[R-390] Troubleshooting "unrepairable" radios

[Cecil Acuff]

The standard first step in troubleshooting any piece of electronic equipment 
is to do a very thorough visual inspection.  If a problem turns up after 
work has been done it is reasonable to assume the problem is in the area 
last worked on.  These two "truths" have always saved me a tremendous amount 
of time.

Cecil...
----- Original Message ----- 
From: "KC8OPP Roger S." <kc8opp at yahoo.com>
To: <R-390 at mailman.qth.net>
Sent: Friday, December 16, 2005 6:34 AM
Subject: Re: [R-390] Troubleshooting "unrepairable" radios


> Joe,
>
> With all due respect, I believe you should start all
> trouble shooting jobs with the "REALLY obvious".  More
> times than I can count I have followed up some very
> good techs only to find that they have missed a very
> important step or symptom.  Sometimes this can be
> perceived as an insult to their ability, because they
> KNOW they have checked/followed everything.  Don't
> assume anything, cause you know what that makes u and
> me.
>
> Roger
> KC8OPP
> USAF trained R-390 fixer (30474)
>
>
>
> --- Joe Foley <redmenaced at yahoo.com> wrote:
>
>>
>>
>> --- Tom Norris <r390a at bellsouth.net> wrote:
>>
>> > Jon's solution reminded me of a Troubleshooting
>> > Adventure I had no
>> > too long ago on a radio marked "not repairable"
>> ++++++++
>> Good story, Tom,
>>
>> Whenever I'm discussing troubleshooting I always
>> want
>> to know WHO worked on it last and what their level
>> of
>> expertise is.  It's important!
>>
>> I want to know what they might have looked at and
>> what
>> they have seen in the past.  If that person is a
>> good
>> troubleshooter I KNOW I have to look much closer for
>> something THEY didn't find and I must suspect
>> EVERYTHING.
>>
>> But, if the guy was a newby then I know I have to
>> start with the obvious first, maybe even the REALLY
>> obvious.
>>
>> A maintenance electrician has an advantage over the
>> new-construction electrician in that he knows the
>> machine worked at one time, the construction
>> electrician has no idea whether the thing will
>> actually work, or even if it was designed properly,
>> or
>> what effect any design changes had on the final
>> product.
>>
>> Joe
>>
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