Author: Dave Farquhar

The settings saved on this computer for the network do not match the requirements of the network

Dave Farquhar Windows , ,

If you replace your wireless router with another one, your Windows machines may give you a red X along with this error message when you try to reconnect: the settings saved on this computer for the network do not match the requirements of the network.

The quickest, easiest fix is to forget the network and reconnect. Here’s how to forget a network in Windows 7, and how to forget a network in Windows 10.

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Save money on appliances

Dave Farquhar Landlording, Saving money , , , , , , ,
Save money on appliances

If you want to know how to save money on appliances, I have some unconventional advice: Buy used. Yes, really. Here’s how to buy used (or refurbished) appliances and save big money without getting ripped off.

I’ve had a number of friends get hit recently with appliance breakdowns they couldn’t afford, and since I’m a landlord, I’ve probably bought a lifetime’s worth of appliances in the last seven years. A dead appliance doesn’t have to turn into a financial catastrophe.

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Linksys EA6200 DD-WRT installation

Dave Farquhar DD-WRT, Servers and Networking , , , , ,
Linksys EA6200 DD-WRT installation

I picked up a couple of refurbished Linksys EA6200 routers this past weekend. For whatever reason, DD-WRT isn’t officially supported on them, though it does seem to be a popular DD-WRT router. A lot of people make the upgrade far more difficult than they need to. With some simple hacks, Linksys EA6200 DD-WRT installation is pretty straightforward.

I came up with an 18-step process that I simplified just as much as I could. Unlike some methods I’ve seen, I don’t have you editing any binary files or creating custom startup scripts.

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Solve the Java problem

Dave Farquhar security , ,

I met with a client earlier this week who asked me to go over their vulnerability scans for a bit of a sanity check. He asked some important questions, but one in particular seems worth sharing. What can we do with Java? Can we solve the Java problem?

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Cyber security podcasts I listen to

Dave Farquhar security , , , , ,

Yesterday, after reading a post in which I cautioned about a popular security podcast, someone asked me what cyber security podcasts I do listen to. I wrote this up a long time ago and never posted it for some reason, so now I’m correcting the oversight. Here’s my collection of the best of the best security podcasts.

These are the security podcasts I’ve been listening to for several years now and continue to recommend. Security podcasts are a good way to keep in touch with current issues, and also a good way to get continuing education.

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Repair a Marx 709 transformer

Dave Farquhar Toy trains
Repair a Marx 709 transformer

Internally, a Marx 709 transformer differs little from a Marx 1209, so those instructions work for actual repair. But disassembly is a bit different, so I’ll walk through the disassembly process now.

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Repair a Marx 1209 transformer

Dave Farquhar Toy trains , , ,
Repair a Marx 1209 transformer

Want to repair a Marx 1209 transformer? There are two schools of thought. One is that small, sub-75 watt transformers from starter sets aren’t worth fixing because they are so cheap. The other is that since they are so cheap, you have nothing to lose by trying.

Marx didn’t design its transformers to be fixed, but the design is extremely simple. The hardest part really is getting the case apart and then getting it back together. If Marx had designed them to be serviced, like its competitors did, they would have cost more, so we wouldn’t have as many Marx trains to enjoy today. So it’s easy enough to forgive Marx for this.

Let’s dive in.

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Sakai trains: The “Japanese Marx”

Dave Farquhar Toy trains , , , , , , , , , , , , , ,
Sakai trains: The “Japanese Marx”

Sakai trains were made in HO and O gauge by a Tokyo-based manufacturer and sold abroad, particularly in the United States and Australia after World War II. Sakai’s O gauge product bore a curious resemblance to Marx. I have read speculation that Marx once used Sakai as a subcontractor, and Sakai used the tooling to make its own trains rather than returning it to Marx, but there are enough differences that I don’t think that’s the case.

What I do know is that Sakai’s O gauge product was a curious blend of cues from Lionel and Marx and the trains worked pretty well. They’re hard to find today, but not especially valuable since few people know what they are. They turn up on Ebay occasionally.

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“Super utility” tinplate train cars

Dave Farquhar Toy trains , , , , , , ,

Tin train cars had a variety of methods to couple them together, but by far the most common method was a coupler commonly called tab-in-slot. The tab from one car mated with a slot in the next. All of the train manufacturers used a variant of this method at one point or another, and all of them would be able to couple together, if not for one nagging detail: height.

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Repair a Marx reverse unit

Dave Farquhar Toy trains
Repair a Marx reverse unit

When it comes to Marx repairs, the reverse unit is the end of the innocence. Motor repairs are rather easy; reverse unit repair can be as hard as you want it to be.

I’ll share some things I do that seem to make it easier to service a Marx reverse unit.

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