Today's Message Index:
----------------------
1. 12:34 AM - volts (Mark Jefferies YAK UK)
2. 07:54 AM - Aviation Nation (Girlypilot)
3. 03:05 PM - Re: Yak 50 radio (Bitterlich, Mark G CIV Det Cherry Point, MALS-14 64E)
4. 09:42 PM - Re: Yak 50 radio (Jan Mevis)
Message 1
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We found a thermal switch at fault once (not on the radio circuit) has
anyone else found these "fuse" switches appear to work but don't? I refer to
YAK type switches. Only one is some 140 a/c over 15 years.
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Bitterlich, Mark G
CIV Det Cherry Point, MALS-14 64E
Sent: woensdag 8 november 2006 23:41
Subject: RE: Yak-List: Yak 50 radio
Sure....
You've got some resistance on the wire between the radio and the battery.
That is assuming that you have the radio connected, and are measuring the
voltage from some point that feeds the radio. If you want to prove this
premise, remove the radio from the mount, and then read the voltage again.
If it jumps up to 28 volts with the radio removed, and drops to 3 volts with
the radio installed, that is without a doubt... your problem. To find the
Message 2
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If anyone will be attending Aviation Nation here in Las Vegas this weekend, contact
me...I'll definitely be there!
Elizabeth
Sin City, USA
586-453-7279
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=73373#73373
Message 3
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I do not own a 52, but a 50. I don't really know the 52 very well, but
I will assume you are at the right place!
Put a meter on the test point junction you described. Pull the actual
R/T and see if the voltage jumps up to 28 volts. If it does, then the
problem is between your junction and the source of power. Sure, the
switch could indeed be bad.
Put radio back in.
Turn the switch off.
Make sure power go to zero volts at your test point.
Now run a wire right to any 28 volt source ... such as straight from the
battery.
Be safe and put in a 10 amp circuit breaker in line somehow.
Hook that new wire to your test point described. See if radio now works
perfectly.
This will confirm the issue.
Remove test wire.
TUrn switch off
hook light bulb from test point to ground.
Turn on switch
Light bulb comes on very dimly. (assuming it is not some tiny weenie
bulb)
now go jiggling wires and switches.
When bulb gets really bright.. you found it!
Best of luck again.
mark
CONFIDENTIALITY NOTICE: This e-mail message, including any attachments,
is for the sole use of the intended recipient(s) and may contain
information, which is confidential to, and/or priviledge in favor of
NATEC and its affiliates or customers. If you are not the intended
recipient, please contact the sender by reply e-mail and destroy all
copies of the original message and any attachments. Thank you.
________________________________
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Jan Mevis
Sent: Thursday, November 09, 2006 0:45
Subject: RE: Yak-List: Yak 50 radio
Thanks, Mark!
The point where the radio gets its supply is at a three-connector place
just behind the throttle, almost next to the air valve. That's where I
measure. The push-to-talk wires go also to one of these points. From
this three-connector point the power feed then disappears in a big bunch
of cables.
>From your explanation, I conclude that there must be a bad wire, making
false contacts. Perhaps it's the switch itself on the front panel?
Might be dangerous too, I suppose. I'll use your method with a light
bulb, much easier than with a multi-meter.
Jan
RA2005K
________________________________
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Bitterlich,
Mark G CIV Det Cherry Point, MALS-14 64E
Sent: woensdag 8 november 2006 23:41
Subject: RE: Yak-List: Yak 50 radio
Sure....
You've got some resistance on the wire between the radio and the
battery. That is assuming that you have the radio connected, and are
measuring the voltage from some point that feeds the radio. If you want
to prove this premise, remove the radio from the mount, and then read
the voltage again. If it jumps up to 28 volts with the radio removed,
and drops to 3 volts with the radio installed, that is without a
doubt... your problem. To find the problem, simply take your voltmeter
(with the radio installed) and start working backwards towards the
battery/power source. When it goes from 3 back up to 28, the problem is
in the middle between those two points.
You can also remove the radio, and connect a light bulb (28 volt) from
the power pin to ground. It will light dimly if at all. Go back and
start jiggling everything. When the light comes on brightly, you have
wiggled the right thing! The old light bulb trick is handy in all
manner of applications. Shorts AND opens....
For clarification, it would be nice to know where you are measuring the
radio voltage from, etc. But ASSUMING (dangerous thing to do) that you
are measuring it with the radio installed, and are reading it from a
known point that for SURE feeds the radio... then the method described
above will work without question.
Good luck,
Mark Bitterlich
N50YK
________________________________
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Jan Mevis
Sent: Wednesday, November 08, 2006 1:39
Subject: Yak-List: Yak 50 radio
Hi all,
I replaced my old ZIABRIK radio by a new BRIZ (which works perfectly,
tested in a lab). But when installed, it sometimes works, sometimes does
not.
I discovered that I only have 3 volts on the supply wire when switching
on the "radio" button on the front panel. First I thought it was the
battery, but I checked it, and it's in perfect shape.
One of the symptoms : I hear some "clicking" or "ticking" in the
headset, and usually after 3 to 4 minutes, it switches on. As if one or
another relay tries to switch on ?
It's definitely not the new radio, since I am using a provisional
bypass, connecting it immediately to the battery - until the problem is
solved. The problem is not introduced with the new radio either, since
with the old radio, I had the same problem. This is the reason why I was
forced to replace the old radio (thinking it was dead).
Any idea ?
