开云体育

Matt… Inductors don’t generally self-destruct like that; it takes an over-current situation to get a very low DC resistance to get that hot. Somewhere there may be a capacitor that shorted, and

Hello, Does anyone have a spare 859x case (preferably with handle) they may be willing to part with? I have picked up a "not working, parts or repair" 8591em.? This one doesn't have a case.? It

Well just to reiterate the instrument is fully functional. The only goal was to track down and remove the burn smell. The fact that the instrument continued to work is consistent with the values I

Awesome. Kit is ordered and I have disassembled the ATT from the main chassis.

Matt... From the picture I would guess that the inductor spewed on the cap, which is probably OK based on your measurements, but replacing it can't hurt.

Yes, this video.

Well bad news I am sure the caps fine the inductor smoked and that says something else is bad within the module. I hate to suggest my concern. Good pix by the way instantly understandable. Regards

When trying to locate the source of a side band issue in my 8568, I discovered that several of the colored plastic flips used for lifting the PCB's up from the mb was broken. With time, they seem to

Bonjour: See similar on many old HP LCR meters. Do you live in a very clean air location eg countryside or in a big city? Pollution oxidizes contact. Typical for flaky PCB switch or relay contacts.

I believe I located the source of the burn smell. A11A5 L5 and C9 were both charred (see attached image). C9 is a 2.2u 20V axial tantalum. These form a lowpass filter on the -10 V rail for the YTO

Is it possible that you have a poor "ground" connection somewhere? -- This email has been checked for viruses by AVG. https://www.avg.com

I have one of those, ie the 35660A. Let me check what I have for manuals.

The symptoms your unit shows point in fact to the O-ring problem. The rubber becomes hard and brittle over the time. I had a couple of attenuators showing the same an fixed them all with 2x1x0.5mm

This video? https://www.youtube.com/watch?v=eChxU90OgGk HP RF Attenuators: o-ring repair 'Failed o-rings' means stuck o-rings, that prevent some actuator plungers from moving. Hence wrong

Hi! In my quest to repair my SA, I am now facing a potential failed input attenuator. The dbm readings are within specs as long as I use a multiple of 20 in the attenuator setting. For example,

I tried cold spray and I did clean all of the edge connectors. I also went ahead and refreshed the solder joints on all edge connectors contact points where they are soldered in place. Nothing about

Still looking :) Even the adjustments section is missing!!!

?This unit is old enough that the card edge connectors may not be gold plated, they may be tinned connectors. If so, cleaning and a very thin coating of De-Oxit would be a very good idea on all of

Hi Tom: I expect that a sorting machine, like that shown on my web page: https://prc68.com/I/RASS_PP.html#ALG would be setup to bin the diodes where each bin would be matched to some spec and there

Get a thermal camera. They are dirt cheap nowadays, considering what they can do for you. -- john, KE5FX