Narco Mk 12D display?

[jim]

Anyone have a source for parts (namely, the display) for a Mk 12D
rather than having the factory do it? They won't sell the part
seperatly.

Jim

[Mike Spera]

jim wrote:

> Anyone have a source for parts (namely, the display) for a Mk 12D
> rather than having the factory do it? They won't sell the part
> seperatly.
>
> Jim
>
I had mine replaced at "Sky Ranch" (SQI, Whiteside County,
Illinois)about 8 years ago. Cost $200 then. I'm not sure if they are
still in business. No, they won't sell the part. But, if you ship it to
Narco, they will replace it for a couple bucks more than the part price.
Lessee, after 8 years, it should only cost around $900...

Good Luck,
Mike

[Gus Cabre]

Looking for parts last night, I came across their website:
http://www.sacskyranch.com/.

Gus

"Mike Spera" > wrote in message
ink.net...
> jim wrote:
>
>> Anyone have a source for parts (namely, the display) for a Mk 12D
>> rather than having the factory do it? They won't sell the part
>> seperatly.
>>
>> Jim
>>
> I had mine replaced at "Sky Ranch" (SQI, Whiteside County, Illinois)about
> 8 years ago. Cost $200 then. I'm not sure if they are still in business.
> No, they won't sell the part. But, if you ship it to Narco, they will
> replace it for a couple bucks more than the part price. Lessee, after 8
> years, it should only cost around $900...
>
> Good Luck,
> Mike

[Mike Spera]

> Looking for parts last night, I came across their website:
> http://www.sacskyranch.com/.
>
> Gus
>

Completely different place. Mine is (was) in North-Central Illinois.

I believe they are history.
Mike

[Al[_2_]]

jim wrote:
> Anyone have a source for parts (namely, the display) for a Mk 12D
> rather than having the factory do it? They won't sell the part
> seperatly.
>
> Jim
>

I had our display replaced by our Avionics shop a couple of years ago.
Narco shipped the part to him. This was reinforced by the Narco rep I
talked to at AOPA.

Al
1964 Skyhawk
SFF

[[email protected]]

Al wrote:
> jim wrote:
> > Anyone have a source for parts (namely, the display) for a Mk 12D
> > rather than having the factory do it? They won't sell the part
> > seperatly.
> >
> > Jim
> >
>
> I had our display replaced by our Avionics shop a couple of years ago.
> Narco shipped the part to him. This was reinforced by the Narco rep I
> talked to at AOPA.
>
> Al
> 1964 Skyhawk
> SFF

Same here. We've had several of these displays replaced, at a parts
cost of well over $300 per unit. We don't buy Narco radios anymore,
having spent much more than the original purchase cost on them to keep
them going.

Dan

[Ron]

I had the display replaced a couple of years ago after a couple of segments
"burnt out". Had to be shipped to Australia with special packaging, due to
the minute radioactive material in the display. Cost about $800 AU.

I now hold my finger of the LCD so the display does not flash brightly when
the unit is turned on.

regards
Ron


> wrote in message
ups.com...
>
> Al wrote:
>> jim wrote:
>> > Anyone have a source for parts (namely, the display) for a Mk 12D
>> > rather than having the factory do it? They won't sell the part
>> > seperatly.
>> >
>> > Jim
>> >
>>
>> I had our display replaced by our Avionics shop a couple of years ago.
>> Narco shipped the part to him. This was reinforced by the Narco rep I
>> talked to at AOPA.
>>
>> Al
>> 1964 Skyhawk
>> SFF
>
> Same here. We've had several of these displays replaced, at a parts
> cost of well over $300 per unit. We don't buy Narco radios anymore,
> having spent much more than the original purchase cost on them to keep
> them going.
>
> Dan
>

[[email protected]]

On Tue, 2 Jan 2007 14:12:34 +1100, "Ron" >
wrote:

>I had the display replaced a couple of years ago after a couple of segments
>"burnt out". Had to be shipped to Australia with special packaging, due to
>the minute radioactive material in the display. Cost about $800 AU.
>
>I now hold my finger of the LCD so the display does not flash brightly when
>the unit is turned on.
>
>regards
>Ron
>

Can you clarify what you mean re. finger. we have just replaced a
display in one of our sets!

