Electronic Design Specialists | Maker of the LeakSeeker 89

EDS LeakSeeker 89 UPDATES

Lost your owner's manual? press here.
Tutorial and demonstration videos on YouTube:
While calibrating, LEDs just scroll off without locking:
Can't calibrate on shorts higher than 150 ohms:
Blown by forgetting to power down the unit being tested:

The video is on the LeakSeeker 89 page on the EDS website, but here is the You-Tube direct link.

While calibrating, LEDs just scroll off without locking:
When you turned on your LeakSeeker, you pushed the power/mode switch up too far into the 3-wire test. When using the normal 2-wire method, LeakSeeker can't find the special signal from the third wire. Don't feel bad, I've done this once myself on final QC on a unit and spent wasted time troubleshooting, until I realized what I did!

Can't calibrate on shorts higher than 150 ohms:
The LeakSeeker 89 original circuit from the very first batch in April 2013 used a different code in the mcu that only allowed up to 150 ohm shorts to be found. Units made after that have the updated code that allows the 300 ohm range as advertised. You probably will never need to locate a short that high, but if you do and you were one of the original owners with the first run, we can update the coding on the mcu. Contact us with your invoice showing your purchase before September 2013 and we will reprogram your LeakSeeker at no charge.

Accidentally touching a powered up circuit, causing damage to your Leakseeker:
As you know, the LeakSeeker is designed to provide its own precise voltage and current from the test leads, and the unit under test must be powered down. Some users have been somewhat careless (I know, a customer interrupted your train of thought!) and after probing a powered pcb foil, your unit now beeps in agony all the time and won't reset, or ignores any probing.

What happens is that the power from the unit under test feeds back into the unit's 5.6V Zener protectors (1N4734A) to short any voltage higher than 5.6 volts forced into the test probe or 3-wire port. Also, 0.47 ohm 1/4 watt fireproof (metal oxide) resistors are installed in series with the test probe cable, to act as a fuse.

Open your LeakSeeker and the fusable resistors and zeners are clearly marked, by the test leads. Check and replace if any are defective.


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