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Just what I was looking for; many thanks.

But old hand at other electronics repair? Excellent - for the most part you don't need a whole lot'o'scope to diagnose another scope. The power supply ripple is typically measured under the 20MHz

Greetings, I'm trying to save a couple old plastic knobs that have stripped set screw threads, that don't have brass inserts. I remember reading someplace about a machinable potting material that is

If you feel like doing a lot of work, you can look up the part number and cross-reference it to find what else it is used in. Some Tek parts are common and some are made out of unatatium, hope I

A good start would be to have the controls thus: POWER Off INTEN Fully ccw FOCUS Midrange SCALE ILLUM As desired VERT MODE Ch 1 POSITION Midrange VOLTS/DIV 5V VAR VOLTS/DIV Calibrated detent AC-GND-DC

I have a feeling that it depends on whether or not it is in storage mode at startup. With storage mode turned off, IIRC, any storage scope ought to look "normal". In storage mode, then you'll get a

Thanks, but that link you provided only seems to point to an extremely high resolution scan of the front cover of the manual (69Mb's worth!) unless there's something I'm doing wrong! But no worries, I

Hi Bert No its not the Tunnel Diodes that are faulty its the Trigger driver JFET's have blown, in fact one of them was cracked which I was unable to see until I removed the Heatsink, so I hope someone

I'm really surprised that no one else has mentioned the infamous tunnel diode problem. This often shows up on a lot of the older Tek products and the are many, many previous discussions on this and

This scope is currently on eBay. If it is of any significance, the probes are permanently wired in, according to the description. Colin.

Hi! My tektronix 214,221 and 222 is now working with lithium batteries. /g/TekScopes/photo/66992/1?p=Name,,,20,1,0,0 /g/TekScopes/photo/66992/2?p=Name,,,20,1,0,0

Excellent point, Artekmedia. I'll know soon enough! -Stefan

Well Success at last Fabio !!!!! I did not realize that the FET's were in sockets under the heatsinks, I decided to change them and I still had no Trigger, as they were out I tested the FETt's on my

This should be covered in the service manual: e.g. https://docs.telegraphics.com.au/Tektronix_070-1753-01_466_Storage_Oscilloscope_with_option_Service_Instruction_Manual_Revised_Nov_1982.tif

120-1087-00 transformer or complete HV module for a 7603. Chris

Hi all, I've finally got a mo to look at the 466 I bought sight-unseen a while ago. I'm not really familiar with analog storage scopes, though. I've been given to understand that after switching on

Interesting... Raymond

Also in this day and age it is not sufficient to look at the just the unit serial number. There are so many organ transplant units floating around where a previous? owner swapped an early A5 in a

As Siggi has mentioned, the A5 board (processor control) is a frequent source of failure in these scopes.? But Tektronix went through several design iterations of the A5 board over the years

Good morning John, Yey! Seems like you've made some progress there! A reading of -7.9V on the pins 2,3 of U460 is not normal, if the input is set to EXT and the input jack is grounded... the output of