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Hi Windsor, Option 78 for the R7903 is a P11 CRT phosphor. I think that's all there is to it. Stan w7ni@... mongteen@... wrote:

Don Black wrote: Where can you buy the book? I did not see any information about where on the website. Best Regards, Mark Gurries Power Supply Applications

Hello Jose, I am glad you found the bad cap. I am sure I have an exact replacement for the 125uf cap you need. How can I send it to you? Stan w7ni@... JOSE V. GAVILA (EB5AGV/EC5AAU)

August 23, 2001 I have just bought a 2336YA on eBay w/o manual etc. Can someone suggest a quick way to get the basic operating instructions? Alternatively (and anticipating need to calibrate

Hello, What is option 78 for the r7903? I checked the reference section on reprise and the jug 154-0644-09 goes into a r7903 with opt 78 and nothing else. Is it a special jug? For example higher

Hello again, First, forgive me for my dumbness; I forgot to upload the last picture!. I have done it, along some other pictures... as the oscilloscope is now WORKING!!!. Not at 100%, but lots better

Would anyone have an extra 1L10 Spectrum Analyzer Plug-In they would like to sell. I have a collector friend looking for one. Jim Reese

Hello! First than anything else, thanks to everybody who has suggested ways to deal with this repair. But saga continues... What seemed to be a simple trouble (power supply ripple) is still

Peter, I would appreciate your effort on this one. I have searched the world (online) to find out what it looks like. I don't know if you are aware or not, but the tube for the 2213A and the 2215A

If my 2235M plate will fit on my scanner, I'll be happy to do it. It's still off as I'm still trying to get a tube for it. Let me know if you still need it. Peter Florance Audio Services 544 Central

Hi all, I have a 2235 and a 2215. I purchased two accessory pouches that (unknown to me when I ordered them) came without the "plate" that attaches them to the scope. If someone has one of these

Comments below: JOSE V. GAVILA (EB5AGV/EC5AAU) wrote: Yes, I think you are on the right track. There are TWO electrolytics to check here: C679C and CC730. Did you check them both?

From my recollection of working on the tube B+ supplies many years ago, another possible cause is an open or leaky decoupling capacitor on the grid of the comparator tubes (6AU6). Check to see if your

Do you have another 'scope so you can see the waveshape of the ripple? Actually, the 6080 is the regulator pass element -- it's a low-mu dual triode. Have you checked the sense resistors? That's

Hello! After another small trip (why do women _love_ to travel so much???), I am again at home. And, just today, I have got an original 545B manual in the mail. Sometimes, eBay is great; I got it for

Hi Urs, There is a man in Florida who rewinds some Tek HV transformers. I don't know if he has ever rewound one for a 536 or not. Bill Schell, AA4AY 10102 Winder Trail Orlando, FL 32817 USA I

Surely there must exist a reasonable sub today. Have you looked into the various suppliers (mostly far east these days)? If you don't have catalogs, get me the specs (I might have them somewhere

I haven't taken apart a Tek power transformer yet so I don't know how the windings are arranged or if potting is used. But IF the HV windings are on the outside (which is fairly typical), you might

To all The HT-transformer T801 of my Tek 536 is broken down. It seems that there is a short between two turns of a winding. As the scope is otherwise in a fairly good condition, I would like to

Hi Mike, Have you tried Deane Kidd <dektyr@...> for a replacement YIG? Another place to try is <www.sphere.bc.ca> Stan w7ni@... Mike McCauley wrote: