I need to replace the 311-192-00 pot/switch A/B Trigger controls in a 468 due to failed slope switches. Apart from some clear frontal impact issues I've also found failed switches in other scopes. Has

Hi i have a 453 with triggering issues,This 453 seems to trigger fine with an input on cha (ie the call signal),chb wont trigger unless i have a T piece and feed the call input to both bnc's ch a+b,it

The 2x 10mA tunnel diodes in my 547 are dead (D45 & D245). While they were still in circuit, the -150V was perfectly dead on. I replaced R703 and R705 in the power supply that had drifted and were bad

I know. The whole world is looking for covers. Thought I'd ask anyway. -- W0MPM John

Picked up an auction win 7704A today and immediately powered it up only to find it was completely dead. The line fuse was blown, which should have been a 4 A fast blow, but was 3 A slo blow. Do the pl

We have added more Tek knobs and TM500/5000 bits, plus there's an excellent audio power meter, tons of connectors from mil circulars to BNCs, HP 8620C sweeper scales, all kinds of board assemblies, an

Hi all, I have an AWG510 here running Program Version: 1.6B and OS Version: 1.1 I want to update it to the latest version 4.0 downloaded from the Tektronix website but I am having problems. I have suc

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 discove

Tektronix 492AP extenders Now producing Tektronix 492AP Four Board Extender Set Extender board needed to troubleshoot and repair the Tektronix 492AP Spectrum Analyzer. Dupont style 1.50 inch pitch con

Hi all,i am trying to find a manual to repair my 453,its a later fet model not the A verson,can anyone point me where to download it from?,tia.

Hi folks, For 7854 owners who have been suffering from the ROM Rot problem with their EPROMS - I've developed a drop-in replacement for the MCM68766 EPROM that you may find interesting. A short video

If anyone is troubleshooting 7000 series circuit boards, be especially careful when re-inserting the Peltola connector wire. It is very easy to have the protruding wire miss the receiving hole and sho

Stefano, I, too, have a 475A scope. (in fact, 2 of them). Access to the caps is the biggest pain on replacing them. Once I take it apart, I don’t want to ever have to go there again. For that reason,

Hi all,ive just got around to looking at my 453 fet model,its lost its triggering,i want to use the external trigger input on the top r/h bnc,just for diagnosis,what signal is needed,ie level frequenc

The EXT HORIZ function of my Tektronix 453 does not work, and I found some resistors that were way-out of specification. They are: R634 (reads as 550, should be 11K) R644 (reads as 4k, should be 10K w

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

Hi all, I just got the HDD option installed and working in my TDS784C and am now looking for any of the applications that were available. Does anyone have any of the apps that they can send through to

Looking for a TM-500 PS-501 power supply plug-in. Thanks Jose Orgnero VE7LBI

I am looking for part number 354-0269-00 "Ornamental Ring" as it is called in the Tektronix operator/parts manual. it is the filter frame that measures approximately 3.5"x2.5" with a diagonal measurem

I am restoring a Tek 475 that took an impact to the front of the scope. It broke some knobs and I know at least one of the pots is damaged. Part Number 311-1701-00, 20k with a switch that is dpdt. I k