Re: Stumped this weird G4 power supply problem
So are saying I shouldn't get these.
http://cgi.ebay.com/PANASONIC-6-3V-2...-/400084973893
So are saying I shouldn't get these.
http://cgi.ebay.com/PANASONIC-6-3V-2...-/400084973893
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Re: Stumped this weird G4 power supply problem
Some sellers on ebay (like all things) are selling fake goods including caps.
I'm not saying these particular ones are fake, but unless you know exactly vent and bung look like, you could be getting fakes. Even then, you could be getting a really well made fake.
Most here will tell you to go to mouser or digikey to get the genuine goods.
Originally posted by JOHNBOY--- begin sig file ---
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Re: Stumped this weird G4 power supply problem
god damn chinese people
I should have known, I bought a 1gb flash card from hong kong that was 32mb in size.Comment
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Re: Stumped this weird G4 power supply problem
Careful what you say and who you offend here. Fraud/theft isn't contained to one group or race of people.
Originally posted by JOHNBOY--- begin sig file ---
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Re: Stumped this weird G4 power supply problem
In the case of Digikey, the Canadian web site still ships from MN. I suspect they just don't do enough Canadian business to support having a warehouse here.Originally posted by retiredcaps
They ship UPS overnight, all fees paid for $8.00 flat rate. The only RELIABLE way to get something into Canada in less than a week, is to use a service that also acts as a Customs Broker. Otherwise, it'll sit in Canada Customs until they clear it, usually a week.
A lot of that $8.00 pays for customs brokerage.
They could ship UPS Standard, but trust me, the brokerage fee alone would be more than $8.0036 Monitors, 3 TVs, 4 Laptops, 1 motherboard, 1 Printer, 1 iMac, 2 hard drive docks and one IP Phone repaired so far....Comment
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Re: Stumped this weird G4 power supply problem
Thanks for the tidbit. I looked at their "Canadian" website and couldn't find out how/where they originate their orders from.
Originally posted by smason--- begin sig file ---
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Re: Stumped this weird G4 power supply problem
There is no brokerage under $20Comment
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Re: Stumped this weird G4 power supply problem
Some good news at least. I re used the forbidden caps on a totally different power supply and got it working. It was the 47uf and 0.47uf on the G4 quicksilver with a start problem.Comment
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Re: Stumped this weird G4 power supply problem
bad news:Originally posted by JOHNBOY
that will not last... get good ones for it while you are at it... or else you might have a problem worse then a bad psu. try a fried board... idk if they used a two transistor 5vsb circuit on there or not, if they did, and the cap driving it goes poof, then the board gets 12v of hell sent to a spot rated for 5v, and then you have a FUBAR board... dead chipset and fried other parts.sigpic
(Insert witty quote here)Comment
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Re: Stumped this weird G4 power supply problem
The quicksilver is an old system. I don't care if it blows up. I replaced two 0.47 and one 47. I wouldn't have even changed the big ones if they were bulging and leaking brown stuff. I just wanted to see if I could get it going and do something useful with the bad caps.Comment
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Re: Stumped this weird G4 power supply problem
UPDATE
The repair has been a glorious success. I went back to some of my local stores and got rubycon and samxon caps and another one with gold labels which looks good and called ultra low esr.. I replaced the 2200 16v and the 3300 10v as well as a couple of 0.47 and 47 and the PS turned on. I will still do the rest when my caps arrive from ordering but this is working for now.
Thanks to toasty who seems to know everything.
After I burn this in for a couple of hours I will try my luck at the scamsung version.Comment
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Re: Stumped this weird G4 power supply problem
Glad you got it running.
>>Thanks to toasty who seems to know everything. <<
Whoa there! Thank you, but I don't want the ego trip. There are *MANY* others here with far greater knowledge than I. I just have a lot of hands-on with these units. (More than I care to admit, some days.)
Please be sure to start a new thread for the Samsung.
Toastveritas odium paritComment
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Re: Stumped this weird G4 power supply problem
Ummm...
>>another one with gold labels which looks good and called ultra low esr<<
Why did i get chills when i read that?
Khron's Cave - Electronics - Audio - Teardowns - Mods - Repairs - Projects - Music - Rants - ShenanigansComment
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Re: Stumped this weird G4 power supply problem
because, like i said earlier, the good ones do not say "low esr" or "ultra low esr"... nor do they come in such a colored sleeve... johnboy hos bought crap again... and the rubycons and samxons might not be low esr... i wonder whar series they were...Originally posted by Khron666Ummm...
>>another one with gold labels which looks good and called ultra low esr<<
Why did i get chills when i read that?sigpic
(Insert witty quote here)Comment
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Re: Stumped this weird G4 power supply problem
The 'forever' brand caps are working fine... Going strong :\Comment
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Re: Stumped this weird G4 power supply problem
I got my cap tester from ebay. Yeah I know don't even say it. It actually works half decent for a home user like me. The reason I'm mentioning this is because I had a chance to test all the bad caps I pulled from these and the results were amazing. Almost all caps were good and almost all TEAPOS were bad.
Everything was testing withing 2-30uf which is normal for this $29 unit. But the teapos were nearly all dead. The 220 caps were testing around 100 and the 2000+ was testing at 400-500uf. I didn't do a second test for over UF but at least half have been thrown out for being way under.Comment
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Re: Stumped this weird G4 power supply problem
Capacitance is only a part of the picture. ESR is the part that determines the suitability of these caps to do their jobs, especially in these SMPS's. Caps that read good in capacitance, may be failed in ESR.veritas odium paritComment
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Re: Stumped this weird G4 power supply problem
i was going to say, $30 for an esr meter would be the bargain of the year (aside from the extinct dick smith meters)... esr matters more in this case... like testing how well an engine runs based solely on RPM w/o checking the emissions...sigpic
(Insert witty quote here)Comment
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Re: Stumped this weird G4 power supply problem
Pics? Link? I'm curious because if the price is low and if it does ESR testing, I may spring for one.
Originally posted by JOHNBOY--- begin sig file ---
If you are new to this forum, we can help a lot more if you please post clear focused pictures (max resolution 2000x2000 and 2MB) of your boards using the manage attachments button so they are hosted here. Information and picture clarity compositions should look like this post.
We respectfully ask that you make some time and effort to read some of the guides available for basic troubleshooting. After you have read through them, then ask clarification questions or report your findings.
Please do not post inline and offsite as they slow down the loading of pages.
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Re: Stumped this weird G4 power supply problem
No it doesn't do ESR. I plan to get one of those in the future but I'm just starting out with this one. It takes a basic reading and can confirm which ones are bad. I know this isn't a bullet proof system but I wasn't going to spring $75-$200 on the ESR meters just to fix a couple of power supplies. This was actually $29 with shipping included and does up to 20mf.
By the way what is considered a bad cap. more than %5 +/- of its value ?Comment
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I have wanting to do this project for quite sometime now and I finally found a switching power supply that will work on this desoldering gun station ZD-915 that the original switching power supply took a shit and just was not worth trying to fix it because this switching power is not quite big enough to handle the heater element and the vacuum pump
One note when I tested the switching power supply and the voltage control board I noticed that this desoldering gun heat up much faster than the original switching power supply which I was really surprised by to the point that I might buy... -
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Upon bringing it home and plugging it up, it showed a standby light.
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The screen seems to blackout and stay black, but with a flashlight I can see the display.
With my Playstation 4 connected via HDMI, and running a game I can hear sound.
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