Re: Polymer caps and retro video games
Yet, there are plenty of electrolytic capacitors out there, 40 years old, in good working condition....
rugger
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Last Activity: 04-03-2023, 10:52 PM
Joined: 02-02-2005
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Re: Polymer caps and retro video games
Panasonic FR and FS series capacitors will do just fine. Inexpensive and good range and availability.
What is available in your local market may be different.
I'd replace general purpose filtering capacitors with low ESR capacitors where ever I find them.
I would also check and test capacitors before replacing them. Capacitors that look and test fine on circuits that are still working shouldn't be messed with. Changing things on any board with a soldering iron is not risk free. Always...Leave a comment:
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Re: Polymer caps and retro video games
Nah, I mean that you shouldn't be changing from standard electrolytic caps to different types ... in virtually all cases.
In fact, if you were to pull the vast majority of the capacitors out of things in your collection, you are likely to find that they are all still good, with few exceptions (to the specs of the original capacitors of course, modern electrolytic caps tend to be higher performance than those of the 80's and 90's) It would only be devices with particularly poorly made capacitors, or those under...Leave a comment:
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Re: Polymer caps and retro video games
There are modern equivalents of electrolytic capacitors from good brands for ANY capacitor you would find in any of the consoles you mentioned above.
Only time I would suggest using polymer capacitors would be to replace the very low ESR caps that appeared on some later motherboards (Pentium 4 and Athlon XP motherboards) that are no longer manufactured.
Otherwise there is always an equivalent to what you are looking for on the standard electrolytic market.Leave a comment:
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Re: Antec PSU - Panasonic FS capacitors
Happy to report, after 3 years of decent use, this smartpower PSU is still working great.
It has the 5V ooomph to power any retro motherboard that passes my desk!Leave a comment:
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Re: cap testing
I probably should be clearer and state the right problems, as I was recalling from memory why I bought the expensive meter.
The main reason to get the more expensive meter is that you can often do ESR testing in-circuit with the expensive meter, so you don't have to unsolder the cap to do basic testing.
This meter is also a good design for in-circuit ESR testing, even though you build it yourself: [url]http://www.altronics.com.au/p/k2574-esr-meter-kit/[/url]Re: cap testing<br /> <br /> <br /...robably should...Leave a comment:
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Re: cap testing
Only problem with these LCR meters is that they don't work well for faulty capacitors.
They are sorta/kinda OK for capacitors in good condition. But no good for faulty or capacitors in otherwise poor condition.
My main tester is the peak atlas tester: [url]https://www.peakelec.co.uk/acatalog/jz_esr60.html[/url]Re: cap testing<br /> <br /> Only ...s in otherwiseLeave a comment:
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Re: Swapping japanese/generic electrolythics with solid-states
You won't find a solid polymer capacitor at 450V.
[url]http://br.rsdelivers.com/product/rubycon/450cxw220mefc18x50/rubycon-aluminium-electrolytic-capacitor-220%CE%BCf/7672832[/url]
This capacitor would be a good match if it fits (might not, pretty tall package)Re: Swapping japanese/generic electr.../7672832[/url]Leave a comment:
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Re: "Sima" brand 325W inverter... works currently but...
In my opinion, the sooner you replace capacitors you suspect will go bad (or are going bad) the better.
It is perfect if you can repair a device before it starts showing symptoms of problems, because that means nothing has been damaged by the faulty caps. Waiting until it releases it's magic smoke means much more work.Leave a comment:
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Re: Fun with fixing I-Micro power supplies
What fun is there in modding or messing around with a high quality PSU with Japanese caps and all the good stuff. There really isn't much you can do to improve such PSUs.