In the past the Tx audio failed on 2xCOM and needed a zener diode
replacing. The IDME has had an intermittent DME reading from new on
low frequencies (used by ILS).

Such a shame they are unreliable as they are easy to use and offer
some nice frills.

David

[Ron]

My apologises, I cover the LDR (The intensity control) with my finger to
reduce the initial intensity of the display on power on.

Otherwise a nice set. However it resets the standby frequency to 121.9 MHz
on power on.
--

regards
Ron


> wrote in message
...
> On Tue, 2 Jan 2007 14:12:34 +1100, "Ron" >
> wrote:
>
>>I had the display replaced a couple of years ago after a couple of
>>segments
>>"burnt out". Had to be shipped to Australia with special packaging, due to
>>the minute radioactive material in the display. Cost about $800 AU.
>>
>>I now hold my finger of the LCD so the display does not flash brightly
>>when
>>the unit is turned on.
>>
>>regards
>>Ron
>>
>
> Can you clarify what you mean re. finger. we have just replaced a
> display in one of our sets!
>
> In the past the Tx audio failed on 2xCOM and needed a zener diode
> replacing. The IDME has had an intermittent DME reading from new on
> low frequencies (used by ILS).
>
> Such a shame they are unreliable as they are easy to use and offer
> some nice frills.
>
> David

[[email protected]]

On Thu, 4 Jan 2007 11:00:00 +1100, "Ron" >
wrote:

>My apologises, I cover the LDR (The intensity control) with my finger to
>reduce the initial intensity of the display on power on.
>
>Otherwise a nice set. However it resets the standby frequency to 121.9 MHz
>on power on.

Thanks, I wondered if that's what you meant.
I discovered that covering the LDR during the day caused the display
to vanish completely when we had a fault:-(
Fortunately for my night flight I still had COM2.

Have you checked the Operating Manual? The standby frequency is
supposed to reset to 121.9 when you switch Off then On. You can then
count the MHz and KHz by counting the detents as you rotate the
control. If you don't loose count then you can set any frequency (NAV
or COM) with a loss of display display. The NAV standby frequency
resets to 110.50 when powered Off then On.

David

[Ross]

Ron wrote:
> My apologises, I cover the LDR (The intensity control) with my finger to
> reduce the initial intensity of the display on power on.
>
> Otherwise a nice set. However it resets the standby frequency to 121.9 MHz
> on power on.
I have two MK12Ds and they do the same thing. I believe that is normal.
Check the Narco website. I had to do the same thing on the LED when it
was cold. I have sent both units to NARCO for R&R and very please.

--

Regards, Ross
C-172F 180HP
KSWI

[[email protected]]

On Thu, 04 Jan 2007 11:12:09 -0600, Ross > wrote:

>Ron wrote:
>> My apologises, I cover the LDR (The intensity control) with my finger to
>> reduce the initial intensity of the display on power on.
>>
>> Otherwise a nice set. However it resets the standby frequency to 121.9 MHz
>> on power on.
>I have two MK12Ds and they do the same thing. I believe that is normal.
>Check the Narco website. I had to do the same thing on the LED when it
>was cold. I have sent both units to NARCO for R&R and very please.

Go to: http://www.narco-avionics.com/
See also under MK12D/Retro handbook which makes this clearer.

david

[Clyde Woempner]

Don't waste your money or time with a narco product, My read-outs went bad a
month after it was off warranty. I spent $700.00 for the repairs. Then the
radio quit working two years later. It was not worth spending anymore
money on it, I pulled it out and threw it in the trash. This radio, Mk12D
had less than 200 hundred hours on it. Never again will I buy a Narco
product, there products are crap. Sincerely.
Clyde Woempner
n19346

"jim" > wrote in message
oups.com...
> Anyone have a source for parts (namely, the display) for a Mk 12D
> rather than having the factory do it? They won't sell the part
> seperatly.
>
> Jim
>

[Ron]

Thanks David,

I see from the manual the 'keep alive' pin is no longer used in later
models.
Does anyone know how to 'keep' the standby freq 'alive' ie not reset to
121.9.