Best regards,
Jan Mevis
Yak 50 RA2005K
href="http://www.aeroelectric.com">www.aeroelectric.com
href="http://www.buildersbooks.com">www.buildersbooks.com
href="http://www.kitlog.com">www.kitlog.com
href="http://www.homebuilthelp.com">www.homebuilthelp.com
href="http://www.matronics.com/Navigator?Yak-List">http://www.matronics
.
com/Navigator?Yak-List
www.aeroelectric.com
www.kitlog.com
http://www.matronics.com/Navigator?Yak-List
Message 4
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My plane, RA2005K, is a Yak 50 too!
I will do exactly as you describe it.
Thanks !
_____
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Bitterlich, Mark G
CIV Det Cherry Point, MALS-14 64E
Sent: vrijdag 10 november 2006 0:04
Subject: RE: Yak-List: Yak 50 radio
I do not own a 52, but a 50. I don't really know the 52 very well, but I
will assume you are at the right place!
Put a meter on the test point junction you described. Pull the actual R/T
and see if the voltage jumps up to 28 volts. If it does, then the problem
is between your junction and the source of power. Sure, the switch could
indeed be bad.
Put radio back in.
Turn the switch off.
Make sure power go to zero volts at your test point.
Now run a wire right to any 28 volt source ... such as straight from the
battery.
Be safe and put in a 10 amp circuit breaker in line somehow.
Hook that new wire to your test point described. See if radio now works
perfectly.
This will confirm the issue.
Remove test wire.
TUrn switch off
hook light bulb from test point to ground.
Turn on switch
Light bulb comes on very dimly. (assuming it is not some tiny weenie bulb)
now go jiggling wires and switches.
When bulb gets really bright.. you found it!
Best of luck again.
mark
CONFIDENTIALITY NOTICE: This e-mail message, including any attachments, is
for the sole use of the intended recipient(s) and may contain information,
which is confidential to, and/or priviledge in favor of NATEC and its
affiliates or customers. If you are not the intended recipient, please
contact the sender by reply e-mail and destroy all copies of the original
message and any attachments. Thank you.
_____
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Jan Mevis
Sent: Thursday, November 09, 2006 0:45
Subject: RE: Yak-List: Yak 50 radio
Thanks, Mark!
The point where the radio gets its supply is at a three-connector place just
behind the throttle, almost next to the air valve. That's where I measure.
The push-to-talk wires go also to one of these points. From this
three-connector point the power feed then disappears in a big bunch of
cables.
>From your explanation, I conclude that there must be a bad wire, making
false contacts. Perhaps it's the switch itself on the front panel? Might be
dangerous too, I suppose. I'll use your method with a light bulb, much
easier than with a multi-meter.
Jan
RA2005K
_____
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Bitterlich, Mark G
CIV Det Cherry Point, MALS-14 64E
Sent: woensdag 8 november 2006 23:41
Subject: RE: Yak-List: Yak 50 radio
Sure....
You've got some resistance on the wire between the radio and the battery.
That is assuming that you have the radio connected, and are measuring the
voltage from some point that feeds the radio. If you want to prove this
premise, remove the radio from the mount, and then read the voltage again.
If it jumps up to 28 volts with the radio removed, and drops to 3 volts with
the radio installed, that is without a doubt... your problem. To find the
problem, simply take your voltmeter (with the radio installed) and start
working backwards towards the battery/power source. When it goes from 3
back up to 28, the problem is in the middle between those two points.
You can also remove the radio, and connect a light bulb (28 volt) from the
power pin to ground. It will light dimly if at all. Go back and start
jiggling everything. When the light comes on brightly, you have wiggled the
right thing! The old light bulb trick is handy in all manner of
applications. Shorts AND opens....
For clarification, it would be nice to know where you are measuring the
radio voltage from, etc. But ASSUMING (dangerous thing to do) that you are
measuring it with the radio installed, and are reading it from a known point
that for SURE feeds the radio... then the method described above will work
without question.
Good luck,
Mark Bitterlich
N50YK
_____
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Jan Mevis
Sent: Wednesday, November 08, 2006 1:39
Subject: Yak-List: Yak 50 radio
Hi all,
I replaced my old ZIABRIK radio by a new BRIZ (which works perfectly, tested
in a lab). But when installed, it sometimes works, sometimes does not.
I discovered that I only have 3 volts on the supply wire when switching on
the "radio" button on the front panel. First I thought it was the battery,
but I checked it, and it's in perfect shape.
One of the symptoms : I hear some "clicking" or "ticking" in the headset,
and usually after 3 to 4 minutes, it switches on. As if one or another relay
tries to switch on ?
It's definitely not the new radio, since I am using a provisional bypass,
connecting it immediately to the battery - until the problem is solved. The
problem is not introduced with the new radio either, since with the old
radio, I had the same problem. This is the reason why I was forced to
replace the old radio (thinking it was dead).
Any idea ?
Best regards,
Jan Mevis
Yak 50 RA2005K
href="http://www.aeroelectric.com">www.aeroelectric.com
href="http://www.buildersbooks.com">www.buildersbooks.com
href="http://www.kitlog.com">www.kitlog.com
href="http://www.homebuilthelp.com">www.homebuilthelp.com
href="http://www.matronics.com/Navigator?Yak-List">http://www.matronics.com/
Navigator?Yak-List
www.aeroelectric.com
www.kitlog.com
http://www.matronics.com/Navigator?Yak-List
href="http://www.aeroelectric.com">www.aeroelectric.com
href="http://www.buildersbooks.com">www.buildersbooks.com
href="http://www.kitlog.com">www.kitlog.com
href="http://www.homebuilthelp.com">www.homebuilthelp.com
href="http://www.matronics.com/Navigator?Yak-List">http://www.matronics.com/
Navigator?Yak-List
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