Removing the B+ delay is probably not a good thing. With a large amount of tubes and hybrid circuits often setting up the bias for other tubes or hybrids there is potential for somewhat

I think that Mark said that relay is intermittent, not thermal delay. He said that he taps on relay housing to make it work. It can be a number of causes, I mostly suspect dirt around pivot point of

Well, it is nothing to do with the filter caps and rectifiers. It is to do with getting a long life out of the tubes in the 'scope. As Tek says in "Typical Oscillosope Circuitry" (this is a book all

Hi folks There is a abit of Tek content here, but the general content I thought might be interesting. Some time ago I bought a 10MHz ovenised crystal oscillator. This has about the same specs as the

They've started to show up on ebay... Dead 11801s with mysterious numeric error codes, for example, E5622. Does anyone know how to find out what these mean? Of course the hardware manual is

Yes, lets get back to and continue on with fixing scopes:) I do have an old 531 and a 545 rackmount sitting around that I would like to get into sometime. Don't know if soon though. Still looking at

dcrowe314@... writes: I don't know specifically about this scope, but the literature suggests you can get cathode stripping of the tubes if the B+ is available before the heaters come up

Hi everyone, About 18 months ago, I decided that there was a good business oppurtunity to scan and sell Tektronix manuals on the web. Permission was obtained from Tektronix. Manuals were rented or

group that with list I second that. I am quite happy with this group in general. I'm already a bit sorry that I kicked off this discussion, just because I was a bit annoyed by the reply options. Now

Hi Stan, I respect your work. If you're getting good results that's fine by me. Don Black. Stan & Patricia Griffiths wrote:

I know this is the TekScope reflector, but since I am using Adobe Acrobat to put Tek Catalogs on CD, I would not like anyone to think they will get "fuzzy images" from my CD's. Acrobat incorporates

I've noticed some of the same symptoms on other TAS465 scopes I find, either in person or via ebay photos. So now that mine is completely fixed (crossed fingers), I thought I should relay to the

After lots of great suggestions, I was able to secure an LD110 for the DM44 on my 475A. It was acting up in strange ways. I couldn't say for sure, but it was looking like that part was the culprit.

Hello Michael, I owe you an apology. All my past complaints were based on assumption that this forum is a public property and that you were an appointed moderator. Few members of the forum wrote to

I havent been here a very long time, but seems like this group is going along fine. It is much worse the other way, I belong to another group that moderater is gone from, and now are getting porn

'Michael, it is HIS reflector', what does that mean? Does that mean that this TekScope is Michael's private property and all of us are his guests, some of us quite ungracious? If that is the case, I

Having recently purchased a TEK manual for just under $60, it would be nice to recover some of the expense. Also I figure other folks looking for the same manual to troubleshoot their scope would

Hmmm. Abby Finereader 5.0 home edition was released here as a magazine cover disk a little while ago. it's the best OCR program I've come across. Don Black. John Miles wrote:

HI Don, One has to wait until I get finished with it. I let out a couple of Beta test copies and got some feedback for problems and improvements I have to implement. I will announce it on TekScopes

Hey, in defense of Michael, it is HIS reflector and I will defend, to the maximum, his right to rule it any way he wants. I certainly hope, if I write another book, I don't have to put it to a vote