Date   
Re: 2246 locked up

sidthepop@...
 

Starting to get despondant with it now, I can find no info regarding this processor board.
If any body has an details or links to details I would appreciate it.
I'm pretty sure it is something stupid dragging it down and causing faults.

http://i49.photobucket.com/albums/f254/sidspop/20160128_201103%201632%20x%20918_zpszhrostpu.jpg http://i49.photobucket.com/albums/f254/sidspop/20160128_201103%201632%20x%20918_zpszhrostpu.jpg

http://i49.photobucket.com/albums/f254/sidspop/20160128_201018%201632%20x%20918_zpshg7x4uxt.jpg http://i49.photobucket.com/albums/f254/sidspop/20160128_201018%201632%20x%20918_zpshg7x4uxt.jpg

http://i49.photobucket.com/albums/f254/sidspop/20160128_201121%20600%20x%20337_zpsvafqi0ew.jpg http://i49.photobucket.com/albums/f254/sidspop/20160128_201121%20600%20x%20337_zpsvafqi0ew.jpg

http://i49.photobucket.com/albums/f254/sidspop/20160128_2010181_zps7pm8j2gf.jpg http://i49.photobucket.com/albums/f254/sidspop/20160128_2010181_zps7pm8j2gf.jpg

http://i49.photobucket.com/albums/f254/sidspop/20160128_2010181_zps7pm8j2gf.jpg

http://i49.photobucket.com/albums/f254/sidspop/201... http://i49.photobucket.com/albums/f254/sidspop/20160128_2010181_zps7pm8j2gf.jpg


View on i49.photobucket.com http://i49.photobucket.com/albums/f254/sidspop/20160128_2010181_zps7pm8j2gf.jpg
Preview by Yahoo






http://i49.photobucket.com/albums/f254/sidspop/20160128_201121%20600%20x%20337_zpsvafqi0ew.jpg

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Preview by Yahoo

Re: recapping 465 scopes

Dave Daniel
 

I was thinking along the same lines, but from a slightly different point of view.

If one connects a good cap across a bad cap which has a higher ESR, then the two ESRs are in parallel, which means that the total ESR will be worse, not better, than the "bad" cap alone. And, actually, the same goes for ESL, although that might not matter as much (in fact, I guess that might actually be better depending on the circuit)..

DaveD

On 1/28/2016 12:06 PM, 'Tom Miller' tmiller11147@... [TekScopes] wrote:
I agree with Brad. I could not get to sleep knowing one of my scopes had a
bad capacitor just sitting there.

Regards


----- Original Message -----
From: "Brad Thompson brad.thompson@... [TekScopes]"
<TekScopes@...>
To: <TekScopes@...>
Sent: Thursday, January 28, 2016 1:59 PM
Subject: Re: [TekScopes] recapping 465 scopes



On 1/28/2016 11:09 AM, jerry massengale @jmassen418 [TekScopes]
wrote:
Hi,

I just fired up a 465 scope that was working fine 5 years ago but has
been in an unheated shed for that long. It works fair but i see hints
of ripple problems in the trace and operation. I have reworked 465
caps in the past but am wondering if I can get by with connecting
modern caps to the bottoms of old twist lock cans.
Hello, Jerry--

In an emergency situation, you can probably "get by" using caps
tack-soldered to the Twist-lok cans' tabs. However,
if a can cap short-circuits or becomes extremely leaky, the new caps
won't help protect other circuits nor overcome
effects of high leakage.

You're likely better off removing and replacing the failing caps.

73--

Brad AA1IP


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Yahoo Groups Links



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Yahoo Groups Links


Re: Bent vacuum tube pins

Merchison Burke
 

Barry,

I agree with you. I appreciate the links that I can just click on and "BAM", I'm there. No farting around with copy, find the eBay web site and paste the number in the search window.

On 2016-Jan-28 2:18 PM, Barry n4buq@... [TekScopes] wrote:
Something like the following will at least allow a lot of email readers to go directly to the item (saves a few clicks...).

http://www.ebay.com/itm/121867937333

Regards,
Barry - N4BUQ


BTW, there is no need to post a long URL to point to an eBay item - the item
number alone will do.

Dale H. Cook, GR / HP Collector, Roanoke/Lynchburg, VA
http://plymouthcolony.net/starcity/radios/index.html

------------------------------------
Posted by: Barry <n4buq@...>
------------------------------------


------------------------------------

Yahoo Groups Links



Re: Bent vacuum tube pins

Tom Brown
 

I have always straightened the pins with a smooth jawed pair of needle nose pliers. Never had a problem with that....

