The A5 board: This is a 2465. The EAROM chip in the Buffer (Option) board in my 2465 DMS does take intermittent checksum errors so there seems to be some truth in that rumor.
mnem, those 2 parts are exactly what I need. You still have my snail mail address, right? Isn't great when a fellow TEA'er can help each other with their addiction? Hopefully I can return the favor one day.
The A5 board: This is a 2465. The EAROM chip in the Buffer (Option) board in my 2465 DMS does take intermittent checksum errors so there seems to be some truth in that rumor.
At what point in the operation is that error visible? Power up, after 5mins inactivity which IIRC causes a write to the EAROM, etc?
Our ebay fraudster is back again, this time using the account ahimsaann. Same items listed as last week.If we can spot things like this, why cant Ebay?
Our ebay fraudster is back again, this time using the account ahimsaann. Same items listed as last week.If we can spot things like this, why cant Ebay?
Yet another legitimate ebay seller has been hacked by the fraudster;
https://www.ebay.co.uk/sch/angel_lottie/m.html?item=292560734882&hash=item441dfa8aa2%3Ag%3Aok0AAOSwrf5a9tIC&rt=nc&_trksid=p2046732.m1684
Looking at the completed listings confirms it.
David
I wonder if the other account holders were also away, thus giving this fraudster an opportunity?
mnem, those 2 parts are exactly what I need. You still have my snail mail address, right? Isn't great when a fellow TEA'er can help each other with their addiction? Hopefully I can return the favor one day.
To address your concerns....I have a 2465 DMS and I am VERY familiar with the squirrel cage fan and that colet assembly. I was able to get mine apart without breaking it with lubricant and careful prying. That was 2 years ago when I completely re-capped both supply boards. The fan motor in that scope is a little noisy upon initial power up but quickly quiets down after a few minutes. That Siemens fan motor is unobtanium and stupid complex to rebuild. So as long as it works I'm leaving it alone. The fan in this new 2465 is quiet...so far.
I've had this new 2465 on for several hours and I've also gone thru several power cycles. Absolutely NO issues except for the mentioned sweep cal being slightly off. I would think if there was an intermittent issue I'd see it by now. Later today I'm pulling the covers and give it a good visual check and measure the supply voltages at J119 on the main board. If they are OK I'm NOT pulling the power supply boards.
The A5 board: This is a 2465. The A5 is pin thru hole board with almost NO tants or other caps. Very much unlike the 2465A and 2465B which have the SMT A5 board. Also, the cal data is in an EAROM which doesn't require a backup battery. So no worries here but I understand that those EAROM chips supposedly have a finite read/write cycle and then start crapping out. The EAROM chip in the Buffer (Option) board in my 2465 DMS does take intermittent checksum errors so there seems to be some truth in that rumor.
I'll post some pix later today when I pull it apart.
These 24x5 repair notes are sufficiently useful that we would benefit from them being on some 24x5 repair thread, not merely buried in theses 10,000+ posts!
Thanks.Here's links to a pdf parts list, a pdf dissertation on rebuilding the Tek 24xx DC-DC converter, a page that helped me with links to a lot of other useful info on repairing the 2465, and here is KO4BB's archive of service manuals and resources for the 2465B/2467B. Please don't forget to give back a little via the button; hosting those documents isn't free and you can skip Starbucks or McD's for a day.
I think that stuff has already been posted in the 2465 repair thread.
mnem, those 2 parts are exactly what I need. You still have my snail mail address, right? Isn't great when a fellow TEA'er can help each other with their addiction? Hopefully I can return the favor one day.
Totally agree and I think it goes on a lot, sometimes in the background rather then publicly as well, I know that from personal experience
In between fixing the 465 and this new 2465 I was able to complete the power supply modification to the Fluke 8000A DMM. It now has a regulated 5V supply built up and installed. It's kind of a bodge but it does work and it is secure and safe. Just to the left of the new board are the 7815 and 7915 regulators for the +/- 15V supplies. I've had it on for several hours now and the measurement drift for all practical purposes is gone. All that's left is final check of calibration and it's a wrap.
You can indeed cancel that.
Reused passwords is a good attack vector. There are plenty of databases of leaked passwords out there and the asshats who reuse them tend to not get the point, blame it on the evil hackers and carry on with their passwords.
You should have seen the shit we got when we started testing passwords against known password corpus. Oh you're not allowed "password1". Tough shit!
Usually in the chrome, Firefox and IE saved password usual hangouts
We recently started sending all our users phishing links and send the idiots who click them to re-education camps. I suggested concentration camps but they frowned and said “too soon”
As for physical access, dousing the company plants in roundup solved the physical security problems. Straight in the bin rather than wedging the doors open.
I love that side of the job.
One of the first things they taught us in the forensics class I took a decade ago was "It's always easier to hack the wetware". This means, among other things, DON'T kill yourself trying to decrypt the passwords in the software; scan the computer for the text file where the user keeps his websites & passwords in plain text.
These 24x5 repair notes are sufficiently useful that we would benefit from them being on some 24x5 repair thread, not merely buried in theses 10,000+ posts!
Thanks.Here's links to a pdf parts list, a pdf dissertation on rebuilding the Tek 24xx DC-DC converter, a page that helped me with links to a lot of other useful info on repairing the 2465, and here is KO4BB's archive of service manuals and resources for the 2465B/2467B. Please don't forget to give back a little via the button; hosting those documents isn't free and you can skip Starbucks or McD's for a day.
I think that stuff has already been posted in the 2465 repair thread.
In between fixing the 465 and this new 2465 I was able to complete the power supply modification to the Fluke 8000A DMM. It now has a regulated 5V supply built up and installed. It's kind of a bodge but it does work and it is secure and safe. Just to the left of the new board are the 7815 and 7915 regulators for the +/- 15V supplies. I've had it on for several hours now and the measurement drift for all practical purposes is gone. All that's left is final check of calibration and it's a wrap.
I see you went with a different transformer than the ones I sent; I assume the screw tab was what you needed. I tried to find onein my stuff, but the only thing I had that wasn't already earmarked was this huge thing from a car battery charger.
Hope you can find other use for what I sent; there'll be more on its way soon.
mnem
In other news... *WHUMMMP!!!*
Usually in the chrome, Firefox and IE saved password usual hangouts
We recently started sending all our users phishing links and send the idiots who click them to re-education camps. I suggested concentration camps but they frowned and said “too soon”
As for physical access, dousing the company plants in roundup solved the physical security problems. Straight in the bin rather than wedging the doors open.
I love that side of the job.
You are Simon Travglia, and I claim my £5.
These 24x5 repair notes are sufficiently useful that we would benefit from them being on some 24x5 repair thread, not merely buried in theses 10,000+ posts!
Thanks.Here's links to a pdf parts list, a pdf dissertation on rebuilding the Tek 24xx DC-DC converter, a page that helped me with links to a lot of other useful info on repairing the 2465, and here is KO4BB's archive of service manuals and resources for the 2465B/2467B. Please don't forget to give back a little via the button; hosting those documents isn't free and you can skip Starbucks or McD's for a day.
I think that stuff has already been posted in the 2465 repair thread.
Yep, its there and many others buried in that gigantic thread.
My trials and tribulations in getting the 2465 DMS up and running are buried in that thread too.