Hi all,
I have one of these Chinese LCR T7 testers (the one with build in LiIon battery and ability to test Zener diodes up to 30V), but suddenly it will no longer switch on.
Thinking of a bad contact, I opened it up, but it all seems in order, except....
There is a 6-pin SMD component next to the small, yellow transformer that is very hot when I try to switch it on.
I suppose this is the Step-Up thingy for the High(er) Voltage Zener test?
As far as I can see it is marked as U5, being an AL718, but I cannot find any data on this thing?
Question: Is there a schema / diagram available for this type of tester showing what type of chip this is?
Thanks for any response,
Un saludo,
Leo