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I stopped looking when I found a spider husk in the lower left, near second row from bottom of front panel knobs/pots. probably two of 'em. -- John

Look 210mm from the front panel and 91mm from the base. I think it may have been trying to calibrate some function..

I think it's sitting on a green-ish pot(?) just to the center/right of the picture. Thanks, Barry - N4BUQ

Where is it located ? 73, Dick, W1KSZ ________________________________ Sent: Sunday, June 28, 2020 10:41 PM To: [email protected] <[email protected]> Subject: [TekScopes] What's the Tektronix part

https://photos.app.goo.gl/8esDSfBZB6YwKGjQ9 Hello to the group, Any suggestions what could be causing this sort of blur which is modulated by the signal? It's strange fog. When I had this Telequipment

For Tek probe questions I refer all to Tekprobes group. Some very savvy probe folks there…. Steve Lindberg Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10

Hi leo Thanks once again for guiding me through repair process. Regarding the voltage issue you are right that my power supply has poor regulation. As you suggested I will try my best to replace those

They are more likely to explode when fed 230 V ~, and that is often what comes with 50 Hz (I know, not in east Japan, Jamaica, Cura?ao, Bonaire, Barbados, and a few parts of other countries). If they

Hello Saroj, this is a good start! You confirmed your scope has the typical issue, it's almost always the primary power supply with problems. The Power Supply are basically TWO switching inverters

Hi Tom, Sorry, yes you're correct, that'll teach me for posting late at night! Unfortunately, I don't have access to an ESR meter, however the need for one arises often these days so perhaps it's time

That spider is definitely screwed :-) Rick

Can you see it? http://w140.com/tekwiki/images/1/10/1s1_left.jpg I thought it was funny.

https://lmgtfy.com/?q=tekwiki&pp=1

Thank you, the RPR catalog was most helpfull! Sendt fra min iPhone

Hi, Roy. I'd be interested in your diatribe on variable autotransformers. I have a Staco model 500B autotransformer that I rescued from the trash at work (Raytheon). Yes, it can go up to 140 VAC on

Rick, Here you go. 120-0117-00 is a Power Transformer for a 310A The RPR catalogs are available at TEKWiki. Follow this link: https://w140.com/tekwiki/wiki/Main_Page then type "RPR" in the SEARCH box.

I'm after a late R7603 and am in no hurry. I want one with a fan. I'm about to buy some service info so will be better able to spec what I think I want. How. ever. there must be 50 people here who

Hi Max, I guess you mean A10, the main board. At least on my schematic. Anyway, do you have access to an ESR meter? That would be a little easier than a shotgun approach. But here are the caps to look

REALLY??? You should know better! The next time, before you ask 8,000 members from TekScopes for the answer to this trivial question, first try going to google. Type one word in the search field

Hi Leo I made myself a old style transformer type power supply to connect to the inverter section. Here are my findings. 1. Un loaded external power supply out put voltage---44v 2. Loaded external