I've never used that amp myself but know several people who have them and
use them often and I think you're the second one I've ever heard have a
problem with one so it has a good track record.
----- Original Message -----
From: "Steve Forst" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, April 17, 2015 1:03 PM
Subject: Re: Amp parisitic board failure
> Tnx to all who chimed in on this. I guess I was just curious if this
> was just one of those things, or a known issue either with this amp or
> the 3-500z tube.
>
> Spoke to the tech this morning at Ameritron who told me that a cap had
> burned up and a few other parts on the board were bad or suspicious
> as a result, so the board was replaced.
>
> I asked if there were any particular reason for the failure, and he said
> he figured it was just due to age and use. Also said he and his
> supervisor had gone over the amp and found no other faults, or anything
> that could have lead to the failure. I think at Ameritron, a
> supervisor is someone who has been there 6 months. Just kidding, the
> guy was very nice and seemed to know what he was talking about. In
> other words he knew a thousand times more than me.
>
> 73, Steve KW3A
>
>
>
> On 4/16/2015 7:54 PM, Steve Dresser wrote:
>> Steve,
>>
>> Perhaps RF may have gotten loose in the amp and caused a capacitor to
>> partially break down, and the final failure just happened later.
>>
>> Steve
>>
>> ----- Original Message -----
>> From: "Steve Forst" <[log in to unmask]>
>> To: <[log in to unmask]>
>> Sent: April 16, 2015 17:20
>> Subject: Amp parisitic board failure
>>
>>
>>> Just curious if someone more knowledgeable than me might know what
>>> happened to my amp.
>>>
>>> Sent my AL-80B to Ameritron for service after hearing an arcing
>>> followed by a burning smell.
>>>
>>> Just got an e-mail that a cap on the parasitic board had failed and
>>> board was replaced. $57 plus shipping.
>>>
>>> Just wondering what might have caused this. As I recall, I heard the
>>> arc when I switched from standby to operate, and would smell the
>>> burning odor anytime RF was put to the amp.
>>>
>>> Amp is 6 years old. Just one of those things? Maybe just a bad
>>> component?
>>>
>>> Anyone run into something like this before? I know there could be a
>>> number of reasons, or maybe no reason, but I'm just curious.
>>>
>>> 73, Steve KW3A
>>>
>>
>>
>>
|