Im going back into material handling equipment, but Im coming at the diagnostics from a different angle. We've always relied on a manual with voltage and resistance specs and diagnostic trees. At best, the way the factory has us diagnose things is a compromise. The line of thinking has been try this, this, and this. If its not that, then replace this expensive component as a test and try again. Why do it that way ? Because every technician has a multimeter. Its time to start taking scope pattern checks right at the modules/computers and making a log of them (printed screen shots) on the common units. That way, when errors occur, you have a specific place to go, the proper tool to check the circuit with, and a real world reference as to what you should be seeing. Ive got an old Toughbook downstairs that has a USB port on it, and enough memorey that it can save and show pictures. Thats all I really need. My scope saves screen shots to a USB thumb drive. Take a sample of say the crank sensor on a properly running truck. Stick it on the Toughbook with a quick description. If left alone, I could catalog every input and output on a unit's cpu in an hour or two. Many models share the same engines, transmissions, computer components, so it really wouldnt take that long to log most of a manufacturers current product offerings. I want to eliminate that 'replace with known good component and try again' way we've been forced to use since the beginning of black boxes.
Once thats done, anybody (who knows what theyre doing) could walk up to a unit with a pin probe and definitively diagnose it. The manufacturees have done their best to keep things secretive for decades. Understandably so....they dont want people monkeying around with their technical stuff. Im planning on going after their systems at a lower base level. They cant hide the signals in the wires. Its all just electricity.
Diagnosing heat related problems is always a pain. I bought a vortex tube so I can continuoisly spot cool (or heat) circuit cards during live testing. I design and manufacture my own probes because the affordable stuff thats on the market right now is too generic, and pretty much junk. Specialized stuff is expensive and often just not available. Ive done the job.. I know what would work better. Lets build it.
Yes, Ill have a lot of my own time invested in it before Im done. Oh well. One of the reasons Im doing this is because its long overdue, and because I can.
Speaking of inflation....I just got back from the mall. Fabricland in Londonderry Mall in Edmonton has sewing needles.....or as I like to call them, replaceable, customizable probe needles....on sale for 50% off. I bought enough that I can make as many probe styles as I want. Guess where theyre all made....yep...China. i suspect that they'll be a lot more in 6 months.