OctoBrite DEFILIPPI Product Recall

It was recently brought to our attention that the current production batch of OctoBrite DEFILIPPI was manufactured with a faulty component. The 78L05 "regulator" (circled below) is NOT behaving like a regulator and will in fact allow overvoltage into the TLC5947 chip, causing failure. We had not received any word of OctoBrite DEFILIPPI failing until now, we think due to the fact that most OctoBrite users have been primarily testing with lower LED voltages. OctoBrites manufactured before June (with regulator oriented the opposite direction) are not affected by this issue.

We are not sure what this part actually is, but we believe it is mismarked or counterfeit. It seems hard to believe that someone would counterfeit such a cheap part, but there's no other explanation that makes sense; our assembler arrived at the same conclusion.

If you currently own one of these devices, please stop using the device if it hasn't been damaged yet. The regulator must be replaced with a working 78L05 SOT-223 regulator immediately. There are three options:

  1. Ship the OctoBrite back to macetech for repair. We can easily replace the regulator and ship it back; you should experience no more than 2-3 days in addition to shipping time round trip. It's still a relatively slow solution, especially for international customers, but the most reliable. If your OctoBrite TLC5947 chip has already been damaged, we recommend this option. Please contact us before shipping any devices.
  2. Replace the 78L05 device yourself. We regret having to suggest this to customers, but if you have the tools and ability, replacing this device is quite easy and probably the fastest way to bring your OctoBrite back to the correct specifications. Replacing the TLC5947 chip is not as easy, and we recommend sending the device back to us if that chip has already been damaged.
  3. Find someone locally who can replace the chip. Correct tools include a hot air rework tool, tweezers, no-clean flux, and possibly lead free solder. For our international customers, this is probably the fastest and most economical solution. If you have a local hackerspace, someone will likely have the tools and skills to easily replace the 78L05 chip.

Again, we apologize for this inconvenience and any problems or lost time it may have caused. We will perform more comprehensive product testing in the future. Thank you for your understanding as we attempt to resolve this matter with all OctoBrite DEFILIPPI customers.

Submitted by Garrett on Mon, 11/08/2010 - 23:18.

Good production testing and

Good production testing and burnin of the recalled part.