OK, I think this is now the final input from my side on this topic! I studied the schematic and noted something that I thought odd in comparison to the test schedule F5. I can see that the pot R130

I've just tried this on my 7904A and I also get some readout bounce, but very little. If I position two traces in ALT mode, one at the top and one at the bottom of the screen, so they're only just not

Stephan, I appreciate the suggestion. Yes, they are quite small. So, does anyone out there have one of these very small knobs for the SC-504 that they would be willing to depart with? Merry

These are just stock knobs from RS components. I don't think it would be a particularly good way to fix the SC504, since it has the very small focus knob, and many of the same style on the front

I second the 10x for sharing! Is there any reason some of these knobs could not be machined out of aluminum (or other material); other than non-originality? Would aluminum pose any ESD or shock

Stephen, I want to tell you that I'm glad that you posted the links to your pictures. I accidentally broke the Focus knob on my SC-504 Scope. Are you able to make another one and how much to do

Here you go Phil: https://photos.app.goo.gl/R64amqABAORlL9es2 <https://photos.app.goo.gl/R64amqABAORlL9es2> ST

Hi Tam. How do you convert an analog curve tracer to digital??? Wouldn't it be easier to start from scratch and build a digital curve tracer rather than try to modify an existing analog curve tracer.

Very interesting - will try this today. Soundс good. 10x for sharing! Velik Kazakov

Hi, were you from. If you live in Bulgaria, maybe I can help. Have some 463 for spares and think the fans are the same. Just need to check when have a time. BTW looking in to SM to find the 466 motor

======================================================== When I first heard of the UV cured glue I thought that it would be a good idea. Looking through the internet regarding the process pointed out

Hi Dano, I, too, am a new member, working on my used scope... lots to do. Anyway, welcome and Merry Christmas and Happy New Year! Phil

That's a great method for repairing knobs! -Dave To: TekScopes@groups.io Sent: Tuesday, December 19, 2017 8:13 PM Subject: Re: [TekScopes] Tek Knob Project - scan and make Fundamentally, the

That would be an interesting project.  I have a Type W plugin that has a split white DC balance knob.  IIRC, this is a common problem. I believe there is a similar knob used elsewhere that has the

Hi Dallas, You mean 7L14,not 7A14. I suggest you change the subject line and resend your email to avoid any confusion. You will also get a greater response to a 7L14 subject since the 7A14 is a very

I just wanted to drop a message and say Hello! I'm new to the group. Been trying to sign up for a couple of weeks and was totally confused as why things weren't working. But, I think it had to do

Hey Gene, I believe all the TDS5/6/7XX-series scopes have similar power supplies. The TDS 520B component service manual is available from Tek and around the Interwebs, and it has schematics on the

I've sanded either the plastic or more likely the aluminium to make it close up (don't recall). Worked OK, even for the gears in the 7A13. I used epoxy to stick it all back together and fill any

Dennis, that paper is insane! Wow. Given that I just resumed - albeit at a very slow pace, it's Christmas and the terrible stress some people make about it is extremely bad for my health - work on my

Thanks for the bad news. I was hoping that it would be strong enough to repair the handle on a Fluke DVM. :(