Oscilloscope Repair | Electronics Repair And Technology News

Tektronix 2465A SRAM Chip Replacement By Ferro Magnetic Ram A Great Success

Jestine Yong — Fri, 11 Jun 2021 06:20:35 +0000

After some hesitation I today finally decided to start replacing the old 4464 SRAM in my Tektronix 2465A oscilloscope by a special Ferro Magnetic Ram chip type FM1608 from Ramtron. Below photo shows my scope as it was sold on eBay a couple of years ago by David from […]

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Important Maintenance on a Kenwood CS-5130 40MHzOscilloscope with Read-out

Jestine Yong — Wed, 09 Jan 2019 02:04:22 +0000

Preventing having faulty equipment is a very important part of a good engineer’s life, as is the final repair of any device. So maintenance plays an important role. This article is about a very important eprom in the Kenwood CS-5130 40MHz oscilloscope with READ-OUT function. […]

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Tektronix 2465A DV Oscilloscope Siemens Hall-Effect Sensor Controlled Fan Motor Rebuild: Part 1

Jestine Yong — Wed, 02 Jan 2019 03:23:51 +0000

I imagine that most of you have seen my article on the replacement of the memory back-up battery in my Tektronix 2465A DV Oscilloscope. If not, you can click on the link and read it. After I repaired the backlight in my Sanyo TV, I […]

The post Tektronix 2465A DV Oscilloscope Siemens Hall-Effect Sensor Controlled Fan Motor Rebuild: Part 1 first appeared on Electronics Repair And Technology News.

Fungus Attack In Vartech Oscilloscope

Jestine Yong — Mon, 10 Dec 2018 00:40:44 +0000

This Vartech Oscilloscope Model SS-5020B belongs to the writer and it was found in ‘no beam’ condition one day on switch on. As you all know, our tools and instruments are the first priority. So, opened the set and investigated into its cause. It was not having […]

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Amazing Tektronix 2465 Repair Information

Jestine Yong — Sat, 21 Apr 2018 14:44:44 +0000

Today I was helping a friend by checking his electronic car key with my Tektronix 2440 and 2465 oscilloscopes. The car key was fed by two 3V lithium cells but no signals could be measured. The device was completely dead. And after that I […]

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Tektronix 2440 Scope Backup Lithium Replacement

Jestine Yong — Mon, 11 Apr 2016 11:51:07 +0000

Most of Jestine’s Repair Blog Readers probably already read about the completely Short circuiting Tektronix 2440 500MS/s Memory Scope that was successfully repaired not long ago. You can read that article post below: https://www.jestineyong.com/tektronix-2440-oscilloscope-repaired-part-4/ Before this I just recently had bought a Tektronix 2465A 350MHz Scope […]

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January 1st, oscilloscope hangover!

Jestine Yong — Tue, 26 Jan 2016 06:58:30 +0000

The first day of the year, still recovering from the New Year’s Celebrations, I had planned to have a lazy afternoon. On my desk laid a board sent to me by a friend for troubleshooting. I needed to check a few signals and, as this was not […]

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Tektronix 2440 Oscilloscope Repaired- Part 3

Jestine Yong — Wed, 30 Sep 2015 06:56:30 +0000

Here is the part 2 article: https://www.jestineyong.com/tektronix-2440-oscilloscope-repaired-part-2/ Today I started with Calibrating the 500MS/s Tektronix 2440 Memory Oscilloscope. Something that was easier then I first anticipated. Mainly because it is a pleasure to work with this (and probably any other Tektronix Oscilloscope) really fine assembled Device. And the beautifull way […]

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Tektronix 2440 Oscilloscope Repaired- Part 2

Jestine Yong — Wed, 30 Sep 2015 06:53:41 +0000

After my last article on a Tektronix 2440 Oscilloscope Repair was published: https://www.jestineyong.com/tektronix-2440-oscilloscope-repair/ That had a Big Short Circuiting (Low Voltage) Power Supply that blew up the Wall Outlet Main Power Fuse, and its 600V 3A Fast Recovery Diode Bridge plus the Scope Mains input Fuse. I had to […]

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Tektronix 2440 Oscilloscope Repaired

Jestine Yong — Sat, 12 Sep 2015 03:40:49 +0000

My good friend and old colleague Frans brought in today a Dual Channel Tektronix 2440 Oscilloscope that short circuited on the Wall Outlet by also destroying the internal 4A 230V Fuse when the Power Button on the Scope front was pressed. So he asked me to have a […]

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