How to test a Hot

MKplayer1start

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I have the hot from a K7000 pulled out of circuit and I need to verify the correct way to test it.

from what I searched I think I set my DMM to Diode mode? black lead to middle leg, and red lead to either outer leg. doing this I get a reading of .430

is this a high enough reading to be considered good?

I also have set the DMM to continuity and I get a beep on the 2 outer legs, and no beep with middle leg and either outer leg. My understanding is that this is good.

is this the correct way to test a HOT? I want to confirm so I can rule it out.

I also need to know the correct way to test the Voltage Regulator...
 


The only way that I am aware to test a regulator that I know of is just to measure the output voltage and you should get a reading within what it was designed for - if not, first check the input voltage to makes sure it is higher than the output is suppose to be - if ok chances are the regulator is bad (although there is a chance that something else in the circuit could be loading down the output as well).
 
I could swear I replied to this already.

Anyway, the HOT for a K7000 has low resistance between the outer legs, which is why it shows as a short during testing. This is normal. You should only test the HOT by putting the black lead on the center leg and the red lead on each of the outer legs. a reading between .400 and .700 is good. Anything outside that range (or a short) is bad...
 
thanks for the video link. I've already searched and watched numerous videos, but doesn't help me verify this specific HOT from a K7000. It's a 3 pin transistor which is different from the video

I just want simple verification I'm testing it right.
 
I could swear I replied to this already.

Anyway, the HOT for a K7000 has low resistance between the outer legs, which is why it shows as a short during testing. This is normal. You should only test the HOT by putting the black lead on the center leg and the red lead on each of the outer legs. a reading between .400 and .700 is good. Anything outside that range (or a short) is bad...

Sorry if you already answered me in my other thread I'm not sure. Maybe you did in other words, but what you said here I understand perfectly. thanks

I'm just a normal guy. I don't know much about electronics, and I'm just learning the terminology. It's probably common knowledge for you guys lol but It's over my head sometimes.
 
thanks for the video link. I've already searched and watched numerous videos, but doesn't help me verify this specific HOT from a K7000. It's a 3 pin transistor which is different from the video

I just want simple verification I'm testing it right.

It tests the same - the case of the one in the video is the 3rd leg/pin (just in a different case/package - some transistors can come in both types of packages).

You can't test a regulator like this as it's 'internal' structure is different, there are several transistors and other components inside the package. It either works or doesn't.
 
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