Diagnosing a Dead Display in the Ryobi P737D Digital Tire Pump Teardown

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=5ouT5mpgK-o

With the inexplicable fan failure on my last Ryobi air pump I was curious what could've been the problem. And some of the comments on the P737 showed some curiosity regarding what's in the new unity. • Somehow this one actually came out worse fresh out of the box. Although the air pumping is functional the fan started tearing itself apart while it was still open. And the digital pressure gauge was missing solder. • My look inside the previous model and it's repair is here: • Looking inside the Ryobi P737 18v Tir... • and you can get the replacement fan for 3D print here: https://www.thingiverse.com/thing:435... • And now I need to go print another one of those myself. • 02/14/21 Addendum: I didn't explain it in the video but I believe the CAL being displayed on the screen goes back to the solder-free joint on that SMT part. Since the gauge wasn't functional it probably didn't get calibrated at the factory. If I want it to work I'm going to have to fuzz the method for triggering the calibration. • If anyone knows how to do that it'd be appreciated! Otherwise I'll have to rip this gauge off at some point, wire it up, and see if I can poke the test points to see which ones tell the processor that there's a set amount of pressure present on the line. At that point I should be able to dial it in through comparison; assuming that's how it works.

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