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Search: Posts Made By: severach
Forum: Troubleshooting & Designing Networks 11-18-2013, 10:44 PM
Replies: 55
Views: 8,849
Posted By severach
Re: "A Network Cable is Unplugged"

Set the speed to 10Mbps. This covers and solves an amazing number of cable, switch, NIC, and NWay compatibility problems.

Do your test installs to another hard drive so if the problem turns out to...
Forum: Troubleshooting Power Supplies and Power Supply Design 11-18-2013, 10:36 PM
Replies: 11
Views: 4,612
Posted By severach
Re: ~13.8V MOT power supply

1 80A power supply is a lot harder to make than 8 10A power supplies. You'd only go to the trouble to make an 80A supply if you were going to spend it all in one place, maybe a 1000W amplifier.
...
Forum: General Computer Discussion 10-11-2013, 07:27 PM
Replies: 738
Views: 244,399
Posted By severach
Re: Post your system.......

MSI Z68A-G45 (G3), E3-1245 (4 core+HT), nVidia GTX 320, 4GB RAM, poverty case, Dell 265W 80Plus Gold power supply.
Gateway XHD3000 2560x1600.

Just a little overpowered! I'm wishing someone would...
Forum: Equipment Usage, Soldering, Techniques, and Reviews 10-11-2013, 07:18 PM
Replies: 22
Views: 7,597
Posted By severach
Re: Stubborn solder won't leave hole!

A paper clip has the right shape but is the wrong metal. Solder will stick to it. A paper clip bends too easily. You also don't get to choose the diameter of the paper clip so it won't work when the...
Forum: General Electronics Technical Discussion 10-11-2013, 07:02 PM
Replies: 5
Views: 2,394
Posted By severach
Re: Matching VRM MOSFETS on a motherboard

Alpha & Omega AOD472 are common on Dell boards. I have so many I don't even collect them any more unless it's an easy solder board.
Forum: General Electronics Technical Discussion 10-11-2013, 06:52 PM
Replies: 11
Views: 2,973
Posted By severach
Re: MOSFET Tester

Atlas DCA - Semiconductor Analyser - Model DCA55

That gives you go/no-go. The next step up is a curve tracer. If that's not enough get a Semiconductor Parameter Analyzer. That what the pros use to...
Forum: General Electronics Technical Discussion 09-30-2013, 12:41 AM
Replies: 12
Views: 2,220
Posted By severach
Re: Confusion about efficiency of different lamps

Voltage doesn't determine power consumption. Power is voltage times current. Rewiring a 110v motor to run on 220v does not substantially change power consumption. The voltage doubles and the current...
Forum: General Computer Discussion 09-29-2013, 09:36 PM
Replies: 22
Views: 6,920
Posted By severach
Re: Broken am3+ socket -- info?

The sliding top of the socket isn't hard to replace. The trouble is getting an AM3+ socket top of the right brand. I'd try real hard to warranty it.
Forum: General Computer Discussion 08-09-2013, 09:13 PM
Replies: 227
Views: 42,841
Posted By severach
Re: Ratdude's Main rig V3.5

The pins on those connectors are too short to stick through. All you can get with an iron is solder mounds.
Forum: Equipment Usage, Soldering, Techniques, and Reviews 08-06-2013, 11:24 PM
Replies: 10
Views: 2,953
Posted By severach
Re: Desoldering Braid: Tip - Trick

They are all acid based. The difference is what temperature are they active at. Plumbing flux is very strong but the drawback is that it is still active at room temperature so it will continue to eat...
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 07-26-2013, 10:42 PM
Replies: 6
Views: 1,583
Posted By severach
Re: Does anyone here use debug cards?

Port 80 POST cards work very well, particularly for the low price. At a minimum they tell you if your board has life when it won't show video. After a few screwups you start picking up on what some...
Forum: General Electronics Technical Discussion 07-21-2013, 08:29 PM
Replies: 4
Views: 1,297
Posted By severach
Re: Using 2v caps in the place of a 2.5v cap

Get the datasheet on the PWM voltage regulator chip. For example, the highest voltage offered on the ISL6247 is 1.6000v making a 2.0v capacitor safe no matter what processor is installed. If you're...
Forum: Equipment Usage, Soldering, Techniques, and Reviews 07-21-2013, 08:24 PM
Replies: 36
Views: 6,254
Posted By severach
Re: HELP! - my girl is kicking the lead out of the house!

