

2
\$\begingroup\$

The component with a "F" designator (light green) is a fuse. The "TH" (dark green) is a PTC thermistor. The "L" (vertical black cylinder) is an inductor.

And I think the charger failed because a thermal fuse (connected via the wire over the core) on the transformer blew, so thermal damage (as the half-shattered core and partially-melted cap evidence).

\$\endgroup\$
1
\$\begingroup\$

The two horizontal tubular parts are electrolytic capacitors. The top right black cylindrical part that is standing up also appears to be electrolytic capacitors. The bottom left standing-up part seems to be inductor.

The blue sortof disk at middle right could be a capacitor, but might also be a TVS or varistor.

The green part at lower left could also be various things. The "T" designator hints at a temperature sensor, like a thermistor.

The green part at lower right seems to be a fuse. A resistor would have more obvious markings, and the "F" in the part designator is a clue.

\$\endgroup\$
2
  • 1
    \$\begingroup\$ Middle-right smells like a Y-class cap ("CY"). \$\endgroup\$ Aug 30, 2017 at 11:25
  • \$\begingroup\$ @Ign: That's plausible. \$\endgroup\$ Aug 30, 2017 at 11:37

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct.

Not the answer you're looking for? Browse other questions tagged or ask your own question.