There has been frequent postings on various repairs for broken 577 CTs. However, mine is working ok, given its age and typical senior citizen arthritis issues. I don’t want to fix what ain’t broken, b

Ok. Thanks all. Confirmed 485 sucks. In at back🤪 Sent from kjo iPhone

Doesn’t that contradict post 1478-2b? Sent from kjo iPhone

Did the TEK factory have the fan suck air in or blow it out the back? kevin

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

Too good to live long.... Kevin, KO3Y

Yes, Bob, I would go for one if you are willing to ship it for me. AZ 86351 KO3Y Kevin

Yea, get one for me! Kevin

Hi Don, “Swapping the U950 from the "good" scope fixed it. “ There may be a lesson here, as I am always hesitant to use a working piece of equipment as a temporary organ donor. I’ve looked at those hy

I stand corrected! There was a time eBay did not charge FVF on shipping domestic, only international. I do mostly free shipping and missed that change. Kevin

@dave Now that is an interesting new tidbit. Never heard of them. K

I have been on this list for a long time. It just dawned on me that there are aspects about it I don’t understand. How can there be a reply to my specific post within the same email digest that my pos

@Jim Potter I should have been clearer. What I meant was that, as a competitor trying to figure out what an item sold for and to price the same or similar item, past fixed price sales are misleading.

FWIW, and more OT, I sell frequently on eBay, but almost never in auction format. I will use BIN with or without offers. When eBay shifted to profit on final value with essentially free listing it mad

Absolutely use epoxy on the connector. Sent from kjo iPhone

The 577 used one of the Tek custom potted SMPS transformers if my memory is correct. Next to a tube failure, that is your biggest worry. I agree with others. Clean, repair power cord, fuse, power, deb

Not that specific component failures on mine will address your issue, but about 17 years ago I replaced these shorted components. (Not all in the same incident) CR1534 killed beam C581 - 22uF killed 9

Had similar problems years ago and the problem was those little tants going short. Rather hazy on the details now, but I remember how infuriating those power supply interlocking systems were. With sup

“Personally I'd replace C911: 22uF 15V tant bead on a 13V PSU rail, diagram 17 (not the PSU diagram!)” Interesting..... It’s been a while, but I think this is the first failure of my 485! Did this rep

I have to agree with Chuck. Most test equipment with imbedded/integrated switchers are going to be very difficult to qualify parts if working. Their functionality can be extremely subtle. Blanket repl