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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

mentioned. John - Groups.IO doesn't have any sane searching of photo albums, so best to link the album in your messages.

I have a couple TDS754s. An 'A' and a 'D' - while I agree that the 'A' is a little slow to respond at times when doing more processor heavy work, the 'D' is very snappy and responsive.? I find little

That's a LOT of progress Russ! With some more experience you might have thought already of a shorted C1549 after posts by Harvey and Fabio IIRC. One was that as good as zero output is a significant

My TDS784D is only turned on when I need the bandwidth or one of its features, I'll usually reach for the 2467 or the HP54622D - in that order of preference. If Rigol is under consideration, you may

i have the papier version for en After 25000?? ,but it conversation before modèles ,to repair power rails you need to switch through all the Book ,but à good start is how PS operates ,then go to

Hi Russ, you mean board A9? I can send you 2 jpg's at 1200 dpi of about 6.5 MB each. Enlargeable until you have the screen almost filled with one component number. When you reply via Private I have

One step closer! C1549 looked like it might have been replaced with a mylar cap. As soon as I unsoldered one side and turned on the scope, the fan came on! So i replaced it with a 47mf 25 v

Hi John, Lack of shielding, maybe (RFI from HV circuit)? I think the '575 doesn't have a shield lid in the HV area, but you can try again with the bottom lid in its place. Regards, Sebastian. PS:

How about some pictures

I have a TDS544 at home, which is somewhat similar to the newer TDS784D, and I really dislike the display, menu structure, and general lack of responsiveness. To me this is the point where Tek went

My 575 mod 122C arrived at the weekend. It did basically work when brought up gently on a variac. I've been through most of the valves and replaced a few which were well down on emmision, including

I'm trying to break the habit of buying old scopes. I'm looking for suggestions 100 megahertz or better, 4 channels, supports a mode where multiple pulses are shown over and over again and shows

It's one of those things you may only use once every two years but damn does it make it easy. I have a 1503 as well as a 1502 and I had to find where in my attic the Romex was tapped into. I was able

I picked up a working 1502 a few years ago on that auction site. The batteries were shot, but I found a paper on using a resistor and a big cap to fool it into thinking it had batteries. I think I