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Joined this site a short while ago to get info for the 2215 scope my friend gave me. Got interested in other models and then decided it might be fun to get some more and see about fixing them up or

I do understand that,? my reply was more directed at fellows with the color CRT versions,? but for the 540 and it's ilk, mayhaps you could at least select the color of your monochrome.? Regarding

Several things about the TDS540, from what I've understood. One is that the BIOS is not smart enough to write in color, secondly is that IIRC the graphics chip is wired so that all outputs are going

John, I had the exact same pattern and it turned out to be noise on the AC mains. Turning off fluorescent lights did wonders to reduce it. The collector sweep comes directly from the AC through a

So $230 bucks worst case on top of the cost of a TDS784D vs a Siglent. I know there's not a lot of comparison other than you stick a probe in there and you get a wiggly line interrupted by a massive

Case in point: http://www.simmconnlabs.com/1401/2606.html I used one of these kits to bring my TDS784D back to life (dying CRT, what else is new?) The result was nothing short of amazing. Happy

There are people marketing solutions for the dim CRTs on the old TDS scopes. As far as I know, all use the rear panel VGA output to drive a modern display mounted where the CRT used to be. A little

I wonder if an OLED screen is available in the proper size.? Those are nearly as good as a color CRT in color "pop" and good dark black reproduction,? and much better than the shuttered CRTs in

Are there locks on the drawer slides that drop into place when you pull it all thew way out? If so you push in on them, while closing the drawer. Michael A. Terrell

After many years, I attempted to open the drawer. I was successful, but it didn't open smoothly and I cannot close it now. Looking underneath, there is a plate covering everything but the last 3 1/2

Many years ago, I was playing with transistors when they (almost) first came out. It's a learning process. I've got electronics that are old, but I've decided to concentrate on mostly the solid state

I've seen several scenarios. One has a tantalum capacitor directly across the power supply, either on the main board or on an auxiliary board. A de

Thank you John. I will start with what Albert is sending. I agree, that it would be nice to have original paper manuals. Pdf and jpg files are great as original paper manuals are expensive but a real

There are some articles about refurbishing the LCD shutter. You get to figure out how much the return will be. There are LCD displays that I think the 544A would manage. If I had the option (I have a

That would be great Albert. My A9 layout is tough to read. If it wasn't for the grid location list I would have to have guessed what was what. Now it looks like it's on to other boards to get that

Uh-oh. This is what happened to me. I started with a slightly broken 2465, got hooked fixing it and now I'm knee deep in Tek scopes. Have fun - IMHO each of those old service manuals is education. If

Thanks for the nudge Harvey. And for the helpful suggestions from other scope ninjas here. I have some breadboards and lots of passive components...even a few transistors. Maybe if the smoke clears

Thanks guys. The 575 in my possession has no "bottom" plate, either over the EHT box nor the 'scope main chassis. The second photo is of the underside "as-is". I can't see how ether could be attached,

Siglent makes the very low end Lecroy scopes. At Lecroy prices, they suck. At Siglent prices it's a whole different story. The shuttered CRT on my 544A is probably a bit dim. I can hardly see the one

You should get the Tek Concepts Book on TDR.Lots of good info there. HankC, Boston, WA1HOS