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I recently received a pair of HP power supplies from Walter. The shipping, even on these heavy items, was reasonable and less that most E-Bay sellers charge from the USA. There were not any customs

When the COVID restrictions ease, I hope you open a 2nd shop in America. Shipping and customs make it so I don't even bother to look at you site any longer. This is a suggestion and not a complaint

Apologies I meant faster than 200ns. Not 100. The original battery backed chips in my unit were 150. 200 works fine.

Heres the memory replacement I used: https://www.digikey.com/en/products/filter/memory/774?s=N4IgTCBcDaICIGUCMYwAYCCAhEBdAvkA Specifically DS1220AB-200+ but I linked to the search because stock

I’ve done that repair several times. The Dallas chips were available from Digi-Key but I hear some had replaced them with modern SRAM. I opted to use the original DS1220’s from digikey in my

Agreed- I also thought of the VCR97 when I saw that base - in fact I'm going to follow this up and if I can, confirm or otherwise as regards the CRTs used in the first and following several

The naked CRT in the foreground looks very much like a VCR97 to me. That was the CRT developed for WWII airborne radar and navigation applications and it was available at low cost in large quantities

Hi All - I've reviewed the posts here regarding the repair of a Tek 2440 due to dead batteries in the Dallas Semi NVSRAMs. Notwithstanding the great information in those posts, as well as in Hugo

Aren't the CRTs in the 5000-series ceramic neck with a plate glass face? The CRT may well have been replaced after something unfortunate happened to the original one. I'm really jealous about the blue

What the heck! I looked there! Well you have the touch Jeff. eBay likes you better? I'm curious why the scope has the serial number and option windows on the back plate, and the option window isn't

Dave, I see the exact part (Tek P# 311-1120-00, CTS P# 201-YA5531) on eBay for eight bucks (plus $3.68 shipping) which seems a bit steep, but you get two pieces for that price (still a bit steep,

You can use almost any pot that has the same R, and fits in the spot. Nothing special. Ed

I have a 5103N in which the 30v adjust, R858, a 100 ohm 1/4w potentiometer, PN 311-1120-00 has failed. It's innards have rotted and fallen out. The resistance goes infinite as soon as it is turned

That's one reason why you set the grid to the connector finger spacing. Harvey

I would like to second Harvey's recommendation of the manual step and repeat process. I've used this process successfully to make card edge connectors in EasyEDA (the free PCB layout package used by

Eagle doesn't have python scripts, but I can highly recommend using their scripts to generate things like connectors. You get to place everything declaratively, exactly where you need it, with exactly

It's actually less work than you might think.? Creating the connector finger is easy enough.? I don't remember that I had to do too much other than create a single rectangle.? However, aligning

Hi Harvey, I agree that you can do it manually. However, it's very tedious and error prone, whereas a computer would basically shine at that kind of repetitive task. Plus a script can be retargeted,

Hi, I've done some search for "AMP 3-530662-0" and there was already some interest about 7854. /g/TekScopes/topic/7649085 There are 2 modern current production models for the 80 and

Hi Andy, Thanks for your quick answer, I think you're absolutely correct at 3.9 inches. I've double checked the datasheet edge connector (made by EDAC) I'm using for my extender project.