How to test Diodes

[M3ta7h3ad]

Hmm, only labels I've seen is quite a few of them have what looks like a 0 written on them but thats it. Most have no visible labelling at all :( some larger ones have more text but they're in the minority and are purely numbers only. Guess I'll just have to guess and test.

[GrantsPassTVRepairs]

@M3ta7h3ad Sometimes they use a jumper which is more like a piece of wire. I believe the zero represents a jumper.

[M3ta7h3ad]

My question is how do you identify what is what in surface mount packages?

I am trying to repair a tv and a common fault is a surface mount fuse and diode fail, only I've no idea how to "find it" amongst the other non-descript black squares.

[GrantsPassTVRepairs]

@M3ta7h3ad They are generally designate with a D prefix followed by a series of numbers,

Example. D403 and transistors start with Q. I As far as knowing the part number, I'm not sure.

[markslainx]

lamp test also do work..try making your diode as a switch..if the lamp is too bright then your diode is broken. And if your lamp will go bright then gradually goes DIM your diode is still GOOD!

[woychck4]

Thanks for the video..is was very help full and educational. Also very exciting sorry . LOL

[ik1slo]

Hello, I saw your video on youtube on the crystal radio, can you please send me the data for the coil and variable capacitor, mounted as a tuned circuit, thank you so much

[jphiiarc]

were did you get the capacitors (they're rare)

[GrantsPassTVRepairs]

@jphiiarc There not rare. I soldered them all together in parallel.

[gricius]

haha love your vids.

[McdonaldSpecial]

not wearing safety glasses... you're an idiot.

[1world1love2day]

LOL thanks for taking one for the team in the name of education

[emmanuelfr2]

pretty cool

[Falseproph3t]

does checking a diode still attached to the circuit require a different form of testing?

[GrantsPassTVRepairs]

@Falseproph3t Many times you can test a diode in circuit but not always. I generally like to use the diode check function to see if they test Okay but some use their ohmmeter.

[AeroDurbanite]

That Pretty Cool!!

[kalo93406]

You and all others might consider safety glasses when working in a shop.. ;)

[GrantsPassTVRepairs]

@kalo93406 I agree about the safety glasses. I showed a good example of why people should use them.LOL

[ArcadeGames]

Wow, you almost got killed by a diode lol...

[SimonCowellAI]

what is with the sound in these youtube videos lately, I can barely hear anything

[haz939]

hey thanks for the video trying to fix a computer power supply, so need to know about testing diodes, capacitors and mosfets and I found this video most helpful!!

[mooreonic]

thanks for the vid, helped alot.

we have to do tests on diodes for a practical for our assesment on capacitors and diodes. so thanks alot ill diffenitly sybscribe to your channell and rate 5 stars.

thanks again, i hope to see more.

ps: it really gave a good bang when it went.