I am selling my 7613 oscilloscope in hope to aquire more funds to purchase other test equipment.
Link:
https://www.ebay.com/itm/166586341223?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=CTI57OxBQDq&sssrc=4429486&ssuid=CTI57OxBQDq&var=&widget_ver=artemis&media=COPY[Begin_eby_desc]
What this is:
This is a Tektronix 7613 Analog Oscilloscope. It is a part of the 7000 series family of "mainframes". These are modular scope accepting a wide variety of 7000 series plug-ins. This particular model, the 7613, has a bandwidth of 100MHz. It offers two vertical plug-in bays, and one horizontal plug-in. With two 7A26s or relative equivalent plug-ins, it can achieve the full 100MHz bandwidth with 4 analog channels.
The special part about this scope is that it's an analog storage scope. As seen in the first image, with nothing connected, it still has a sine wave saved on the screen.
What you'll get:
You will receive a Tektronix 7613, one single 7B53A 100MHz timebase plug-in (see important notes about this plug in).
You will not receive the 7A26 plug-in shown in the photos. Unless you offer $10 more. That was for demonstration purposes.
Condition:
The Tektronix 7613 Oscilloscope Mainframe itself is fully functional. It is missing the plastic around the intensity knobs, and the bezel for the screen, but fully functional.
The -15v supply tends to drop out sometimes, but this is simply a mechanical issue. Q956 isn't super well secured into it's socket, so you may have to bang the back of the scope a few times to get it to work. The reason for this is because the pins of this transistor are thinner than normal.Issue resolved
I had replaced Q956 in an earlier repair. The transistor is non-original.
The capacitors are old in this unit. Two have already failed by having a much lower capacitance than rated. I rectified this issue by adding new caps in parallel with most of the low voltage rails to compensate for the lost capacitance. The high voltage rail however (+130v), I replaced the capacitor with a good one. No bodging capacitors there.
Buying:
For now, this unit is for local pickup only. If I were to ship this beast, some delivery worker is likely to drop it and severely damage it. Plus its going to cost a fortune to ship anyways.Since it's a
local pick up only, you are more than welcome to haul along some of your own test equipment to test it before finalizing the sale if you'd like. Shipping added on ebay
Important Notes:
The 7B53A timebase plug-in is now working. I have repaired the damaged cam system:
https://www.eevblog.com/forum/repair/tektronix-camshaft-repair-guide/ Keep in mind though that my repair may fail in the future, be gentle with it.
The timebase triggering fixed
Everything with the plug-in works quite well.
Remember that these are all problems with ONLY the plug-in. The actual mainframe is just fine.
Questions?:
If you still have questions, you can visit a wiki site about these scopes.
https://w140.com/tekwiki/wiki/7613If the website does not have the desired information you are looking for, feel free to contact me. I know this scope quite well so I will be very likely be able to answer your question
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This is located in Sacramento CA, USA.
I'm open to trades as well.