Testing Capacitors part 1

[eogg25]

years ago i took a home tv and radio course from coyne eleltric school and they showed how to test capacters in a similar way. useing a voltage source from a radio and an ohmeter. the only thing you couldnt do was see what the capacitance was. this was field expediant way to do it. not for lab work

[usmcbballer]

Wow HP actually made something cool. :-) Great Video and thanks for the class.

[Eskobar20008]

Thank you !

[Zylstra555]

Thanks, that was very helpful! I have a bunch of capacitors and resistors I need to go through in a wired circuit... one of them is bad, and I have no idea which one. Now I can do a basic test. Thanks for sharing.

[old64goat]

@Zylstra555 I am glad it was helpful.

Thanks for stopping by.

[essoterric]

I like your video. It is honest and it is real. Keep up the good work.Lots of young folks need the experience you are sharing with them. Make some more videos.

[old64goat]

@essoterric Thank You very much, but sad to say I no longer have a shop or test equipment.

[madamerotten]

If I recall corrrectly, the H-P 410C has no battery for the resistance measurements. 0.6V is derived from an internal power supply.

[mikewm9v]

well the component tracer is good for smaller values , the problem nowadays are caps on the secondary of switching power supplies. caps that used to last years at 60 hz just dont make it at 100 khz frequencies. the real problem is the electrolyte used in the parts. that is a byproduct of fish oil because of the scarcity of petroleum products.Thus the smell when heated with an iron

check out any simple esr meter circuit made with a couple resistors, a scope and a signal generator

[mikewm9v]

never trust anyone who still has a moving meter multimeter on their bench. the correct way to check esr on an electrolyte is to monitor the series frequency response of a 100 khz signal with an oscilloscope

[old64goat]

@mikewm9v The BEST way to test a capacitor is to put the RATED voltage on it and monitor the current leakage.

Been doing that for many years.

I was using the ohm meter ONLY to show how I was taught and is NOT the right way, you need to do it like I discribed above.

[archeng123]

hey you got a lot of gear there mate what are you doing with all that stuff

[Lockemeister]

Thanks for such a great video.

[gymkata98]

Hey, I just wanted to say I like this video and the other one on testing capacitors! I am really having trouble trying to figure out wether the capacitors in my TV are bad. The two that were bulging have been replaced but it's still coming on for a while and then turning off. I suppose I will have to check ALL the capactors in the power circuit. Will I have to take each one off the board to check them accurately? I'm guessing yes?

[old64goat]

@gymkata98, Is your TV solid state or tube?

I know very little about solis state, if it is a tube set, it could be any number of things, leaky capacitors resistors off value, gassy vacuum tube, etc.

I do not have my shop anymore and all equipment is in storage.

I would post your question on the ARF forum,.antiqueradios

[n2motocross]

Nice video. Very impressive shop and gear you have.

[old64goat]

@n2motocross, Thank You very much, but as you may know, I no longer have that shop.

I had to give it up because it was a rented space.

[smeezekitty]

I just use a capacitance meter.

[old64goat]

@smeezekitty, that will not show if the capacitor is leaking, you need to apply the rated voltage on it.

[icommand]

what is your profession?looks like u spent a lot of effort to make this lab of yours..I am inspired..

[old64goat]

@icommand Retired in the janatorial field, not much of a profession.

This electronic shop was set up in 1966, this is all a hobby with me.

[supraman200]

Thankyou for the tips.

[whiskeyify]

wow a VTVM, a great meter to have. We use the multimeter today because it's so much easier and faster to check components.

the old time radio repairmen pretty much checked everything with just a meter.

My teacher started out in the business around 1950 so I was taught from an old timer like him.

[old64goat]

@whiskeyify Thanks, yes a VTVM is a must, but I find using a DMM more often.

Thanks for watching.

Bill

[justicelut]

bill thank you for your videos they are informative and your explanations of circuit paths etc are very easy to understand. keep up the good work

regards steve

[old64goat]

Hi Steve, Thank You very much, I appreciate that.

Bill

[isaham]

Thanks for the part 1 and 2 vids.

At 3:05 you could use your Fluke 73(part 2) to measure the ohmmeter battery voltage of the HP vtvm. The Fluke should display the HP battery voltage (1 1/2 v?) and the HP should show the input impedance of the Fluke (11 megohms?)