Tom
AE5I

Re: Way OT: Undoing ransomware damage

Richard R. Pope
 

Hello all,
I have been following this thread to a certain extent and I have to
ask: How many out there running a physical firewall between their modem
and the computer and or computers on their LAN?
Thanks,
rich!

On 1/28/2016 2:47 PM, edbreya@... [TekScopes] wrote:

Thanks all. I guess I'm out of luck. The only payback I have in mind
for these people would have to be done in person.

Ed



Re: Way OT: Undoing ransomware damage

Brad Thompson <brad.thompson@...>
 

On 1/28/2016 3:47 PM, edbreya@... [TekScopes] wrote:

Thanks all. I guess I'm out of luck. The only payback I have in mind for these people would have to be done in person.

Ed
Hello--
By coincidence, I just finished hanging up on an unsolicited "computer service call". If anyone is unfamiliar with
this scheme, go here:

http://www.consumer.ftc.gov/articles/0346-tech-support-scams

Also, beware of flashing onscreen "warning messages" urging you to "click here to repair the damage".

Be careful out there.

73--

Brad AA1IP

Re: Way OT: Undoing ransomware damage

Ed Breya
 

Thanks all. I guess I'm out of luck. The only payback I have in mind for these people would have to be done in person.

Ed

Re: Way OT: Undoing ransomware damage

Paul Amaranth
 

The short answer is you're out of luck. Once the files are encrypted, you
either pay for the key or throw them away. If you do pay for the key,
immediately backup your files after decrypting them then wipe and
rebuild the system. Hope they didn't leave a backdoor in the stuff
you backed up.

The ONLY safeguard for ransomware is a disconnected backup. If you
just backup to a network share, the ransomware will encrypt that too.

For some of my clients I use PCbackup which uses rsync to pull files to
a linux server. It's not normally visible from the windows box so the
backed up files cannot be encrypted by ransomware. Encrypted files
will get backed up too, of course, but you can always revert to
earlier versions. It's not a big deal to keep years of versions on a
TB drive and just go back to before the infection.

It's possible that early on they used very poor cryptography, but that
is no longer the case. Even police departments have been paying ransom.

Heck, now you can even get "ransomware as a service". This is only
going to get worse; it won't get better.

On Thu, Jan 28, 2016 at 12:15:28PM -0800, edbreya@... [TekScopes] wrote:
I'm rebuilding some of my PCs lately, including a nice old Dell one, that has been sitting out of commission for about a year. It and another one somehow got infected with one of those @#$#&$*%^^)^&)(&) ransomware viruses, which encrypted most of the files.

I put the system HD in a blank PC and reloaded the OS, etc, and got it working and deleted the damaged files.There was a backup data drive in it that also was messed up. There are hundreds of documents in there like .pdfs of instrument service manuals and parts data sheets (so I guess this is sort of on-topic), that can probably be relocated online and downloaded again, but what a PITA.

I recall that when this first happened, I looked for info about it, and found that there were apparently some websites that one could go to, and upload one of the encrypted files, and they would reverse-engineer it and send a key that should undo the rest. This was supposedly a free public service from some data security companies, but I didn't know enough about it to trust them, worrying that they may be even more of a scam than the original problem, so I just set the machine aside for later.

Now "later" is here, so I started looking into it again, and found old reports from apparently reputable PC-related publications, saying essentially the same thing. Two specific ones were mentioned - FireEye, and Fox-IT, which appear to be security outfits, but when I went to their websites, there was no mention of this at all, like it disappeared altogether. It seems like perhaps they didn't want to bother with it anymore, it didn't work, or it was a scam or fake news. I also noticed various other methods discussed, like using backup or restore files, and "shadow restore," but I don't think any of these apply to my case.

So, I'm wondering if anyone here knows anything about this stuff, and if there is any legitimate outfit providing this capability. I was kind of hoping that by now some government agency would have tracked down and taken out the perps, and yanked the key servers out of their cold dead hands, and have the keys available to the public for undoing the damage. But I guess that didn't happen.

