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Well, nice introduction and reply. I was reluctant to be specific until I get a reply. From experience and you have just confirmed it - some folks are like my father was - start from Adam and

The kid was on right track for a change. The coupling to the delayed sweep resistor (?) is missing set screw. So it does not operate in known setting. The question remains - is it in the box

Bob, thanks for the 155-0067-02 spec sheet and the Xref resources. They're very informative. Wish I had them 3 weeks ago! Best, John

My ingrained memory of the brand new 7904's, is the snap of the toggle switch, a tic-tic-tic, and then the scope came up. My 7904 has been doing the tic-tic-tic, and then come up routine, on the

I just use a 10mm nut driver. Requires no modifications, and is a perfect fit. If you wanted more challenge: Cut a pair of slots in a 3/8" nut driver... A little more challenge: Drill an 11/32 nut

.....also added a close-up of my Z-Axis board showing Q1152 and what the heating of the transistor and related components has done to the

Here's link to a schematic of the 7603's Z-Axis board from the service manual: /g/TekScopes/photo/46039/1?p=Name,,,20,1,0,0 And an image of the board's component layout:

I had my 2465 burn HV fuses. However it ended up being that I couldn't find any failed transistors, coil was good via a ring tester, so it had to be the CRT - which I happened to have cracked but

Hi : Thanks ! Good information for diode replacement ! RegardTony CheungAPR 27 2018 To: [email protected] Sent: Friday, April 27, 2018 1:07 PM Subject: Re: [TekScopes] New file uploaded to

"I am not sure I understand. C1224 in on the output side of T1201 and is the feed for the Voltage doubler input cap generating -110V ." Yes. When I went to a higher voltage it became quite a load.

Greetings, I may still have some tube data books. If you will provide the tube numbers of interest I will see if I can supply you some data. Regards, Ken

This week I play with one "new" 7904. It come with fired tantalum cap in Control Illum power supply. After exchanging the cap and checking of the ps and main frame all looks ok. But when put new ps in

Greetings, I’ve used an old style HP BNC to Banana adapter for years. It is a fixed relationship between the BNC bayonets and the Banana posts. It also works like a charm, is dirt cheap - and -

I gave away a 547 s/n > 17,000 [email protected]> wrote:

Look in the Tek Cross Reference book? page 12-9 has some info on the 152-0502-00 and lesser information on the 152-0397-00.? The text is searchable.? It may give you a generic

Going back to the mid 60's, I have always used a soldered T connector. Works like a charm, and it is dirt cheap. Gary

Yes, Albert, I went to many hamfests in the DC area (Vienna, Gaithersburg, Manassas, and Berryville) from early 70s to now, and remember the Star Trek Enterprise van real well! In the late 70s I

Hi Robert : It is a very useful information for me to understand the PSU of 7904 ! On the other hand , I am looking for the data sheets for the fast recovery rectifier 152-0502-00 ( MBD5300 ) and

I am not sure I understand. C1224 in on the output side of T1201 and is the feed for the Voltage doubler input? cap generating -110V . what /where is CR 1224?? do you mean D1224? but if the Ac is

I am getting back to a project I've had on the back burner for a long time. About a year ago I left my 453 running in the shop on a very hot day. When I came back a couple of hours later there