Thanks Raymond. I finally got a chance to try this. It works, but not on version 3.41 of the firmware. I tested on 3.35 and it cleared the logs, but did not clear the power-up count (which would be ki

Hi Raymond, What command clears the logs? Thanks. Jay

Wrong! Final value fees DO get subtracted?? from the shipping costs that a seller charges. Even if you use Ebay to buy and print the label!

I've found that Goo Gone (and how appropriate that name is!) works great on dissolving that gel. Just scrape off the majority with a soft plastic scraper first. Jay

Double-check the TO-39 transistors on the neck board. There's one that usually shorts out, look for discoloration of the can. Later revisions added a heat sink to the device.

There's 4 or 5 TO-39 transistors on the CRT neck board. One of them is prone to shorting and causing that problem. Later revisions had a heatsink on it to keep it cooler. Sometimes it will be discolor

No affiliation. Has a good CRT and powers up. https://www.ebay.com/itm/202324932698? <https://www.ebay.com/itm/202324932698>

Hi Dennis, Those daculators are in all of the later TDS500 TDS600, and all of the TDS700 scopes. 3 per unit. Pictures: https://www.eevblog.com/forum/testgear/conversion-of-500mhz-tds744a-to-1ghz-tds78

You can try this: https://www.tek.com/mytek_support_status David Garrido found this. Works with the TDS scopes. Don't know how far back it goes... Jay

Got a pile of these and most are probably an easy repair. However, the schematic and parts layout in the TDS520B CLIP as well as the TDS544A do not match the later CRT driver boards. I'll pay the firs

What's wrong with that? ;) I use a Fluke 52 in the kitchen and on the grill.

[SNIP] The only thing that's obvious here, is that you don't know what you're talking about, nor how eBay works. Jay

Hi Dennis, I didn't say that there was any shill bidding going on, I was merely stating that the seller is connected with Tektronix. Sorry for the confusion. Jay

That would be Item 162736201019: https://www.ebay.com/itm/162736201019? If true, that would be very interesting as that seller is actually Tektronix! (I've bought from them before)

Hi Dan, Have a look at this thread: https://groups.yahoo.com/neo/groups/TekScopes/conversations/topics/123923 There's also a 27 Ohm fireproof resistor (R176) that may be open. If you end up needing a

Wow! I'd be really curious as to how much that would fetch on eBay! Thanks for sharing that.

Hi Dave, I have some spares without the video trigger board connector, you can have one for the cost of postage. You don't need the video trigger board for the scope to work. Are you in the US? Jay

Yes, I believe that it is Kurt of Tekwiki (and Kurt's manuals)

http://www.ebay.com/itm/Vintage-Tektronix-GR-and-HP-gear-/282488301590?hash=item41c59d6816:g:iLQAAOSw42dZIf6S Not mine... (thankfully!)

The real calibration is stored in 2 serial PROMs located on the acquisition board. Options and SPC constants are stored in the DS1486 chip. Jay