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I had very little knowledge of how to diagnose the leds in my tv prior to purchasing this tester. After a few minutes of using the tester, I was able to determine which LED strip had a defect and proceeded to remove the defective LED. No new strips were available for this tv, so I removed the defective one and soldered across where it had been. This enabled all the other LEDs to work properly and I reassembled the tv. It looks as good as it ever did, with no evidence of the missing LED.
Verified purchase: Yes | Condition: Pre-owned
This is a brilliant device, and essential if you are doing any sort of led repair work. It is good for testing a single led or or 300 leds. This unit is the most useful tool in my tool box now and has saved me hours when looking for a faulty led. If you repair tv's, this unit is a must have.
Verified purchase: Yes | Condition: Pre-owned
As described, useful, cost effective, would recommend. Note: Unlike a meter this item will shock the hell out of you if you touch both ends of the probe forgetting that is attached to a power source, not the tester's fault.
Verified purchase: Yes | Condition: Pre-owned
This tester is amazing because it lights the led at low voltage then gradually increases voltage to the maximum that it can take so this tester is as I call it intelligent (the smart led tester).
Verified purchase: Yes | Condition: New
Verified purchase: Yes | Condition: New