Today's Message Index:
----------------------
1. 05:02 AM - Re: Yak-List Digest: 1 Msgs - 05/26/24 (Greg Wrobel)
2. 06:00 AM - Re: Re: Yak-List Digest: 1 Msgs - 05/26/24 (Justin Drafts)
3. 06:54 AM - Re: Re: Yak-List Digest: 1 Msgs - 05/26/24 (Mark Pennington)
Message 1
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| Subject: | Re: Yak-List Digest: 1 Msgs - 05/26/24 |
Harv,
I'm not aware of any fuse prior to the Master switch. It is a pain but have
you checked the voltage at the master switch. The master switch may have
failed internally and although you have turned it on, the contacts are not
switching over. I have had switch fail before. Turned it on and nothing
happened.
Greg Wrobel
On Mon, May 27, 2024, 01:35 Yak-List Digest Server <yak-list@matronics.com>
wrote:
> *
>
> =================================================
> Online Versions of Today's List Digest Archive
> =================================================
>
> Today's complete Yak-List Digest can also be found in either of the
> two Web Links listed below. The .html file includes the Digest formatted
> in HTML for viewing with a web browser and features Hyperlinked Indexes
> and Message Navigation. The .txt file includes the plain ASCII version
> of the Yak-List Digest and can be viewed with a generic text editor
> such as Notepad or with a web browser.
>
> HTML Version:
>
>
> http://www.matronics.com/digest/digestview.php?Style=82701&View=html&Chapter 24-05-26&Archive=Yak
>
> Text Version:
>
>
> http://www.matronics.com/digest/digestview.php?Style=82701&View=txt&Chapter 24-05-26&Archive=Yak
>
>
> ===============================================
> EMail Version of Today's List Digest Archive
> ===============================================
>
>
> ----------------------------------------------------------
> Yak-List Digest Archive
> ---
> Total Messages Posted Sun 05/26/24: 1
> ----------------------------------------------------------
>
>
> Today's Message Index:
> ----------------------
>
> 1. 11:15 PM - Cj6 no battery power (Harv)
>
>
> ________________________________ Message 1
> _____________________________________
>
>
> Time: 11:15:58 PM PST US
> Subject: Yak-List: Cj6 no battery power
> From: "Harv" <martin.harvey@kbr.com>
>
>
> I experienced something strange yesterday which Ive not come across with
> my CJ
> before.
>
> Aircraft is in use but toddy theres no power at all to the switches in the
> front
> cockpit?
>
> Ive checked the batteries and they seem ok at around 13v each ( charged
> them anyway)
>
> Does anyone know if theres a master power fuse in the AC which is hidden
> somewhere
> that I might have overlooked?
>
> I removed all the glass fuses in the black box unit behind the pilot seat
> and these
> all look good.
>
> Any ideas appreciated
>
> Thanks
>
> Harv
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=513606#513606
>
>
Message 2
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| Subject: | Re: Yak-List Digest: 1 Msgs - 05/26/24 |
Hey Harv,
How frustrating.
I agree w/ Greg W, these blocky switches on the CJ's front cockpit's row of
toggle switches are
internal fuse type (like a built-in circuit breaker), and they get old and
can go bad, or can be susceptible
to corrosion/oxidation. Thankfully they're not that expensive and not
really difficult to replace.
Having done it before, my advice (from the backseat) is to start by
replacing the master switch, or doing
a simple continuity check w/ multimeter from the switch's back side.
The Chinese made the access to the back side of the switch bank pretty
straightforward, via fuselage
access panel on the front L/H side of the nose, just behind the cowlings.
Think I have photos, if you'd like.
Best,
Justin Drafts
draftsjust417@gmail.com
On Thu, May 30, 2024 at 5:06=AFAM Greg Wrobel <clouddog22@gmail.com>
wrote:
> Harv,
>
> I'm not aware of any fuse prior to the Master switch. It is a pain but
> have you checked the voltage at the master switch. The master switch may
> have failed internally and although you have turned it on, the contacts a
re
> not switching over. I have had switch fail before. Turned it on and nothi
ng
> happened.
>
> Greg Wrobel
>
> On Mon, May 27, 2024, 01:35 Yak-List Digest Server <yak-list@matronics.co
m>
> wrote:
>
>> *
>>
>> =======================
=
>> Online Versions of Today's List Digest Archive
>> =======================
=
>>
>> Today's complete Yak-List Digest can also be found in either of the
>> two Web Links listed below. The .html file includes the Digest formatte
d
>> in HTML for viewing with a web browser and features Hyperlinked Indexes
>> and Message Navigation. The .txt file includes the plain ASCII version
>> of the Yak-List Digest and can be viewed with a generic text editor
>> such as Notepad or with a web browser.
>>
>> HTML Version:
>>
>>
>> http://www.matronics.com/digest/digestview.php?Style=82701&View=html
&Chapter 24-05-26&Archive=Yak
>>
>> Text Version:
>>
>>
>> http://www.matronics.com/digest/digestview.php?Style=82701&View=txt&
Chapter 24-05-26&Archive=Yak
>>
>>
>> ======================
>> EMail Version of Today's List Digest Archive
>> ======================
>>
>>
>> ----------------------------------------------------------
>> Yak-List Digest Archive
>> ---
>> Total Messages Posted Sun 05/26/24: 1
>> ----------------------------------------------------------
>>
>>
>> Today's Message Index:
>> ----------------------
>>
>> 1. 11:15 PM - Cj6 no battery power (Harv)
>>
>>
>>
>> ________________________________ Message 1
>> _____________________________________
>>
>>
>> Time: 11:15:58 PM PST US
>> Subject: Yak-List: Cj6 no battery power
>> From: "Harv" <martin.harvey@kbr.com>
>>
>>
>> I experienced something strange yesterday which Ive not come across with
>> my CJ
>> before.