Ed








!DSPAM:56aa7609244638228414591!
--
Paul Amaranth, GCIH | Rochester MI, USA
Aurora Group, Inc. | Security, Systems & Software
paul@... | Unix & Windows

Re: Way OT: Undoing ransomware damage

Peter Gottlieb
 

There have been multiple reports of people and companies paying and not getting their files back. Consider your files lost.


Peter

On Jan 28, 2016, at 3:21 PM, public@... [TekScopes] <TekScopes@...> wrote:

Some older ransomwares could be easily defeated, but most of them are
essentially impossible to defeat when they're done encrypting stuff.
You have to pay to get the data back.

Cheers, Marian


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------------------------------------

Yahoo Groups Links


Re: Way OT: Undoing ransomware damage

Marian B
 

Some older ransomwares could be easily defeated, but most of them are
essentially impossible to defeat when they're done encrypting stuff.
You have to pay to get the data back.

Cheers, Marian

Way OT: Undoing ransomware damage

Ed Breya
 

I'm rebuilding some of my PCs lately, including a nice old Dell one, that has been sitting out of commission for about a year. It and another one somehow got infected with one of those @#$#&$*%^^)^&)(&) ransomware viruses, which encrypted most of the files.

I put the system HD in a blank PC and reloaded the OS, etc, and got it working and deleted the damaged files.There was a backup data drive in it that also was messed up. There are hundreds of documents in there like .pdfs of instrument service manuals and parts data sheets (so I guess this is sort of on-topic), that can probably be relocated online and downloaded again, but what a PITA.

I recall that when this first happened, I looked for info about it, and found that there were apparently some websites that one could go to, and upload one of the encrypted files, and they would reverse-engineer it and send a key that should undo the rest. This was supposedly a free public service from some data security companies, but I didn't know enough about it to trust them, worrying that they may be even more of a scam than the original problem, so I just set the machine aside for later.

Now "later" is here, so I started looking into it again, and found old reports from apparently reputable PC-related publications, saying essentially the same thing. Two specific ones were mentioned - FireEye, and Fox-IT, which appear to be security outfits, but when I went to their websites, there was no mention of this at all, like it disappeared altogether. It seems like perhaps they didn't want to bother with it anymore, it didn't work, or it was a scam or fake news. I also noticed various other methods discussed, like using backup or restore files, and "shadow restore," but I don't think any of these apply to my case.

So, I'm wondering if anyone here knows anything about this stuff, and if there is any legitimate outfit providing this capability. I was kind of hoping that by now some government agency would have tracked down and taken out the perps, and yanked the key servers out of their cold dead hands, and have the keys available to the public for undoing the damage. But I guess that didn't happen.

Ed

Re: Bent vacuum tube pins

n4buq
 

Something like the following will at least allow a lot of email readers to go directly to the item (saves a few clicks...).

http://www.ebay.com/itm/121867937333

Regards,
Barry - N4BUQ

BTW, there is no need to post a long URL to point to an eBay item - the item
number alone will do.

Dale H. Cook, GR / HP Collector, Roanoke/Lynchburg, VA
http://plymouthcolony.net/starcity/radios/index.html

Re: recapping 465 scopes

 

I agree with Brad. I could not get to sleep knowing one of my scopes had a bad capacitor just sitting there.

Regards

----- Original Message -----
From: "Brad Thompson brad.thompson@... [TekScopes]" <TekScopes@...>
To: <TekScopes@...>
Sent: Thursday, January 28, 2016 1:59 PM
Subject: Re: [TekScopes] recapping 465 scopes




On 1/28/2016 11:09 AM, jerry massengale @jmassen418 [TekScopes]
wrote:

Hi,

I just fired up a 465 scope that was working fine 5 years ago but has
been in an unheated shed for that long. It works fair but i see hints
of ripple problems in the trace and operation. I have reworked 465
caps in the past but am wondering if I can get by with connecting
modern caps to the bottoms of old twist lock cans.
Hello, Jerry--

In an emergency situation, you can probably "get by" using caps
tack-soldered to the Twist-lok cans' tabs. However,
if a can cap short-circuits or becomes extremely leaky, the new caps
won't help protect other circuits nor overcome
effects of high leakage.

You're likely better off removing and replacing the failing caps.

