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97 NAS 90 ODO Repair

2.2K views 17 replies 9 participants last post by  uc4me  
#1 ·
Just an FYI, my (digital) odo display was sporadic, so I sent to Nichols Speedometer and Instrument Repair in Greensboro NC. Cost me around $85 to have the display replaced. Around $25 round trip shipping. Mileage unchanged.
 
#3 ·
Dumb question here, how much of a pain was it to pull the odo? I need to have my display replaced, as well.
 
#4 ·
Super simple.
Undo the four screws that hold the dash instrument cluster and pull out.
Unplug the speedo.
The speedometer is held in place with a plastic piece that you unscrew, i recall mine being white. As it loosens, it then frees up from the dash cluster.
All done.
 
#9 ·
ECR directed me to North Hollywood Speedometer to fix mine. They charged about $250 to fix the ribbon. They also replaced the glass for an additional $30. I suppose worse case scenario you could buy glass/additional parts from them.


Sent from my iPhone using Tapatalk
 
#10 ·
I ordered this repair ribbon kit from AKspeedo.

A couple of notes to add...
they ask you if you want a "T bar" when you order. I had no idea what this was and figured it was important to do the job. It's actually a long T shaped soldering bit for your soldering iron. I think it makes removing the old ribbon easier, and soldering in the new ribbon easier. But... there are no other instructions with the kit. It comes with the ribbon taped to a business card sized paper and the tool in a pouch. I have emailed them for further instructions about using the T bar. The T bar comes with some rubber pieces as well. I'll try to post a pic of the kit ASAP.
 
#11 ·
1. T is needed as this is heat bonded on.
2. No T / heat needed to remove old ribbon, just lift off and clean old glue.
3. The T will go in to a $5 soldering 40w iron from Amazon:

https://www.amazon.com/gp/aw/d/B07313G8FT?psc=1&ref=yo_pop_mb_pd_title

4. Line up the ribbon end over the LCD screen connection point, with the rubber over the end of the T, apply heat for 8 seconds.

I will post photos once at home.
 
#12 ·
It looks to me (looking under a loop scope) that once I remove the old ribbon there won't be any connection points. It looks like a plain clear piece of glass and the ribbon is just stuck on it.

Do I leave anything on the glass, or pull it all off?
 
#16 ·
Razorblade and non-caustic goo gone type cleaner is what I use.


Here are the pics:


Again:
-40w Iron, T post, and rubber pad inserted on T face
-Pull off old ribbon, clean gently
-Align new ribbon with thicker end not on the glass, as the thicker end connects to the clip face
-8s of gentle pressure for ribbon over LCD to heat bond.


Reassemble. The video is good for all but the attachment of the ribbon. Again, order the T always and a few extra ribbons. $20-30 including the 40w iron from Amazon, ribbon and T for a $300+ repair elsewhere.
 

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#17 ·
Follow up notes:

Installed successfully! Not easily!

After you pull the old ribbon off, you use a credit card to scrape away the old glue completely as per AK speedo's instructions..

AK also said, if you look carefully you can see the lcd contact pads by angling the glass in bright light just the right way, or mark them before removing the original cable, so you fit in the same place.

The yellow part on the new strip is insulation. You cannot solder this yellowish part to the glass.
After 2 failed attempts and removals using the same new ribbon, I was still able to use a part of the new ribbon that didn’t have the insulation on it and get it working.

Lining up the new ribbon and soldering is not easy, so tape down the LCD

Next time I would order 2 new ribbon pieces just in case I needed to do it 2 times (like I did).

Also, you have to have the tool. No way to do this without it.

Be sure to pay attention to which way and where the soldered parts are before pulling the old off. Take a few pics before you do anything to the original ribbon.

Working great! Thanks for the help xjahx!