Stumped this weird G4 power supply problem

[Khron]

Re: Stumped this weird G4 power supply problem

More often than not, electrolytics are specced with a tolerance of +/-20% (code letter M, on some).

Aaaand you might wanna check the FAQ Preferably ALL of it (well, the first 11 posts, at least)

[JOHNBOY]

Re: Stumped this weird G4 power supply problem

I put a one of the low ESR caps in the pic to tease you guys.

[Khron]

Re: Stumped this weird G4 power supply problem

It would be nice if we could actually SEE something there, too

[JOHNBOY]

Re: Stumped this weird G4 power supply problem

It would be nice if we could actually SEE something there, too

What's the problem with it. The pic looks fine to me. I know its low res but I took it on my nokia with no flash.

[Khron]

Re: Stumped this weird G4 power supply problem

Well, a better look at that "low esr" cap, for instance? Or maybe i just missed the object of the "tease"

[JOHNBOY]

Re: Stumped this weird G4 power supply problem

This was my original intention before you guys set me straight. The upper left with the gold is the ultra low ESR, right below it in blue is 'forever' and some other unknowns, some of the littles ones are rubycon and samxon, the little ones on the strip are IT or ITT. My good ones are coming next week.

[JOHNBOY]

Re: Stumped this weird G4 power supply problem

Looking at it now altogether and it does look like a ghetto recap.

[Scenic]

Re: Stumped this weird G4 power supply problem

i wouldnt even bother soldering that crap in o.O

the only useful (quality) caps are the nippon chemicon (the brown one) and the panasonic above of it. both not low ESR though..

[retiredcaps]

Re: Stumped this weird G4 power supply problem

I'm still learning about DMMs, but how is this cap tester from ebay different from a DMM that has capacitance tester built in (other than min/max range)?

BTW, for the Canadians, I see that Canadian Tire has their full autoranging DMM on sale for $20 (regular $60). This one has a capacitor test included.

See (Product #52-0052-2)

http://www.canadiantire.ca/AST/brows....jsp?locale=en

Manual is at

http://sitebuilder.tradeeasy.com/sho.../52-0052EN.doc

Manual says 40nF to 100uF which would be limited use for LCD monitor testing as many the caps that I see bloated are 470uF, 680uF, and 1000uF.

And yes, I have been to eevblog and watched Dave Jones' multimeter shootouts with facisination.

I put a one of the low ESR caps in the pic to tease you guys.

[JOHNBOY]

Re: Stumped this weird G4 power supply problem

I'm still learning about DMMs, but how is this cap tester from ebay different from a DMM that has capacitance tester built in (other than min/max range)?

It isn't any different in function except that those ones included in a multimeter generally have a smaller range. The ones built in to a DMM are 200uf to 400uf. I'm sure there are better ones but the $50 range is all under 400uf. So I get up to 20mf with this and I already have a good DMM so I didn't want a cheap 2 in 1. Some on ebay went to 2000uf , even that isn't good enough for a G4 as the trouble caps are 2200/2700/3300.

Where do you see a capacitor tester in the CT model ? That seems like a big sale but really that DMM is usually $20-$25 from the stores I go to without a sale.. It isn't bad for $20, if someone needs a first model this is a good buy.

[retiredcaps]

Re: Stumped this weird G4 power supply problem

Some on ebay went to 2000uf , even that isn't good enough for a G4 as the trouble caps are 2200/2700/3300.

Where do you see a capacitor tester in the CT model ?

The cap function is just right of the off button on the DMM. The cap probe jack is the same as the volt/ohm. It is also documented in the manual for this DMM.

I see that some LCD and plasma TVs use 3300uF caps.

[JOHNBOY]

Re: Stumped this weird G4 power supply problem

I see now.. but only up to a 100uF

[Khron]

Re: Stumped this weird G4 power supply problem

JOHNBOY, i think you'd be best off checking the BadCaps stock (on the home page) and place an order here. At least you'd be sure to get quality low-esr caps.

Disclaimer: I have no business interest, i only believe it would be the simplest way out for all parties involved

[JOHNBOY]

Re: Stumped this weird G4 power supply problem

I contacted the guy who sells them. He never replied, I contacted him again 2 weeks later, he replied this time but never replied to the order request. Waste of time.

[JOHNBOY]

Re: Stumped this weird G4 power supply problem

Which series are acceptable out of these for my power supply ?

[370forlife]

Re: Stumped this weird G4 power supply problem

You don't have to email him with your order, just go to his store on the main site and start shopping.

https://www.badcaps.net/pages.php?vid=22

https://www.badcaps.net/pages.php?vid=24

[ratdude747]

Re: Stumped this weird G4 power supply problem

yeah, go shop and have fun... use the store...

[JOHNBOY]

Re: Stumped this weird G4 power supply problem

No good. He only has about half of them required and out of that half several are out of stock.

[ratdude747]

Re: Stumped this weird G4 power supply problem

didgikey or mouser then...

[JOHNBOY]

Re: Stumped this weird G4 power supply problem

I'm fine. I already ordered most of them, just need to know what works out of those rubycons for the last few.