73--

Brad AA1IP


------------------------------------

------------------------------------


------------------------------------

Yahoo Groups Links


Re: recapping 465 scopes

Brad Thompson <brad.thompson@...>
 

On 1/28/2016 11:09 AM, jerry massengale @jmassen418 [TekScopes] wrote:

Hi,

I just fired up a 465 scope that was working fine 5 years ago but has been in an unheated shed for that long. It works fair but i see hints of ripple problems in the trace and operation. I have reworked 465 caps in the past but am wondering if I can get by with connecting modern caps to the bottoms of old twist lock cans.
Hello, Jerry--

In an emergency situation, you can probably "get by" using caps tack-soldered to the Twist-lok cans' tabs. However,
if a can cap short-circuits or becomes extremely leaky, the new caps won't help protect other circuits nor overcome
effects of high leakage.

You're likely better off removing and replacing the failing caps.

73--

Brad AA1IP

Re: Anybody have a nice 465(B) 468 or 475(a) to sell?

Paul Amaranth
 

Another reason items will be listed as "not working, parts only" is to
avoid having to deal with buyers who will send it back if it is not
100% perfect. If it is not as described, sellers have to eat the
shipping costs.

I always buy items listed as parts only. More often than not, I end up
with something that is 90-100% functional. And, if not, then I can
have some fun fixing it, or, in the worst case, I have parts. Unless
you are buying something with a CPU in it, faults tend to be fairly
straightforward. Processor based instruments from the 80s and early
90s are a bit more challenging, but still not too bad. The low
level of integration at that time makes it possible to actually track
down problems.

Back on topic a bit, 468s are kind of fun, but they're a terrible
DSO. The storage function isn't good for much beyond audio
signals and the digital section is tons of fun to troubleshoot.
If you don't really need storage, get a 465 variant; they're much
easier to fix. If you do need storage, either look for a
good analog storage scope or get a more recent DSO.

--
Paul Amaranth, GCIH | Rochester MI, USA
Aurora Group, Inc. | Security, Systems & Software
paul@... | Unix & Windows

Re: Bent vacuum tube pins

Torch Fireman
 

On 28/01/2016 8:04 AM, Ken Chalfant kpchalfant@... [TekScopes] wrote:

I also remember 7 and 9 pin riser sockets. They might have been 1/2 to 1 inch tall and could be secured to your tube tester socket
They are called "socket savers". You can still buy them.

Re: Anybody have a nice 465(B) 468 or 475(a) to sell?

Mike Drum
 

I agree completely with what you have stated. This is also my experience on the E place. For a XMAS gift to myself,

I picked up a 4655B, a 454, and an HP 3312A signal generator this past December.

None of the scopes showed a photo of a trace. The signal generator showed no output to a scope.

Reading the description, looking at feedback, examining what photos I could, and using gut instinct produced 3 perfectly

working and excellent cosmetic condition instruments. Other then some controls needing some contact cleaning, I ended

up with 3 instruments I could relist for a profit if I chose to, but these were not acquired to relist. These are for keeps.

If your purchasing anything used, there is always some risk. The sellers that chose to list items with poor photos, bad descriptions,

and little effort don't necessarily have bad products to sell. If you can use some good judgment in selecting a scope there, you can actually

come away with a great instrument for a very attractive price since most buyers will look elsewhere when the listings don't have all

the proof items they are looking for. I'm not saying those buyers are wrong. I'm only saying that it is possible some great products

can be had for little money if the buyer can manage to weed through the listings and use those experience elements to make a selection.



Honestly, I am willing to take the risk because I have more fun fixing the scopes then I do using them. I also enjoy cleaning them up and

Returning them to like new appearance. It’s time consuming, but very rewarding in my opinion.



Mike





From: TekScopes@... [mailto:TekScopes@...]
Sent: Thursday, January 28, 2016 10:39 AM
To: TekScopes@...
Subject: [TekScopes] Re: Anybody have a nice 465(B) 468 or 475(a) to sell?





I’ll make an offside comment here in relation to your curiousness about the Eb auction site listings and descriptions and really knowing the truth about the condition of an item.

First – and probably most, many of the people who sell these items know nothing about what they are listing. “Powers up” and “no further testing” are real giveaways. But these can also be interpreted as the seller is either too busy, too lazy or simply wants push the item to get their money.

Second, the seller has something to hide about a possible defect in the item. I have found this out on a few instances. You can often do a little detective work by simply sending a question to them about your concern. Sometimes they have simply overlooked an obvious action and are willing to help you with the answer. Other times if they are not knowledgeable about the item, you can give them brief procedural instructions as to how to perform a test, etc. in order to get the information that you require. Some will even go to the extra effort to send you detailed photos beyond those shown in their listing.

