repair

Posts Tagged ‘repair’

Repairing Lights of America 7200LED-BN LED Lights

Lights of America 7200LED-BN package

Lights of America 7200LED-BN package

Let me make it perfectly clear: if you see these sold in Walmart or elsewhere, stay away! This horrible product’s UPC is 755277720037 and the full part number is 7200LEDBN3VP. These are 120V-60Hz 2.5W (35mA) white LED “under cabinet” lights (“luminairs” as the manufacturer calls them) made in China and marketed by Lights of America, Inc. of Walnut, CA.

The manufacturer touts these as saving energy, linkable and longer lasting accent lights. I agree with the first two points but the “longer lasting” is a very relative term here. Let me put it this way: some (not all) did actually last longer than I was unpacking them but none lasted longer than 10 hours. And a couple were simply DOA (dead on arrival). Below is my collection of broken “Lights of America” LED lights. Read the rest of this entry »

Fixing a Scorbot ER4-PC


No electronics lab can go for long without a robot eventually making its way in. Well, in my lab there is approx a dozen. Most are Scorbots by Eshed Robotec (Intelitek, Depco and there may be other names under which they were sold) These robots are usually rather old and by the time you get them they have been through a couple of generations of middle school students. But they were built solid and many survived, even if in need of repair. This is what this post is about Read the rest of this entry »

Tools

Coming soon ...

Recent Comments
  • Ron: One correction. The original 7200-BN bulbs were 2.5 watts. I also have 3 of the vented replacements left for...
  • Ron: I have some of the upgraded 7200LED-BN bulbs that LOA sent me a year or so after I installed 2 4-puck strings in...
  • Chisight: You seem to be trying to implement a constant current supply but the LT1121 doesn’t have a constant...
  • Joshua Donar: Would you happen to know where the driver is for the CT10L drive is? Haven’t been able to locate...
  • Albert: Hello Thank you for sharing Tell me please meaning D4 zener. Meaning the role in this schematic. Looks like...
  • Will: I also aquired a scorbot 3 without a controller and in my spare time I have been developing a simple servo...
  • YamZYang: Hello, I learned alot from here. I have a question about the H-bridge motor driver, are there any special...
  • John: I’m trying to use this code to rotate a 14-pole, 12-slot BLDC motor. However, I’m getting some very...
  • admin: The signal is most definitely a square wave of varying width. Its resulting torque might look like a sine wave...
  • Andrei: Hi there, Great article. Really helps to explain the BLDC control. I was thinking of a way to control a BLDC...
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