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Thanks for all the helpful replies! I recently post a link, https://www.ebay.com/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw=capacitor+adapter&_sacat=0&LH_TitleDesc=0&_osacat=0&_odkw=capacitor+board

I did. The electrical tape is just to stop it from happening again if it loosens. Sean

I would think that a better way would be to properly align the resistor so that it is away from the chassis. It got bumped. -Chuck Harris [email protected] wrote:

The best way to explain it is probably a picture: https://imgur.com/a/j8vp7B5 / https://imgur.com/9IyoJHE Note that little tab? It was intermittently touching the chassis. This morning I made a neat

Please explain the solution. How does a fan interfere with the switching power supply? -- Gary Robert Bosworth grbosworth@... Tel: 310-317-2247

Paul, I have become quite adept at re-stuffing cans with modern capacitors. I "restuffed" all the filter caps in my TYPE 576 power supply with modern caps. Having previous

Cangratulations!? I like when stuff is easy. Bob

Hi : I have a 485 working after repair , but there are missing parts of fuse-holder p/n :352-0326-00, plastic. Anyone can help ? I am locate in Hong Kong. Regard Tony Cheung Aug 10 2019

Happy ending: the problem was the fan wiring all along. I rearranged it before I inserted the SMPS for the last time, and we have life.

This might work https://www.ebay.com/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw=capacitor+adapter&_sacat=0&LH_TitleDesc=0&_osacat=0&_odkw=capacitor+board

I use to have half a dozen working tdr plugins with mix of pulse gens & samplers in imperial and metric. Long gone on eBay, but do they count?? Kevin, KO3Y Sent from kjo iPhone

It's the fan. If I pull on the power leads that go to the fa, the SMPS will start. Maybe something's rubbed up in there. Have to take a look.

So I had a considerable breakthrough. While I still don't know WHAT is shorting out, I have determined that there is no electrical problem as far as I can tell. It's mechanical. I "fixed" it with my

Yes, I have 7S11 and 7S12 plug-ins and two S-4 sampling heads, S-51 trigger countdown head, S-52 pulse generator head, and two S-53 trigger recognizer heads.? I'm sure others in the group have more

It's a sampling head, not really a plugin, but plugs into a plugin, I guess. I was in such a rush to gloat I used the wrong terminology. I am being punished, the thing is shipping Fedex, I didn't even

Well, if that's your only plug-in, no.I do have the S-42 on my wish list, though.Jim Ford?Sent from my Verizon, Samsung Galaxy smartphone

Most, if not all, of the boards have "harmonica connectors" for the supply input. When I am faced with this, I connect the ohmmeter at the PSU perhaps, and, noting the resistance, remove the

oh yeah. https://www.ebay.ca/itm/Tektronix-S-42-Optical-Sampling-Head/133059541970?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649 I am the king of rare and obscure plugins. Prove me wrong!

Can you rig a little current to flow through a resistance to be Right where the 5V is made, at its SMPS source. or rectifier and caps, (I have not looked at a 7104 schematic today), and relative to a

Input it where? I've been poring over the schematics trying to map out in my head where everything is.