I guess the power-on spike to the display is controlled thru the LDR
circuitry.
regards
Ron


> wrote in message
...
> On Thu, 04 Jan 2007 11:12:09 -0600, Ross > wrote:
>
>>Ron wrote:
>>> My apologises, I cover the LDR (The intensity control) with my finger to
>>> reduce the initial intensity of the display on power on.
>>>
>>> Otherwise a nice set. However it resets the standby frequency to 121.9
>>> MHz
>>> on power on.
>>I have two MK12Ds and they do the same thing. I believe that is normal.
>>Check the Narco website. I had to do the same thing on the LED when it
>>was cold. I have sent both units to NARCO for R&R and very please.
>
> Go to: http://www.narco-avionics.com/
> See also under MK12D/Retro handbook which makes this clearer.
>
> david

[Ross]

Clyde Woempner wrote:
> Don't waste your money or time with a narco product, My read-outs went bad a
> month after it was off warranty. I spent $700.00 for the repairs. Then the
> radio quit working two years later. It was not worth spending anymore
> money on it, I pulled it out and threw it in the trash. This radio, Mk12D
> had less than 200 hundred hours on it. Never again will I buy a Narco
> product, there products are crap. Sincerely.
> Clyde Woempner
> n19346
>
> "jim" > wrote in message
> oups.com...
>
>>Anyone have a source for parts (namely, the display) for a Mk 12D
>>rather than having the factory do it? They won't sell the part
>>seperatly.
>>
>>Jim

I have heard this often. I have two MK12Ds that were originally build in
the mid 80s. I bought the plane in '96 and they worked fine. Then the #2
started going south and I sent it to Narco for R&R. They did a fine job.
Later the #1 started to loose the display and I sent it in for R&R. Now
I have two good radios and working with the factory was fine. With the
#2 repair and later problem came up just after warranty. They fixed it
under warranty. I have been satisfied.


--

Regards, Ross
C-172F 180HP
KSWI

[mbremer216]

I'll second that Ross.

I have 2 Mk 12D units, probably some of the first produced. They were in
service forever. Last year, both displays started to go and one unit was
having trouble with the auto squelch letting everything in. I took
advantage of the opportunity and sent both units back to Narco for the 12D+
upgrade. They replaced the bulk of the electronics, the displays and the
faceplates. They now not only work like new (they basically are now) but
have keep alive and 10 Com presets for my favorite channels.

The price for the 12D+ upgrade was a fraction of the cost of a new radio.
BTW, the price quoted me for a factory display replacement was a tick over
$300.

Mike

Reports from those receiving me are that the signal quality is outstanding.
"Ross" > wrote in message
...
> Clyde Woempner wrote:
>> Don't waste your money or time with a narco product, My read-outs went
>> bad a
>> month after it was off warranty. I spent $700.00 for the repairs. Then
>> the
>> radio quit working two years later. It was not worth spending anymore
>> money on it, I pulled it out and threw it in the trash. This radio, Mk12D
>> had less than 200 hundred hours on it. Never again will I buy a Narco
>> product, there products are crap. Sincerely.
>> Clyde Woempner
>> n19346
>>
>> "jim" > wrote in message
>> oups.com...
>>
>>>Anyone have a source for parts (namely, the display) for a Mk 12D
>>>rather than having the factory do it? They won't sell the part
>>>seperatly.
>>>
>>>Jim
>
> I have heard this often. I have two MK12Ds that were originally build in
> the mid 80s. I bought the plane in '96 and they worked fine. Then the #2
> started going south and I sent it to Narco for R&R. They did a fine job.
> Later the #1 started to loose the display and I sent it in for R&R. Now I
> have two good radios and working with the factory was fine. With the #2
> repair and later problem came up just after warranty. They fixed it under
> warranty. I have been satisfied.
>
>
> --
>
> Regards, Ross
> C-172F 180HP
> KSWI