There is generally some swelling of the can on top where he vent is located.
However, I agree with all who say, replace them now all at once and be done
with it.
Gary
> On Nov 15, 2015, at 12:50 PM, Kim Elmore <cw_de_n5op@sbcglobal.net> wrote:
>
> Is there a way to look at the capacitors on the power board and know if I
> they are suspect? Or should I simply bite the bullet and buy the capacitors
> specified in the Wiki (for the Orion II) and plan to spend an afternoon doing
> the job?
>
> Kim N5OP
>
> On 11/14/2015 11:23 AM, Gary J FollettDukes HiFi wrote:
>> I think the reason Ten Tec its so adamant about having people routinely do
>> the capacitor change is that, when the suspect capacitors fail, it us
>> usually without warning and can be quite dramatic, causing irreversible
>> damage to PC boards. Also, likely inhaling the results of the vaporization
>> of the chemicals in the capacitors is not in one’s best interests either.
>> Therefore, to avoid possible liability issues, Ten Tec has chosen the path
>> of strongly encouraging this upgrade even if the radio is working fine.
>>
>> In reality, I agree with them on their approach, though I wish they would be
>> forthcoming as to the reason and admit that they too went with “the lowest
>> bidder” on these capacitors. That openness would probably encourage more
>> people to do the work as a preventative measure instead of waiting for the
>> inevitable failures to take place.
>>
>> Going forward, every Orion I pass through my buying and selling business
>> will get this upgrade before leaving my hands, just for the added safety
>> level it offers for my buyers.
>>
>>
>> Gary
>>
>>
>>
>>
>>> On Nov 14, 2015, at 7:56 AM, Kim Elmore <cw_de_n5op@sbcglobal.net> wrote:
>>>
>>> What a fascinating article on those capacitors! I've seen those failures on
>>> computer motherbaords. My O II was purchased June 2007 and hasn't yet shown
>>> any signs of capacitor problems. I wonder if it will bite me like it has so
>>> many others? It was sent to TT service for transmit power output issues in
>>> 2013 and they replaced the battery as a matter of course, so I should be
>>> good for a while yet on that. So far, it's been a wonderful rig!
>>>
>>> Kim N5OP
>>>
>>> On 11/13/2015 9:25 AM, Gary J FollettDukes HiFi wrote:
>>>> I have considerable background in Aluminum processing as well as in the
>>>> analytical methods used by the researchers in the Woki article surrounding
>>>> the electrolytic plague.
>>>>
>>>> I must admit that I was very impressed by the Wiki article in terms of its
>>>> detail and depth. Anyone who wants to understand electrolytic capacitors
>>>> and why they do what they do should read this.
>>>>
>>>> Thank you for the reference. I learned a lot from it.
>>>>
>>>> Gary
>>>>
>>>>
>>>>
>>>>
>>>>> On Nov 13, 2015, at 8:37 AM, Duane Calvin <ac5aa1@gmail.com> wrote:
>>>>>
>>>>> Thanks for the reminder, Ron. I notice the Wiki article is not complete.
>>>>> It leaves out the news story that came out a while after the plague began
>>>>> that told of how someone had infiltrated the premiere electrolytic maker
>>>>> in
>>>>> Taiwan and stole the recipe for the "secret sauce" inside. Problem was,
>>>>> the
>>>>> company had hid away the real recipe, and had left a phony copy where it
>>>>> could be stolen in order to foil competitors. And, sadly, that is how we
>>>>> have been cursed with the bad capacitors for lo these many years! Here's
>>>>> one of the online references with a slightly different twist, but it's
>>>>> close:
>>>>> http://www.pctools.com/security-news/faulty-capacitors/
>>>>>
>>>>> And that's our intrigue for a Friday morning, the 13th!
