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Try the CRT grid bias adjustment. One clue that it's wrong is if a beam doesn't appear when the intensity control is full counterclockwise (or should I say "anticlockwise"?) and the Beam Finder button

The vintageTek museum has been most helpful. They have the pot and some knobs I am needed. Thank you very much for the reference to them.

I need a Vertical Switch circuit board for a 7104 oscilloscope. Please let me know if you have a scrap one laying around that you would like to sell. Gary

Many thanks Bob; I did already discover that my other Storage board had an absent W250 jumper so I took the initiative to disconnect the one on the board I'm actually using. It worked as it should so

Jose, we have several PS501, some with the meters, all works fine. Open to your offer, we seek any TM500 plugins for swap or TEK 7000 plug-ins Unis location in USA Please contact with PM or emails

Hi Jose, Makes perfect sense. I have both models, and use both for different reasons. Having a built-in meter is definitely handy. The 503 has an LED whose brightness tracks output voltage, but unless

Hello Bob Thank you for the reply and certainly you make sense. But the odd reason for wanting the PS-501 is to have a unit that I can move around in a single rack without depending on an outtside

Why do you want a PS-501 as opposed to a PS503 or PS503A? Except for the built-in meter, the PS503 is superior, having dual +/- 20 volt supplies with tracking capability. The PS503A can supply 1A on

Thanks for the quick responses guys~!~ I checked with Artek earlier, he said the highest referenced serial number is B103xxx and mine is a bit higher, maybe not too high but higher. I’m going to

There are two versions of the vertical preamp board. The older one has dual pots for vertical position, the new, single-section pots. I've uploaded this picture:

I ordered mine and it was delivered a couple of days ago. I am very happy with it. As a Tektronix enthusiast, it is a pleasure to just see this lit up in my shop. I consider this an "accessory" to my

Elsewhere I have recently discussed my 468 repair project. I now have an analog scope working pretty much correctly. However the digital store function seemed to have problems of no display. I

Your basic part number for the manual is correct, but you need a later version. The 5A48 did go through several modifications over its lifecycle. And the commonly-found manuals on the internet are

This topic is now on moderation - Templeton's posts have been deleted. David (moderator)

"Mak[ing] replacement or custom acrylic graticule inserts for various tek scopes" has value to Tek owners. Your further point about 'all money in your pocket' remains false by inspection. Again you

Michael as far as I have seen the technical manuals follow the pattern 070-XXXX- 00/01/02.... But I do have one model early unit that does not match the early manual. Jeff -- Jeffeelcr

I did find one with an SPST switch in stock at Digikey for $9.64 plus shipping. Somewhat surprisingly to me, they have 757 in stock. Mouser is out of stock and quoting 23 weeks lead time! Since my

I need a 311-340 pot (50 ohm with DPST switch) to fix the graticule lights on my 564. It's open, and won't come apart ("hot-molded" case). 25-30 years ago I would call Deane Kidd. RIP. I'll message

Evening folks, I've got a 5440 on the bench equipped with a 5B42 and a pair of 5A48 modules. I soon discovered that the pair of 5A48 modules is a different flavor from the common manuals circulating

False. False. Did you read the post? I would like to thank John for his work and I am discussing an order with him now. EJP