Live in the city? You're getting more lead in a glass of water than you can get from soldering. Tell her to take some Silymarin and quit drinking the water.

She sees the smoke and smells the odor....
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 07-07-2013, 09:02 PM
Replies: 131
Views: 68,068
Posted By severach
Re: Laptop Motherboard Repair

Shorted chips usually heat up when current is supplied to the short. Heat sinks make the heat hard to find. Some good chips will overheat if they are powered by only some of their voltages.
Forum: Troubleshooting & Designing Networks 07-01-2013, 10:07 PM
Replies: 10
Views: 4,562
Posted By severach
Re: sharing internet with equal bandwidth

My Linksys Cisco RV042 has bandwidth control built in. Unfortunately I see a problem. 1Mbps is enough to watch 1 youtube video. 512Mbps is enough to watch none youtube video. Split it up and you both...
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 07-01-2013, 10:06 PM
Replies: 131
Views: 68,068
Posted By severach
Re: Laptop Motherboard Repair

Wall warts are no good for short testing. 1A might be enough to burn the short out. Any more than 1A and the supply will shut down.

A bench supply won't shut down and allows you to control the...
Forum: General Computer Discussion 05-30-2013, 09:48 PM
Replies: 209
Views: 31,052
Posted By severach
Re: Ratdude's main rig V3, maybe

Heat === failure. Little else matters. VIA has the lowest motherboard failure rate and it's wasn't because their tech was better. They ran the coolest. Seems VIA was more interested in low heat than...
Forum: General Electronics Technical Discussion 05-28-2013, 10:57 AM
Replies: 18
Views: 3,195
Posted By severach
Re: Arc gaps on circuit boards?

But the cats all go to sleep at the same time so you need idle base load power at the ready. The cost of free cat power + idle base load power is no less than the cost of running the base load all...
Forum: General Computer Discussion 05-28-2013, 10:26 AM
Replies: 209
Views: 31,052
Posted By severach
Re: Ratdude's main rig V3, maybe

Atom is the new Celeron. Same power & price as the good stuff but a lot slower. Have you built a D525 system that idles at 17W wall?

The 1155 P8B-M has IPMI and iSCSI boot capability which RD...
Forum: General Computer Discussion 05-26-2013, 11:47 PM
Replies: 22
Views: 4,100
Posted By severach
Re: 12gb quantum bigfoot ts as swap

A 12GB flash drive for swap will be better, faster, and cheaper.
Forum: General Computer Discussion 05-26-2013, 10:01 PM
Replies: 209
Views: 31,052
Posted By severach
Re: Ratdude's main rig V3, maybe

Old server boards are only good if you have free power. If power costs money than go with anything 1155 such as the Asus P8B-M. No point in saving money on an aging server only to pay the difference...
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 05-24-2013, 08:26 PM
Replies: 12
Views: 3,584
Posted By severach
Re: Rant: Screen Replacements

Less used screens flooding the market. Thanks to nVidia you can buy a laptop DVD RW for less than $10.
Forum: Troubleshooting Power Supplies and Power Supply Design 05-17-2013, 07:34 PM
Replies: 5
Views: 1,632
Posted By severach
Re: Passive PFC

80Plus ends all that. There's no way a power supply burning up Panasonic capacitors can snag an 80Plus certification. My 80Plus Gold supplies don't have many places they can leak heat.
Forum: General Computer Discussion 05-10-2013, 08:37 PM
Replies: 12
Views: 1,889
Posted By severach
Re: this took forever but i have figured out how!

I got used to Luna so long as all the FX were turned off. Windows 7 has a number of TreeView based windows that won't give up their animation.
Forum: General Electronics Technical Discussion 05-10-2013, 08:26 PM
Replies: 5
Views: 1,608
Posted By severach
Re: Help repairing a missing trace

If you try to bridge the gap with solder the constant flexing will break it. Get the first 4 attached then bridge with a single strand of wire.
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