[bars] When is a fuse not a fuse, redux?

Tue Oct 17 08:48:19 EDT 2023

And I certainly don't mind when I am proven wrong and the results are good.
LOL! Good to hear this,

73,
KC1SOZ
Juan

On Tue, Oct 17, 2023 at 8:25 AM TimC <k1dc.radio at gmail.com> wrote:

> Here is the 'official' reply from Icom:
>
>
> *Greetings Tim, *
>
> * Thank you for contacting Icom America. *
> *Below is a breakdown of the fuse designators. Replacement fuses can be
> found at local places like Home Depot, Lowes, Digi-Key, and Mouser, or you
> can order replacements through our Parts Dept (p/n - 5210000090).*
> *F - Fast blow*
> *G - full-range breaking capacity, meaning that the fuse is capable of
> breaking all overcurrents from its minimum melting current up to its
> breaking capacity.*
> *B - trips at fault currents 3-5 times the rated current*
>
> So.... basically your average 30A fast-blow fuse.  Cool.
>
> 73,
>
> Tim - K1DC
>
> On 16-Oct-23 18:52, KC1SOZ wrote:
>
> Oh, never mind, it is FGB, but when they are listed as ICOM as the
> manufacturer, you know there's something funky going on.
>
> 5210000090 FUSE FGB 30A M710 706 M802
>
> 73,
> KC1SOZ
> Juan
>
>
> On Mon, Oct 16, 2023 at 6:49 PM KC1SOZ <kc1soz at bd5.com> wrote:
>
>> FSB, not FGB.
>>
>> 73,
>> KC1SOZ
>> Juan
>>
>>
>> On Mon, Oct 16, 2023 at 6:25 PM Greg <wa1emg at yahoo.com> wrote:
>>
>>> Fuse, glass body
>>>
>>>
>>> Sent from Yahoo Mail for iPad
>>>
>>> On Monday, October 16, 2023, 18:17, KC1SOZ <kc1soz at bd5.com> wrote:
>>>
>>> That likely means someone who didn't know what FGB is just popped
>>> regular fuses on there. FGB 30A fuses can be had for relatively little
>>> money, just search for "FGB 30A fuse". It would be a good idea to put the
>>> right ones in there.
>>>
>>> 73,
>>> KC1SOZ
>>> Juan
>>>
>>>
>>> On Mon, Oct 16, 2023 at 6:11 PM TimC <k1dc.radio at gmail.com> wrote:
>>>
>>> - The DC supply line is original Icom OEM.
>>>
>>> - Yup, all of the above.
>>>
>>> The fix was to replace the in-line fuse on the negative DC supply.  All
>>> better now.  Although, it seems the spec. in the manual calls for a 'FGB 30
>>> A' fuse.  There was, and is, a 25 A 'normal' glass cylinder fuse.  I'm
>>> still a bit fuzzy on what exactly a 'FGB' fuse might be.
>>>
>>> 73,
>>>
>>> T.
>>>
>>> On 16-Oct-23 16:48, Andy Wallace wrote:
>>>
>>> Can the DC cable wiring handle the current (25A? Not aftermarket cable)?
>>>
>>> Do you power down the rig first then the supply, and the supply first
>>> then the rig for power up?
>>> Andy
>>> KA1GTT
>>>
>>> On Oct 16, 2023, at 10:42 AM, TimC <k1dc.radio at gmail.com>
>>> <k1dc.radio at gmail.com> wrote:
>>>
>>>  Almost a year and a half ago my TS-2000 developed a problem with
>>> intermittent shutdown that eventually graduated to brick status.  After
>>> MUCH troubleshooting the root cause was a power line fuse that had
>>> transformed into a 1.2k resistor.  I thought at the time that this was so
>>> weird it had to be a one-off.
>>>
>>> Well... now it's a two-off.  My IC-756 did the exact same thing this
>>> morning after some heavy FT8 use and sure enough, another fuse->resistor
>>> transformation.  Just to be clear, they don't show as open, nor short.
>>> They read ~1k ohm.
>>>
>>> Is this a known/common occurrence or do I live in some weird hole in the
>>> universe where these things happen?
>>>
>>> 73,
>>>
>>> T.
>>> --
>>>
>>> Courageously sent from a non-Apple device that *includes* a headphone
>>> jack.
>>> ------------------------------
>>> <https://k1dc.com/img/k1dc-qsl-card-front.png> Tim Carter - K1DC (was
>>> KC1RET)
>>> +1.978.710.0133
>>> k1dc.radio at gmail.com <kc1ret.radio at gmail.com>
>>> https://k1dc.com
>>>
>>> "Computers are incredibly fast, accurate and stupid; humans are
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>>> beyond imagination." -- *Albert Einstein*
>>>
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>>> --
>>>
>>> Courageously sent from a non-Apple device that *includes* a headphone
>>> jack.
>>> ------------------------------
>>> <https://k1dc.com/img/k1dc-qsl-card-front.png> Tim Carter - K1DC (was
>>> KC1RET)
>>> +1.978.710.0133
>>> k1dc.radio at gmail.com <kc1ret.radio at gmail.com>
>>> https://k1dc.com
>>>
>>> "Computers are incredibly fast, accurate and stupid; humans are
>>> incredibly slow, inaccurate and brilliant; together they are powerful
>>> beyond imagination." -- *Albert Einstein*
>>>
>>> Warning: Spelling errors in this message are the product of a poor
>>> school system. Pay teachures more than athletes.
>>> IMPORTANT: This email is intended for the use of the individual
>>> addressee(s) named above and may contain information that is confidential
>>> privileged or unsuitable for overly sensitive persons with low self-esteem,
>>> no sense of humor or irrational religious beliefs. If you are not the
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> --
>
> Courageously sent from a non-Apple device that *includes* a headphone
> jack.
> ------------------------------
> <https://k1dc.com/img/k1dc-qsl-card-front.png> Tim Carter - K1DC (was
> KC1RET)
> +1.978.710.0133 <1.978.710.0133>
> k1dc.radio at gmail.com <kc1ret.radio at gmail.com>
> https://k1dc.com
>
> "Computers are incredibly fast, accurate and stupid; humans are incredibly
> slow, inaccurate and brilliant; together they are powerful beyond
> imagination." -- *Albert Einstein*
>
> Warning: Spelling errors in this message are the product of a poor school
> system. Pay teachures more than athletes.
> IMPORTANT: This email is intended for the use of the individual
> addressee(s) named above and may contain information that is confidential
> privileged or unsuitable for overly sensitive persons with low self-esteem,
> no sense of humor or irrational religious beliefs. If you are not the
> intended recipient, any dissemination, distribution or copying of this
> email is not authorized (either explicitly or implicitly) and constitutes
> an irritating social fauxpas. No animals were harmed in the transmission of
> this email, although the mutt next door is living on borrowed time, let me
> tell you.
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> bars mailing list
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>
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