How to visually find a bad capacitor on any power board
Пікірлер: 40
@PatrickRibbsaeter5 жыл бұрын
simple great video.. thanks
@carlosedwardos4 жыл бұрын
You are correct about a bulging capacitor being bad, but your test of the capacitor was woefully deficient. You only tested the capacitor for capacitance, in the case of many bad capacitors I run into daily, they would pass your test as good! - what you FAILED to test for was ESR (equivalent series resistance) and even more importantly, DC leakage (which is an electrical leakage, not to be confused with a physical leakage of the electrolyte inside)
@nonsensicalfox2 жыл бұрын
Do you know of a more comprehensive video that covers all of this?
@sup206910 ай бұрын
@@nonsensicalfox Wondering this myself.
@alvin103887 жыл бұрын
Thank you for the tutorial.My first project what am building I have apply too much heat during silder procces could it destroy the quality or other factors of the capacitor.?
@AsifAli-pq2eq8 жыл бұрын
Amazing video sir!
@whoami6964 жыл бұрын
man, have any idea how to test a film capacitor KNB2520 class Y
@naderhumood11995 жыл бұрын
Good job liked it
@jeffreystroman28114 жыл бұрын
Something I picked up from an hvac guy, after checking this measure the VDC of cap and watch it ramp down as meter bleads down the charge given by meter when checking for resistance ie short.
@ashleymcgovern76877 жыл бұрын
Agghvwas looking for about new solid state capacitors. You can tell a bad older style capacitor by looking at it, like you show (bulging or burst caps etc). I wanted to see if there were any tell tale signs for solid types? Guess I'll just have to test them with the meter from the backside of the board.
@CollosalTrollge11 ай бұрын
I have a cooler master and one of the 2 big capacitors has leakage, can this causing the fan of the psu to spin up and then not spin up ? intermittent behavior. I am hoping if i can change the capacitor my psu will be fine again.
@RioRio-pc5vl6 жыл бұрын
can we check filter capacitor
@treadmillrepair7546 жыл бұрын
This is a Fluke 287 or 289. I have one Fluke 289 and many other more. This is one of the best multimeters of Fluke but if you want to test capacitors is better to use a n ESR meter. Cheers.
@diddydooffurz59733 жыл бұрын
I have this option also on my multimeter but it shows 1 all the time no matter how i put it. It is a cheap one though, can this be the problem? I cannot measure the capacitor
@vant48887 жыл бұрын
Unfortunately this does not always work. I once bought really cheap 64V 10uF capacitors, I have suspicions of course but multimeter and ESR meter showed normal parameters - correct capacity and 1-2 Ohm resistance. Everything was ok until I put one of them in PS filter where it should have been smoothing 17V average +- 3V ripples from flyback. It started to heat really quickly. So I guess the electrolyte leaked out but I was unable to detect that.
@mcjelo5662 Жыл бұрын
Ii.ooooo9.g.ooo.q.iaaqdt
@surgingcircuits69553 ай бұрын
Not sure why you were swapping the leads/polarity on a polarized cap. Pls explain, thx.
@Bianchi77 Жыл бұрын
Nice info, thank you for sharing it :)
@MrOner076 жыл бұрын
thank you for this knowledge video..keep it up!
@richardboyd44772 жыл бұрын
Thank you
@gersanaqq99056 жыл бұрын
nice multimeter even if its set to continuity it still gives the reading for nf..
@GuitargreatАй бұрын
I have the fluke 287 really similar
@arshiafas93612 жыл бұрын
thanks bro
@newbsensei55283 жыл бұрын
Very educational video sir. how about for resistance? Is there a way to determine if the capacitor is faulty thru resistance parameter? Thanks!
@bigbasil1908 Жыл бұрын
From what I understand, in a bad capacitor the capacitance will be low and the resistence high
@user-ng4fc8zu2j4 жыл бұрын
That multimeter you have is worth the cost.
@anotherOneMore73 жыл бұрын
Is there a way to test a capacitor it without removing it from the circuit?
@lukelandmesser93313 жыл бұрын
If you can get access the the bottom of the board and remove al power, it does the same thing.
@adam_krol3 жыл бұрын
mesr 100
@arpeemac2 жыл бұрын
"bulged" - that's the word you were looking for.
@ondaride7774 жыл бұрын
This is too obvious. Very often bad one and good one show same reading so whatchagonna do?
@peteleoni9665 Жыл бұрын
Note to viewers: basically starts @ 3:30, amounts to: You can test a capacitor with a capacitor tester, bad capacitors bulge"
@tyrellwreleck42264 жыл бұрын
x2 isn't enough
@SalimKhan-gk1fh3 жыл бұрын
The word is bulged when the top of the capacitor is bulky as you called it it is ‘bulged’
@daddypop16527 жыл бұрын
you should take better care of your iron
@snoopda1andonly7 жыл бұрын
Gotta love when the comments are not related to the content of the video, but anyway; what I used to point out the capacitors was not a soldering iron, it was a screwdriver. Good try though.
@jacksondirua44843 жыл бұрын
half the time of this video is repetetive, thanks though.
@Asian_Connection3 жыл бұрын
You look like a master. Can you just point me in the right direction? I have a Mark Levinson no.27 amp. When I turn it on I heard a strong pop on the right speaker and then the unit went into protection mode. Even time I turn it on after that the power switch would pop back to off. Same result with all cables off with only power plugged in. The power light still lights, fuse is good. Can anyone give me some guidance?