>>>>>
>>>>> 73, Duane
>>>>>
>>>>> Duane Calvin, AC5AA
>>>>> Austin, Texas
>>>>> ac5aa@ac5aa.com
>>>>>
>>>>>
>>>>> -----Original Message-----
>>>>> From: TenTec [mailto:tentec-bounces@contesting.com] On Behalf Of Ron
>>>>> Castro
>>>>> Sent: Thursday, November 12, 2015 11:10 PM
>>>>> To: 'Discussion of Ten-Tec Equipment'
>>>>> Subject: Re: [TenTec] Bad Capacitors (WAS: Orion II master resetting each
>>>>> turn on)
>>>>>
>>>>> The bad capacitors were produced from around 1999 to 2003, but the effects
>>>>> lasted for several years afterward. Dell got burned for some $420
>>>>> Million,
>>>>> also Apple, HP, Intel, IBM and others got hit for huge sums. Here's the
>>>>> sad
>>>>> story from Wikipedia:
>>>>>
>>>>> https://en.wikipedia.org/wiki/Capacitor_plague
>>>>>
>>>>> At the end is the speculation about the stolen formula, which is
>>>>> intriguing
>>>>> to say the least! This hit Ten Tec as well, and even if you sent your
>>>>> radio
>>>>> back to them, they replaced the caps with ones from the same bad batch
>>>>> before all of this was known.
>>>>>
>>>>> Ron Castro
>>>>> N6IE
>>>>> www.N6IE.com
>>>>>
>>>>> Member:
>>>>> ARRL
>>>>> Redwood Empire DX Assn.
>>>>> Northern California Contest Club
>>>>> Northern California DX Foundation
>>>>> Society of Broadcast Engineers
>>>>>
>>>>>
>>>>>
>>>>> -----Original Message-----
>>>>> From: TenTec [mailto:tentec-bounces@contesting.com] On Behalf Of Duane
>>>>> Calvin
>>>>> Sent: November 12, 2015 8:33 PM
>>>>> To: 'Discussion of Ten-Tec Equipment'
>>>>> Subject: Re: [TenTec] Orion II master resetting each turn on
>>>>>
>>>>> For some period of time a few years back, EVERYONE had problems with
>>>>> electrolytics due to a stolen fake formula for the electrolytic compound
>>>>> in
>>>>> the caps. Sure caused a lot of problems. I had to repair my Samsung
>>>>> big-screen TV by replacing electrolytics on the power supply board, for
>>>>> example. I used to know the years this occurred, but no room in my memory
>>>>> for that any more!
>>>>>
>>>>> 73, Duane
>>>>>
>>>>> Duane Calvin, AC5AA
>>>>> Austin, Texas
>>>>> ac5aa@ac5aa.com
>>>>>
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> TenTec mailing list
>>>>> TenTec@contesting.com
>>>>> http://lists.contesting.com/mailman/listinfo/tentec
>>>>>
>>>>> _______________________________________________
>>>>> TenTec mailing list
>>>>> TenTec@contesting.com
>>>>> http://lists.contesting.com/mailman/listinfo/tentec
>>>> _______________________________________________
>>>> TenTec mailing list
>>>> TenTec@contesting.com
>>>> http://lists.contesting.com/mailman/listinfo/tentec
>>>>
>>> --
>>>
>>> Kim Elmore, Ph.D. (Adj. Assoc. Prof., OU School of Meteorology, CCM, PP
>>> SEL/MEL/Glider, N5OP, 2nd Class Radiotelegraph, GROL)
>>>
>>> /"In theory there is no difference between theory and practice. But, in
>>> practice, there is." //– Attributed to many people; it’s so true that it
>>> doesn’t matter who said it./
>>>
>>> _______________________________________________
>>> TenTec mailing list
>>> TenTec@contesting.com
>>> http://lists.contesting.com/mailman/listinfo/tentec
>> _______________________________________________
>> TenTec mailing list
>> TenTec@contesting.com
>> http://lists.contesting.com/mailman/listinfo/tentec
>>
>
> --
>
> Kim Elmore, Ph.D. (Adj. Assoc. Prof., OU School of Meteorology, CCM, PP
> SEL/MEL/Glider, N5OP, 2nd Class Radiotelegraph, GROL)
>
> /"In theory there is no difference between theory and practice. But, in
> practice, there is." //– Attributed to many people; it’s so true that it
> doesn’t matter who said it./
>
> _______________________________________________
> TenTec mailing list
> TenTec@contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
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