>>
>> Aircraft is in use but toddy theres no power at all to the switches in
>> the front
>> cockpit?
>>
>> Ive checked the batteries and they seem ok at around 13v each ( charged
>> them anyway)
>>
>> Does anyone know if theres a master power fuse in the AC which is hidden
>> somewhere
>> that I might have overlooked?
>>
>> I removed all the glass fuses in the black box unit behind the pilot sea
t
>> and these
>> all look good.
>>
>> Any ideas appreciated
>>
>> Thanks
>>
>> Harv
>>
>>
>> Read this topic online here:
>>
>> http://forums.matronics.com/viewtopic.php?p=513606#513606
>>
>>
>>
>>
>> ==========
>> List" rel="noreferrer noreferrer" target="_blank">
>> http://www.matronics.com/Navigator?Yak-List
>> ==========
>> FORUMS -
>> eferrer noreferrer" target="_blank">http://forums.matronics.com
>> ==========
>> WIKI -
>> errer noreferrer" target="_blank">http://wiki.matronics.com
>> ==========
>> b Site -
>> -Matt Dralle, List Admin.
>> ="noreferrer noreferrer" target="_blank">
>> https://matronics.com/contribution
>> ==========
>>
>>
>>
>>
>>
Message 3
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| Subject: | Re: Yak-List Digest: 1 Msgs - 05/26/24 |
Harv
I own and operate a CJ.
The Master Switch is hot on one side at all times. When you turn it on, it
pulls in the contactor that is in the vertical black box behind your right
elbow on the cross member.
When that pulls in it applies power to all of the switches, alternator etc.
The back of the switch panel comes off with two thumb screws and if you get
in the plane and lay on your back you can put a voltmeter on the terminals
of the master switch. There should be 24 volts or so on one of the
screws. If there is and you turn it on and if you dont hear that contactor
pull in.
Either the switch is bad or the contactor is bad. To check the switch
take off both wires and use the ohms reading function and see if the switch
goes from open circuit to close to a dead short.
You can't check the switch using power unless you remove the wire on the
output side of the switch.
If you would like some more info please feel free to call at any time.
Mark Peninngton
Richmond VA
N621CJ
804-399-4224
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On Thu, May 30, 2024 at 8:06=AFAM Greg Wrobel <clouddog22@gmail.com>
wrote:
> Harv,
>
> I'm not aware of any fuse prior to the Master switch. It is a pain but
> have you checked the voltage at the master switch. The master switch may
> have failed internally and although you have turned it on, the contacts a
re
> not switching over. I have had switch fail before. Turned it on and nothi
ng
> happened.
>
> Greg Wrobel
>
> On Mon, May 27, 2024, 01:35 Yak-List Digest Server <yak-list@matronics.co
m>
> wrote:
>
>> *
>>
>> =======================
=
>> Online Versions of Today's List Digest Archive
>> =======================
=
>>
>> Today's complete Yak-List Digest can also be found in either of the
>> two Web Links listed below. The .html file includes the Digest formatte
d
>> in HTML for viewing with a web browser and features Hyperlinked Indexes
>> and Message Navigation. The .txt file includes the plain ASCII version
>> of the Yak-List Digest and can be viewed with a generic text editor
>> such as Notepad or with a web browser.
>>
>> HTML Version:
>>
>>
>> http://www.matronics.com/digest/digestview.php?Style=82701&View=html
&Chapter 24-05-26&Archive=Yak
>>
>> Text Version:
>>
>>
>> http://www.matronics.com/digest/digestview.php?Style=82701&View=txt&
Chapter 24-05-26&Archive=Yak
>>
>>
>> ======================
>> EMail Version of Today's List Digest Archive
>> ======================
>>
>>
>> ----------------------------------------------------------
>> Yak-List Digest Archive
>> ---
>> Total Messages Posted Sun 05/26/24: 1
>> ----------------------------------------------------------
>>
>>
>> Today's Message Index:
>> ----------------------
>>
>> 1. 11:15 PM - Cj6 no battery power (Harv)
>>
>>
>>
>> ________________________________ Message 1
>> _____________________________________
>>
>>
>> Time: 11:15:58 PM PST US
>> Subject: Yak-List: Cj6 no battery power
>> From: "Harv" <martin.harvey@kbr.com>
>>
>>
>> I experienced something strange yesterday which Ive not come across with
>> my CJ
>> before.
>>
>> Aircraft is in use but toddy theres no power at all to the switches in
>> the front
>> cockpit?
>>
>> Ive checked the batteries and they seem ok at around 13v each ( charged
>> them anyway)
>>
>> Does anyone know if theres a master power fuse in the AC which is hidden
>> somewhere
>> that I might have overlooked?
>>
>> I removed all the glass fuses in the black box unit behind the pilot sea
t
>> and these
>> all look good.
>>
>> Any ideas appreciated
>>
>> Thanks
>>
>> Harv
>>
>>
>> Read this topic online here:
>>
>> http://forums.matronics.com/viewtopic.php?p=513606#513606
>>
>>
>>
>>
>> ==========
>> List" rel="noreferrer noreferrer" target="_blank">
>> http://www.matronics.com/Navigator?Yak-List
>> ==========
>> FORUMS -
>> eferrer noreferrer" target="_blank">http://forums.matronics.com
>> ==========
>> WIKI -
>> errer noreferrer" target="_blank">http://wiki.matronics.com
>> ==========
>> b Site -
>> -Matt Dralle, List Admin.
>> ="noreferrer noreferrer" target="_blank">
>> https://matronics.com/contribution
>> ==========
>>
>>
>>
>>
>>
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