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KX-155 Display

KX-155 Display

Hi all. My display on my King 155 has been acting funky. Flashes, digits get all distorted. Anyone have any remedies?
I cleaned the contacts etc. It seems like it hapens only in the summer months.

Do I need a new display?

Any out there for sale?

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Re: KX-155 Display

Yup, you do need a new display.  Most avionics shops can do this for in the neighborhood of $250-300.  As the saying goes..."been there, done that" - Twice!  BTW, turn around time was only a couple of days.

Frank.

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Re: KX-155 Display

Did they just change the glass display or is there more to it?

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Re: KX-155 Display

Bob Wrote:
-------------------------------------------------------
> Hi all. My display on my King 155 has been acting
> funky. Flashes, digits get all distorted. Anyone
> have any remedies?
> I cleaned the contacts etc. It seems like it
> hapens only in the summer months.
>
> Do I need a new display?
>
> Any out there for sale?


One of my hangar neighbors fixed his display by simply disassembling it and cleaning the contacts.  It has been working well again for years.  You do need to be somewhat skilled with this operation, however.


JKG

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Re: KX-155 Display

Both of our displays have flashed, gone very dim and cut out sometimes.  At first it seemed to be an over-heating problem.  We found that the cooling airflow to the avionics was blocked.  Fixing the airflow helped.  Eventually the flickering returned.  Finally we had to send off one unit and now the 2nd one for repairs.  We're not sure if the over-heating did some permanent damage or was something else the cause of the wonky display.  It sees a bit odd to me that they both needed repairs within 2 months of each other.

The bottom line is that the flickering display was a sign of a more serious issue with both KX-155s.  I'm not saying your problem is not in the display, only that our problem was more serious.

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Re: KX-155 Display

Bob, my display problems were more than just bad contacts, although I'm been told that happens.  In my case(s) the displays were replaced.  Some shops keep replacements on the shelf.

Frank.

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Re: KX-155 Display

thanks all, I guess I'll have to take the hit.

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Re: KX-155 Display

I was able to remove my display and clean the contacts but I also found that the part is avail for less than $200 from the large avonics places you find on the internet.

Allan

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Re: KX-155 Display

Just got the news back from a local Avionics shop. The display tested bad. $240 plus labor. Thats about the going rate.

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Re: KX-155 Display

Just wondering what you used to clean the contacts. I am an Engineering tech and found the best way to clean contacts is with a soft white eraser, the type draftsman use. Contact cleaners are fine but this method of cleaning the contact is far superior and leaves no residue. Also make sure you also clean the terminal mount that the display plugs into as well. Of course there are no guarantees, but what the heck, if it saves you some money !

Jurgen

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Re: KX-155 Display

In a rare case, cleaning the contacts may solve the problem. I tried and and it didnt work, so, i replaced the display and all is fine now.

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Re: KX-155 Display

Where would I find documentation on how to remove the KX155 display so I can attempt cleaning?

Anthony

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Re: KX-155 Display

Anthony,
  It should be tray mounted, and it will have a small hex head screw on the bottom in the middle (the little hole on the face).  I think it is a 3/32 hex, just keep unscrewing and it will "unplug".  You can do this as owner maintenance, just remember to put an entry into you airframe log book.

Jim

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Re: KX-155 Display

HI
i am looking for a king kx 155 display
i cannot find it in france
is somebody can guive me adresses where i can find
thank to all
sorry for my bad english
gb

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