In this episode Shahriar goes through the teardown and repair process of a Fluke 196B Handheld ScopeMeter. This unit, which has been purchased as a “dead” unit from eBay, is examined for faults. During the teardown, various PCB components, architecture and design is presented. The performance and functionality of the unit is verified with a few brief experiments. Finally, the schematic and block diagram of the Fluke 196B is explored for the finer details of its design and operation.
Most important thing to be kept in mind when working with soldering iron is not to touch the tip of the iron as it is extremely hot. Soldering material used for the purpose is an alloy of tin and lead and is called flux. Before you put solder over the required area, heat up the surface to be soldered by touching the tip of the hot iron. Application of the solder is called “tinning”since percentage of tin is more in the flux. However, flux can be of various types depending upon the things to be soldered. ^
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Hi Shariar,
First of all I’d like to say that I really like your video’s!
I just wanted to share a little trick with you.
. I’ve removed quite some smd components from some tight places this way.
In the repair you cut away the diode. What I usually do is use a standard soldering iron and use a large drop of soldering tin on the tip.
and use the blob of solder to heat up all the pins of the small package. and when desoldered it usually holds in the tin on the tip of the soldering iron. It mostly works just fine
Shahriar,
As it happens I have a Fluke 199B Scopemeter on loan (see http://sigrok.org/wiki/Fluke_ScopeMeter_199B). I’m noticing the same display flickering as you saw, so I guess that’s normal.
Great, thanks for letting me know. I am getting used to it. I do wish it has an LED back-light.