I bought a couple of these logic probes off eBay recently and they arrived today. What total pieces of crap!

They claim (in the eBay ad and on the packet) that it works on a supply of up to 18V, so I tried it with 17V to be safe. Result? Toasted! Opening it up reveals a crap design.
So, I test the other one on 5V. It sort of works in TTL mode, but in CMOS mode the HI LED is on with a floating input. WTF???
With a 12V supply the LEDs go so bright they look like they'll jump right out at me. Arghh....
To be honest, I didn't expect these probes to be super duper, but thought they'd at least work correctly and survive the stated power voltage.
