KN64 DME Display Issues

[BigTex]

My KN64 DME display is on the fritz... Any recommendations on where I can get it repaired?

[N601RX]

Most all the king products of that time use a display that plugs Into a socket. If it's a finger socket removing and cleaning with a pencil eraser will usually get the missing segments back working. The slightly newer stuff uses a round pin socket and reseating will often fix these.

[BigTex]

Great... I'll give that a try.

[Alan Fox]

If that doesn't work , I have a used 64 you can have for 750 , or a 62 that's got a bad receiver with a good display for 200.....

[Jerry 5TJ]

The gas discharge display of the King Sliver Crown series do fail.  You can find replacement displays on Ebay from time to time.   Expect to pay $100 to $300 for one that is warranted as operating.   They are easy enough to swap out -- most are in pin sockets and need no soldering -- but you do need to be careful of the delicate leads.  A good electronics tech can do it with no drama.

[N601RX]

On some of the King stuff the faceplate can be removed without removing the knobs, but some require removing the knobs 1st. Many of the knobs are held on by what looks like a set screw but if you look closer you will see that it is not an Allen wrench head. It's called a Bristol Spline. Wrenches can be found here.

http://www.bristolwrench.com/bristol-spline-wrench.html

[Piloto]

To clean the pads on the glass display I use a Q tip wetted with contact cleaner. A pencil eraser will work also but too much force can take out the pad. Whenever handling the PCB with power keep your hands off. There is high voltage on the display contacts.

José

[AndyFromCB]

To clean the pads on the glass display I use a Q tip wetted with contact cleaner. A pencil eraser will work also but too much force can take out the pad. Whenever handling the PCB with power keep your hands off. There is high voltage on the display contacts.

José

 

Yeah,

 

Even with no power applied to the unit, you can get quite a nice shock and little burns on your hands, or worst. It's amazing how much energy the little capacitors can store…More of less, anything with old school, pre LCD displays will have high power section. The CRT avionics units, even when disconnected, can actually kill you for quite a few days after disconnecting from power…

[ryoder]

Wow. I have the same unit and love it. They are 1000 smackeroos used on eBay.

Sent from my iPad using Tapatalk

[N231BN]

If it comes to replacement, remember the KN64 shares a tray and wiring with the KN62. The only difference is transmit power. I went from a 62 to a 64 in my 231 and have no problems.