0
\$\begingroup\$

Powered a 5V WS2811 LED strip with 12V by accident. It turned on for a split second, it fried a microcontroller, I noticed the smell and turned everything off as fast as I could.

When i tried powering the LED strip again with 5V (also exchanging for a new microcontroller of course) only the 2nd LED in row turned on. I cut off the first 3 LEDs and soldered the wires on again, but now nothing turns on.

Does that mean the whole 5m LED strip is busted or is it possible some LED+ics further down the line could be salvaged?

\$\endgroup\$
  • \$\begingroup\$ Yes, it is possible. \$\endgroup\$ – Eugene Sh. Jun 21 '17 at 15:18
  • 2
    \$\begingroup\$ Even if some are working, nothing guarantees that they aren't damaged inside with severely limited lifetime. Since they are cheap, just replace them. \$\endgroup\$ – Wesley Lee Jun 21 '17 at 15:52
5
\$\begingroup\$

All the ICs in the strip are powered in parallel. It is entirely possible that every chip in the strip is now broken.

\$\endgroup\$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

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