Having participated in the past in government and local business auctions that were “spot” auctions (you attend the auction at the location in real-time) I found that there are a considerable number of people who are dazzled by the “no matter what it is, get it cheap and sell it to make money” opportunity. I have seen mommies with their little kids present picking up some very esoteric equipment obviously not knowing what they have but are sure that they will reap millions of dollars if they sell it. Then there are the bottom feeders who will buy and sell anything to make their money.

Several years ago, a colleague of mine purchased a piece of test equipment on Eb. Since he lived only a few miles from the seller, he indicated to them that he would pick it up to save shipping costs. When he arrived to get the unit, it was found damaged and incomplete, contrary to what the seller tried to construe in the listing ("minor cosmetic defects, powers up" etc.). The seller refunded his money on the spot. My friend then engaged in a conversation with the seller about where he obtains his inventory of items to sell. The seller rolled up the garage door exposing a plethora of “well used” equipment and said that he simply goes to garage sales, dumpster dives or drives up and down the alleys picking up items (junk) to sell on Eb. And he makes his living doing it.

I don’t want to give the idea that every seller is that way. With over a thousand purchases under my belt (for my own use) on that famous auction site, I have been burned probably 4 or 5 times. But for many listings, it takes careful reading and reading between the lines these days to understand the psychology of the seller you are buying from. As of late, the oft found phrase of “I don’t know what it is and don’t know how to test it” has been shortened to “I don’t know how to test it” probably because the seller is trying to instill a better feeling of trust in the buyer when they read the description. On the other hand, there are very reputable sellers that deliver what they promise mainly because they want to retain a sterling image and want to do business with you again.


...and I will never figure out why some sellers can’t publish photos beyond those seen that are totally out of focus or are taken in a completely dark room. I suppose I could go on about that one…






[Non-text portions of this message have been removed]

Re: Bent vacuum tube pins

bonddaleena@...
 

Yeah, but it has that "warm toooby sound".......

ron
N4UE

-----Original Message-----
From: Dwayne Verhey tekscopes@... [TekScopes] <TekScopes@...>
To: TekScopes <TekScopes@...>
Sent: Wed, Jan 27, 2016 9:32 pm
Subject: Re: [TekScopes] Bent vacuum tube pins






He's mighty darn proud of it. 'For $75 I'll stick with the ones built
into my tube tester.

On 27/01/2016 8:58 PM, snapdiode@... [TekScopes] wrote:

I've been playing with tubes for .. decades now, I have never seen or
heard of one of these


NOS GC Electronics 7 & 9 pins tube straightener for 12AX7 6DJ8 EF86
vacuum tubes
http://www.ebay.com/itm/NOS-GC-Electronics-7-9-pins-tube-straightener-for-12AX7-6DJ8-EF86-vacuum-tubes-/181991402482?hash=item2a5f886bf2:g:pVYAAOSwFqJWkGqZ








[Non-text portions of this message have been removed]

Re: Protected PDF's

Mark Wendt
 

On Thu, 28 Jan 2016, Artek Manuals manuals@... mailto:manuals@... [TekScopes] wrote:
> On 1/28/2016 1:26 AM, Tothwolf tothwolf@... mailto:tothwolf@... [TekScopes] wrote:
>> On Wed, 27 Jan 2016, Artek Manuals manuals@... mailto:manuals@... [TekScopes] wrote:
>>> On 1/27/2016 8:04 PM, Tom Gardner tggzzz@... mailto:tggzzz@... [TekScopes] wrote:
>>>>
>>>> Linux, Firefox, Okular: fail
>>>> Linux, Firefox, Evince: fail
>>>> Linux, Firefox, gv: opens but almost illegible
>>>> Linux, Firefox, epdfview: fail
>>>> Linux, Chrome: OK
>>>
>>> And your point is?
>>
>> Don't assume everyone uses Windows and Adobe Acrobat Reader 9+.
>
> I dont ...I assume that 95% of the user base uses Win-7 and Adobe ...the
> Linux crowd usually figures out a work around anyway ...that is the
> nature of Linux and half the fun

>Don't assume Linux when you see a command prompt.

True. Could even be Unix or VMS. ;-)

Re: Anybody have a nice 465(B) 468 or 475(a) to sell?

 

The 465 & 475 are not storage scopes
 HankC, Boston WA1HOS

[Non-text portions of this message have been removed]