These junky PSUs on the other hand, offer much more exciting opportunities. I didn't repair a truepower 380W PSU because it was cost effective, I repaired it because it is fun to tinker, learn, and now I got it fixed and didn't kill it, I have a nice PSU for 5V heavy systems compared to modern 12V heavy PSUs.Leave a comment:
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Re: New Caps for amp power supply
Looking at the design of the Quad 405 from pictures online, the following caps would be suitable replacements:
[url]https://au.rs-online.com/web/p/aluminium-capacitors/8526294/[/url]
10000uf at 80v
They are not specifically high performance, but there is no reason you would need anything higher performance than this.Re: New Caps for amp power supply<br...8526294/[/url]Leave a comment:
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Re: Antec PSU - Panasonic FS capacitors
Ok, so I'll just recap all the capacitors I replaced:
4 x 4700uF 10V - Replaced with Panasonic FS 3900uF 6.3V
2 x 3300uF 16V - Replaced with Panasonic FS 3000uF 16V (was a pain to fit as caps were bigger than original)
2 x 1uF 50V - Replaced with Panasonic PW 1uF 50V
1 x 220uF 16V - Replaced with Rubycon YXJ 220uF 16V
2 x 1000uF 10V - Replaced with Rubycon ZLH 1000uF 10V
1 x 470uF 25V - Replaced with Rubycon YXG 470uF 25V
2 x 10uF 50V - Replaced with Rubycon YXF 10uF 50V
1 x 47uF...Leave a comment:
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Re: Average lifetime of your discrete video cards?
Yep, was looking through my memory for that capacitor. The 7300le had those Sacon FZ's all over it. Looks nice when new, but the caps were junk....Leave a comment:
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Re: Average lifetime of your discrete video cards?
Hmmm, that is a pretty difficult question.
I remember only a few cards failing on me, including:
a) Nvidia 7300LE - Bad capacitors (the good old surface mount electrolyic's that look like polymer caps)
b) ATI 5850 - Just stopped working after a few years in storage. No idea why.
c) ATI 5450 - Artifacts and other weird problems.
d) Nvidia 9600GT PCI-e - Probably a bumpgate failure.
The rest of the cards I have owned either still work or I've given away years ago as I outgrew...Leave a comment:
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Re: Antec PSU - Panasonic FS capacitors
Wow (I thought removing the semi-conductors and heatsinks was mainly only done by reviewers to better identify the different regulators)
That is far more work than just working around the heatsinks with a pair of pliers.
I've done some basic measurements:
5V rail, measures about 5.1V with about 20mV ripple.
12V rail, measures dead 12V on the dot and I get about 40mV ripple.
I'm pretty happy with that....Last edited by rugger; 03-23-2018, 03:58 PM.Leave a comment:
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Re: Antec PSU - Panasonic FS capacitors
Seems like I have been successful. Power supply is now working again!
Changed all electrolyic capacitors except a 10uF Teapo hiding under a coil that was pretty much impossible to get out. Didn't feel like taking the coil out for a capacitor just to change a capacitor that is still good!Leave a comment:
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Re: New Caps for amp power supply
Really, probably best to just measure the diameter and height of the existing caps. see if it is soldered/clipped or screwed in. Also note the voltage and uF of the capacitor.
Since it is the filter caps for a linear power supply, they are not under that much stress and you could use virtually any capacitor of suitable dimensions, voltage and capacity. The original capacitor, being of 1970's or early 1980's vintage, would not be anything special....Leave a comment:
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Re: Antec PSU - Panasonic FS capacitors
Already have the 3900/6.3's Panasonic FS. Will probably install them tonight when I get a chance.
Will see if this whole project is a bust or not
Leave a comment:
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Re: New Caps for amp power supply
You really should be trying to replace it with like for like. You are overthinking things and that is more likely to cause an error.
Normally if you use small capacitors on the power line, they go near the the power input to the ICs and transistors to reduce localized line ripple on those devices, rather than on the PSU.
Really, the most important thing is buying a capacitor from a good brand in the right size and shape to make installing it not a big pain in the butt.Leave a comment:
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Re: New Caps for amp power supply
Are the existing capacitors faulty/leaky/measuring bad, or does the amplifier exhibit excessive 50/60hz hum?
If not, I wouldn't touch it. Second guessing the engineers of your amplifier isn't a good idea unless you really know what you are doing.Leave a comment:
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