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Mine is a TM504. There's a backplane programming book, and you will need the manual for each plugin to see what the exported signals are.

What album?

Have you tried boosting the filament voltage ? I have had good luck with that in TVs and now did a scope and it came out fine. It is just a matter of either jumping out a resistor or usually adding a

Hi, This is a group, not a forum. Many members (most?) access this group using the email function. With that function, messages are emailed to the member, and display on the member's computer in

I'm finally getting around to fixing, updating and working on my 500 plug in collection. I have a, apparently, rare TM504A chassis that was modified by a previous owner so not all modules work in all

Hello Vaclav, Please see my answers just after your questions: Rgrds, Fabio You're welcome... don't need to apologize. My mistake... I just assumed there could be a picture because your original

Mine has the numbers -0755- hand engraved in the handle so the P/N is 003-0755-00. I added the page from the Tools Catalog to the album. /H?kan

Sorry, perhaps me posting my first one wrong way. Why is there even a need for attachment? I did not indicate that in both of my posts. I think I am capable carrying on a discussion without pictures

Fabio, I have looked at the pins you mention on U2232, particularly at pin 12, C1 which is involved in adding zeros. The behaviour of all the pins is consistent with a logic low of around 0.5V and a

Hi Albert, There are a good few on eBay.co.uk. Most are in Germany which should be handy for you.. Plenty in the States as well. Regards jim Ei2BB

Used to have some many years ago.?Will check just in case any are still in the drawer but pretty sure I sold mine to someone on eBay. www.cwgsy.net/private/mandoline "Error 008472. Horrible bug

A useful site is Frank's Electron tube Pages, http://www.tubedata.org and its mirrors. The 8056 pdf for instance via http://frank.pocnet.net/sheets8.html

Hi John: I have refurbished two 570 scopes and your suggestions are exactly the procedure I followed, but did not document. I replaced all the can electrolytic caps with modern high voltage tubular

Hello John Both you and your friend are lucky guys to have got hold of a 570 each! They are rare as hen's teeth. Only one comment. Silver-bearing solder could be confused with lead-free solder. Best

A friend of mine just purchased an old Tek 570 Vacuum Tube Curve Tracer that hadn't been used in decades. He is a competent technical guy, but wasn't too familiar with old tube scopes. I made up a

"glad to hear the DC/DC converter is working that should be a relief. so why is the Ac-Dc linear causing an issue??" I found out it's not. It's the voltage. "The Chopper xsistor is not too

I popped out the transistor pair in the downstream A trigger view circuit and the voltages didn't change, so that leaves out that circuit as causing problems. So I did like Fabio said and pulled out

I think this one is 6CW4 , if interested where do I mail it?

I would like someone to help me to figure out why my trusty 464 won't keep the sweep going. I do have shop manual. The scope been sitting on my desk , unused for over two years. As far as I can

That's the same one from the ebay link - same vendor and manufacturer too. Vince. -- Michigan VHF Corp. http://www.nobucks.net/ http://www.CDupe.com/