Back in the old days electronics were a lot simpler in some ways, but they sure got more complicated with time. It's always good to remember that Ohm's law, at least, remains constant. Thanks for the video!
Thanks for the Video! Forgive me for the intrusion, I would love your initial thoughts. Have you tried - Tarbbatigan clean errors Tip (Have a quick look on google cant remember the place now)? It is an awesome one of a kind product for discovering how to fix electronic devices without the hard work. Ive heard some incredible things about it and my friend finally got astronomical success with it.
Some transistors also have resistors built in, I think HOTs often did, but other modern power transistors may still do, too. If you aren't aware of that they can appear shorted. Like he says, if in doubt, look up the datasheet.
Because of that (the internal resistor connected between the B-E terminals of the HOT and among many other reasons) one must use a trusty multimeter in order to identify its existence without the need of the data sheet. A trusty, good quality multimeter will give you the exact value of the internal resistor if you use the ohms measurement. This is based on the fact that good quality instruments use small voltage when measuring resistance, which does not bring any interconnected semiconductor diode to conduction. For this example, the measurement will seem to be abnormal only in the diode function, where much higher test voltage is used. But the confusion will be cleared with a second measurement in ohms. There is not even need to remove the transistor from the circuit for these measurements. In circuit - power off measurements will do. Cheap instruments don't offer such conveniences...
No because resistors don't usually short out, and even if there was a short on the other side of the 10 ohm resistor which went to ground, it still would not draw more than 1.2 amps .
Any tips for remembering how p-channel / n-channel midgets work? I try to tell myself "ps" for example p-channel the source needs to be higher than gate for it to conduct
Thank you very much for your videos. I noticed that you recommended a couple of books from Jestine Yong. Do you think it would be a good investment , and would help me , if I would enroll in his electronics course ? I already know quite a bit about electronics and have almost all the test equipments I need to work with electronics. I just think that maybe that would help me get a good grip in electronics repairs. Thanks again for the good videos.
I'm not sure if his book would necessarily be right for you if you already have a good background in electronics, but I learned a few good tips from his books, and so have others I've spoken with. Jestine worked as a repair technician, so he had some practical hands on experience I found helpful. English isn't his first language, so I found a few of his tips were not as clear as they could be, but overall I was glad I purchased a couple of his books. I don't think TV repair is a good business anymore. At least not as a independent like myself.
I'm not sure but ,if anyone else wants to uncover repair a car try Saankramer Electronic Magazine System ( search on google ) ? Ive heard some unbelievable things about it and my brother in law got amazing success with it.
Back in the old days electronics were a lot simpler in some ways, but they sure got more complicated with time. It's always good to remember that Ohm's law, at least, remains constant. Thanks for the video!
Thanks for the Video! Forgive me for the intrusion, I would love your initial thoughts. Have you tried - Tarbbatigan clean errors Tip (Have a quick look on google cant remember the place now)? It is an awesome one of a kind product for discovering how to fix electronic devices without the hard work. Ive heard some incredible things about it and my friend finally got astronomical success with it.
Are the transistors you tested a PNP?
When the arrow points away from the center of the Circle it's an NPN Transistor.
@@GrantsPassTVRepair @6:26 Is this a PNP transistor because the negative probe stayed on the base?
@@jancenj2218 Yes they are PNP transistors I was testing with my meter.
Thanks for reminding me of the common sense strategy in troubleshooting. Thinking! Great short vid. Hope you record more insight for dummies like me.
more people should your videos instead of non-sense video her in RUclips. You always deliver great content
Thanks Gen.
Some transistors also have resistors built in, I think HOTs often did, but other modern power transistors may still do, too.
If you aren't aware of that they can appear shorted.
Like he says, if in doubt, look up the datasheet.
Because of that (the internal resistor connected between the B-E terminals of the HOT and among many other reasons) one must use a trusty multimeter in order to identify its existence without the need of the data sheet. A trusty, good quality multimeter will give you the exact value of the internal resistor if you use the ohms measurement. This is based on the fact that good quality instruments use small voltage when measuring resistance, which does not bring any interconnected semiconductor diode to conduction. For this example, the measurement will seem to be abnormal only in the diode function, where much higher test voltage is used. But the confusion will be cleared with a second measurement in ohms. There is not even need to remove the transistor from the circuit for these measurements. In circuit - power off measurements will do. Cheap instruments don't offer such conveniences...
If the transistors are good, would you suspect the 10-ohm load first then the 24 one?
No because resistors don't usually short out, and even if there was a short on the other side of the 10 ohm resistor which went to ground, it still would not draw more than 1.2 amps .
@@GrantsPassTVRepair Which component from your experience are most likely to short out? Capacitors?
@@jancenj2218 The most likely components to short out are diodes and transistors. Capacitors are more likely to open.
yeah , it becomes better from vid to vid..thanks
Any tips for remembering how p-channel / n-channel midgets work? I try to tell myself "ps" for example p-channel the source needs to be higher than gate for it to conduct
If I remember right, the Pchan needs a positive bias on the gate, and the Nchan a negative bias.
@@robertcalkjr.8325 No, Robert. Exactly the opposite it's true.
@@ΠάριςΑζής LOL! Yeah, I know.
I think my fluke 375 I bad, in just the ohm setting .it isn't zero even I touch both leads
Excellent info
Fundamentals, good stuff. Great videos.
Thank you very much for your videos. I noticed that you recommended a couple of books from Jestine Yong. Do you think it would be a good investment , and would help me , if I would enroll in his electronics course ? I already know quite a bit about electronics and have almost all the test equipments I need to work with electronics. I just think that maybe that would help me get a good grip in electronics repairs. Thanks again for the good videos.
I'm not sure if his book would necessarily be right for you if you already have a good background in electronics, but I learned a few good tips from his books, and so have others I've spoken with. Jestine worked as a repair technician, so he had some practical hands on experience I found helpful. English isn't his first language, so I found a few of his tips were not as clear as they could be, but overall I was glad I purchased a couple of his books. I don't think TV repair is a good business anymore. At least not as a independent like myself.
Thank you very much for your response.
very nice explanation again should be a teacher.
Thanks Dave.
Good video.
Lovely
great vid again thank you
great info.! thnks for explanation..
I'm not sure but ,if anyone else wants to uncover
repair a car
try Saankramer Electronic Magazine System ( search on google ) ? Ive heard some unbelievable things about it and my brother in law got amazing success with it.
Like