[old64goat]

@isaham, Yes I could, but I never bothered to do so.

Thanks for stopping by.

Bill

[amartinjoe]

WHOAH! that's quite a collection of equipment you have; thanks for uploading this. I'm surfing youtube for videos about electronics to complement my online course; this is very helpful.

[old64goat]

Hi Joe, Thank You very much, I appreciate that very much.

I am glad you stoppid by.

Bill

[ColmenTse]

good job five stars

[old64goat]

Thanks ColmenTse, I appreciate that very much.

[iamhe999]

Even a small shed at the end of the driveway, or enclose the car port... to make your lab/shop, or if you have a guest room, or a his and hers bedroom... I transform the his bedroom into my shop/lab.

your videos care be very helpful to upcoming young techs and engineers... look at all the views you got!

[old64goat]

Hi iamhe999, Well I appreciate that very kind comment, but as I mentioned in answer to another comment, we live in a mobile home park and a workshop of any kind would not be permitted.

The shed is full, butI do have a place to set up a shop, but it is on the second floor and my knees are shot so I have not pushed for setting up another shop.

It sure is good to see all those views I got.

When you do not own your own land, you can't just build a shop.

Thanks you again for those kind words.

[iamhe999]

In my life, a lab/shop is more important than having a living room, or even a bedroom, I am content to have my sleeping quarters in my lab/shop/cave. Ff course I need a fully functioning bathroom, and access to a kitchen, but I could make a small kitchen part of my lab/shop/cave. I would sooner turn a garage into a lab/shop/cave rather than waste the space on cars. my lab/shop/cave is also my music/practice entertainment room. Men need their Cave.

[old64goat]

We live in a mobile home and when I had my shop that was located in my brothers attic at his apapartment.

I am married, I could never have a workshop in our livingroom.

Don't want a dirvorce!....Hee Hee.

[iamhe999]

prepare an advanced directive.. of where your electronics should go.. certainly not to a land fill.... the recipient could come get the stuff or pay for the shipping.. Me and my buddy are discussing doing this.. we are both 65.

[jonnyfrag2k]

Men need their cave. No truer words have been spoken.

[old64goat]

Hi jonnyfrag2k, Yes they do, I lost my cave....LOL.

Bill

[iamhe999]

There are guys like you all over the US with garage shops loaded with vintage electronic equipment. You are very interesting. It would be nice to have a place on the internet where all these home shops can be seen, and a list of gear and manuals available there. We have to think about what will become of this gear when we die. We should make sure all of the gear goes to someone who would keep it functioning, maybe a internet swap shop, so that other guys can acquire vintage and newer gear.

[old64goat]

Hi iamhe99, That sounds like a great idea, if us old goats like myself don't pass it on to someone younger that will appreciate it, all this stuff will end up in a landfill.

When I kick the bucket, this stuff may go to the dump.

I don't have a shop anymore, some of the gear is in storage at a friends place.

Bill

[kevykev38]

Why are you yelling at us?

Thanks for posting this!

Great knowledge

[old64goat]

Kevykev38, Yelling?????

Don't know what you mean.

Thanks for stopping by.

Bill

[kevykev38]

Just joking around. It was early morning when i viewed your video. Your "Hello ther evrybody" Woke me up ..Scared me a little bit lol..Its all in good fun. Hey i just got a 1939 general electric g-99 console radio everything is there ..What should i tackle first.?

Thanks

[old64goat]

pull rectifier tube, plug in did bulb tester and see if power transformer runs cool or luke warm, after an hour.

Replace filter caps, and wax/paper caps too.

Bill

[kevykev38]

Ok did bulb test and transformer is fine. I replaced all b ut one capacitor. It is a 20mfd 450vdc it has 3 leads two red and one black . I know the black is ground and the red is power positive. Where can i find a replacement ? Or can i use a two capactors?

Thanks

How's the new shop coming?

[old64goat]

You can use two caps with the negitives tied together, that will go to where the black wire went.

The shop is at a standstill now, have not done anything yet.

Thanks for stopping by.

Bill

[desertbard]

Maybe you should open your VTVM every couple of years to check the terminals on that battery.