Re: Caps Needed for SV25 power supply
As long as it fits physically, there is no problem in using slightly higher voltage or capacitance. Higher capacitance will provide better filtering, although the change is small enough that you (and the motherboard) won't see any difference.
AK0R
Badcaps Veteran
Last Activity: 03-19-2006, 04:06 PM
Joined: 03-31-2005
Location: Hiawatha, IA
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Re: Caps Needed for SV25 power supply
[url]www.digikey.com[/url] is a good source for capacitors. No maker of high-quality parts makes them in those sizes, however.
1500μF is the highest value available in 16v, 10mm. To stay at 16v, the size jumps to 12.5mm starting at 1800μF.
2200μF is available in 10mm and larger for 6.3v. 1500μF at 6.3v or 10v is the largest I've found in 8mm.Re: Caps Needed for SV25 power suppl... makes them in...Leave a comment:
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Re: Trying to Determine if Bad Caps is Really The Problem
Memtest86 and/or Memtest+ is/are not run on-line or from Windows. You download the program, install it onto a floppy or CD (depending on which version you got), then reboot with the floppy or CD, and the program runs automatically. I've attached the latest version of Memtest86 (for use with a floppy) from [url]www.memtest86.com[/url]; I've had problems with the Memtest+ program.Re: Trying to Determine if Bad Caps ...n-line or from...Leave a comment:
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Re: SV25 "Achme" PSU - Deaded
What did you use for replacement capacitors? They need to be high-quality, low-ESR capacitors (as described in numerous places elsewhere on the site); parts typically found at Radio Shack or the like are not adequate for the job.
Unusual to hear about Teapos failing with evidence of bulging and leaking; they usually fail without any outward indication.Leave a comment:
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Re: ASUS motherboard having problems... but good caps?!
The first cap is definitely bad. The second may or may not be, but as you've stated, both are on the badcaps list. Why not take the opportunity to replace everything 470μF and up while you're at it? You can do it now, or wish you had later, when more of the Fuhjjyus give up the ghost. Caps for a power supply (doing everything {except the primary filter caps}, not just the majors) is only about $5 plus shipping.Leave a comment:
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Re: Standardised PCB labelling?
The component labels are more properly called reference designators. The base standard is ANSI Y32.16-1975 (reaffirmed 1989). This was the basis for IEEE STD 315-1975 (reaffirmed 1988). Because these are not easy to find, the following link has all the relevant information:
[url]http://www.aqeds.com/support/rot/rot_ref_des.asp[/url]
Note that this does not prevent manufacturers from creating their own RefIDs based on the standard (e.g., Abit's use of EC for electrolytic capacitors).Re: Standardised PCB labelling?
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Re: Need help with the pc speaker
Not the motherboard that it came from? Measure the resistance from the red lead to the black lead at the end that plugs onto the motherboard. It should be somewhere in the range of 4 to 16 ohms. If you have a very high resistance (>=100 ohms), the motherboard wont' be able to drive the speaker. Obviously, if the resistance is infinite, a wire is broken somewhere, and you can either try to figure out where and fix it, or buy a new speaker....Leave a comment:
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Re: MOVs between L-E and N-E
In American 3-wire installations (L-N-E), the Neutral and Earth are connected at the breaker box. However, the amount of current that flows in the hot wire (Line) also flows in the return wire (Neutral). Depending on the amount of current flow, the distance to the breaker box, and the wire gage, the Neutral can actually be a couple of volts above ground (Earth) due to voltage drop (I*R). No current should flow in the ground (Earth) lead; if it does, it means that the Neutral is open, or the Neutral and ground are shorted at the device. Also, the length...Leave a comment:
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Re: Jou Jye JJ-300AP 300w Fail
Not advisable, since MOVs' damage is cumulative. So any damage that they took before would shorten their lifetime in the new application. Also, MOVs don't generally show any signs of degradation until failure. They fail by one of two means: either they open, in which case there is no visible indication, but they no longer provide protection, or they short, and the high current then blows them apart (which appears to be what happened here).
Because the damage is cumulative, several small overvoltage conditions...Leave a comment:
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Re: Water in Nintendo DS
So, a week-and-a-half later, what's the status of the Platinum DS?Leave a comment:
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Re: Epox 8KRA2I
Why would you want to? There are several good caps (Panasonic FC and FM; Nichicon HE and PW; United Chemi-Con KY and KZE) available in 1000μF, 10v size in 8mm width. All are 20mm long, and readily available. 6.3v is too close for my liking to 5v; I'd much rather use 10v units....Leave a comment:
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Re: Biostar M7MKE Slot A
That's about half as bad as a BE6-II, which has 19 of its 22 majors between the CPU socket and the interface connectors, and that board was a piece of cake. CPU should come out of the socket OK, and accessibility on your board isn't bad at all. Would make a fine router....Leave a comment:
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Re: Need help identifying caps
The caps can be expected to run warm, but not hot. If you think they are unreasonably hot, then something else is likely to be the problem. You don't say what abnormal symptoms the computer is displaying, or the condition of the power supply. A 6.3v rating is more than adequate, if the original caps were rated at 2.5v. A possible cause could be high ripple, resulting from a degraded on-board VRM or back at the PSU. Can you measure the voltage across the caps, and if possible, also measure the AC ripple voltage?Leave a comment:
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Re: Do I Have Bad Caps?
The power supply in my Dell Dimension 4600 is failing in some manner. Either the fan (Adda 80mm ball-bearing type) is failing (possible yes, probable maybe), or the 12v supply is failing. The two primary input caps are Rubycon, but the secondary is full of Taicons, with two Ltecs. None of the caps show visible signs of failure. The power supply was made by Newton Electric. Pictures will be posted in the power supply build thread.Leave a comment:
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Re: Unsoldering old Mosfets and Soldering in new
If the MOSFET is being replaced, why would that matter? If replacement is being performed due to failure or degradation, the parts aren't going to be re-used on another board, so salvagable condition isn't really important....Leave a comment:
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Re: Soyo SY-P4VTE board Caps
How old is the board? Do you know its history? None of those caps are good, so if you value your data and components, you might want to make that board a priority. If you're just learning to solder or recap, the ZM6's should be good boards to practice on until you're proficient. Topcat, Digikey, or Mouser should all have readily-available replacement parts for this board as well as the ZM6's.Leave a comment:
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Re: Do I Have Bad Caps?
If you don't want the board, I'd be interested. PM me with details.Leave a comment:
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Re: Post your bad experiences with Antec power supplies here!
Yes, but it's 700μF twice (once on the input, and again on the output), so the total change is from 4400μF (6600μF in new units) down to 3000μF. Also, I found that my caps on the +12 line were 1500μF, not 1800μF as stated in my previous post, so I'm in the same boat. I still think they will be good enough....Leave a comment:
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Re: Biostar m6tba v1,5
The motherboard is AGP 2x, as is the SpeedStar A50, so this shouldn't be an issue. However, Per's point is valid. Does it POST with the original video card? Could it be a problem with the A50 (the motherboard "sees" a video card installed, so it doesn't give the "no video" beeps, but the card is still bad)?...Leave a comment:
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Re: CDROM Drive bad cap?
This was on the first BE6-II that I recapped. It's running a 700MHz (100MHz FSB) P3. Just to see if it would work, I bumped the FSB to 133MHz. The PC booted just fine, but couldn't find the sound card (AGP video, HD, keyboard, mouse, ISA fax/modem all OK). So, I put the FSB back to 100MHz. The PC would sometimes detect the sound card, usually not. Got another sound card to replace it, which made my 7-year-old happy (it's his computer).Leave a comment:
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