Repair Resources and Learning

Hi Guys,

If you know a good tutorial or youtube video related to repairing electronics then please post it here.

Testing A Transistor:
https://www.youtube.com/watch?v=YsJXFLnA62s

Identifying Base, Emitter, Collector, and Type for a Bipolar Junction Transistor
https://www.youtube.com/watch?v=Sgm_ru7aF8w

Capacitor Replacement Tutorial:
https://www.youtube.com/watch?v=YCSNWi3UHf4

The biggest mistake in the video is this:
He knew it was a PNP transistor.
In most cases you do not know if the transitor is PNP or NPN and this video is worthless.
<snip: spam>

I just added another video for figuring out if it's a PNP or NPN.

Identifying Base, Emitter, Collector, and Type for a Bipolar Junction Transistor
https://www.youtube.com/watch?v=Sgm_ru7aF8w

Identifying Base, Emitter, Collector, and Type for a Bipolar Junction Transistor
https://www.youtube.com/watch?v=Sgm_ru7aF8w

This is very bad video because it does not tell the viewer that the multimeter needs to have a 9v battery inside the meter to provide a "break-down" voltage for the transistor to break-down when reading the collector-emitter / emitter-collector leads.
Any multimeter with a 1.5v or 3v battery will not work.
To get a cheap multimeter to work, you need to add a 9v battery to one of the leads and try the transistor. If you don't get a reading, reverse the battery.

And, surprise, surprise, he does not allow comments on his video.

colin55 said:

The biggest mistake in the video is this:
He knew it was a PNP transistor.
In most cases you do not know if the transitor is PNP or NPN and this video is worthless.
See TalkingElectronics.com site for a video that does not assume PNP or NPN and you work out the type of transistor via a few simple steps and stages.

Click to expand...

Colin i looked on your web site, where was the video?

Video, transistor

Collin, Collin, Collin ......you should know that any component that starts with a letter A or B is a PNP transistor, as in a 2SA733. If it is a NPN transistor, C or D. For example, it would be a 2SC945. The No. Stamped on the component will start most of the time with a letter. The No. 2 stands for dual junction semiconductor.