The light for the speedo is bleeding to the right. As such I am unable to view my speed unless I am in the single digits or over 75. This pic explains it better.

Any ideas how to fix. Thanks!

 

My '88 display was too dim earlier this year and had to dismantle the cluster to service it, I believe you will need to do the same to see why the problem in that are.
If you decide to get into it here is a good reference: http://batee.com/corvette/dcrg/index.htm

 

I fixed a similar issue by changing all the light bulbs in the cluster. Running LEDs now.
Also grabbed a small container of black touch-up paint, the kind that has the little brush in it.
Cleaned the sides of each LCD panel, cleaned the surfaces on the light carriers, and painted the sides of the LCD panels with the touch up paint. Gave it a few coats until I could no longer see light going past the sides, when held up to light.


This is the final product:



You could also have polarizer issues, or worn film in the inside.

 

I'd be reserved on saying that until the OP provides photos of the dash cluster off / lcd panes removed.

Regardless, if you need anything to finish this, I have tons of cluster parts laying around.
And replacement polarizer can be purchased from polarization.com

Let me know.

 

Thanks for all the replies. I will be removing the cluster this weekend and will be trying the suggestions.

I am not very familiar with polarizer issues, how will I know if that is my problem?

 

The polarizing film should be an even dark tone across the entire surface.

 

After removing the dash, I believe that the issue is polarizing film as discussed. Btw, I would never have been able to remove the dash without your help and the help of these forums!!!

This is a pic from the RPM gauge side:



And here is the speedo side, with what I believe is film issues:



Does everyone agree?? If so is replacement difficult? Im still learning alot about my C4 and disassembly...

 

I repolarized my last year and it worked out great. It looks like we're both in Tampa so let me know if you need help.

 

how you repolarized???????

 

Yep That certainly looks like your polarizing film is done for.

It's not extremely difficult, I'll get some photos together. Give me a few mins.

 

To replace your polarizing film, you will need to first acquire aircraft grade polarizing film from http://www.polarization.com/polarshop/

You will also need patience, glass cleaner, and a heatgun.

NOTICE: THERE ARE MANY "GOTCHAS" WHEN DISASSEMBLING AND REASSEMBLING THE DIGITAL DASH CLUSTER! ANY FAILURE TO ATTENTION TO DETAIL WILL RESULT IN THE LOSS OF AN LCD PANEL AND A HEADACHE!

I would STRONGLY recommend that you completely read thru the documentation regarding the cluster at http://batee.com/corvette/dcrg/index.htm

After you have read the aforementioned article, and have disassembled your ailing cluster, retrieve your LCD panels. I'd suggest to do them all while you have the thing opened.

To remove the polarizing film, apply heat lightly to the filmed surface of the LCD panel, work from one side up (start at a corner). Not too much heat in one particular area, or you will cook the panel. Keep the heat moving.

Firmly hold the LCD panel, and begin to peel back the existing polarizing film. If it ever gets to a point where it wants to tear, instead of peel off, or becomes difficult to peel back, apply more heat. Be cautious the whole way. Too much force will break the panel.

Once all the film is removed, let the panel cool. After it's cooled, take a nice, glass friendly cloth, and your glass cleaner, and give the front facing side a good clean, and remove any leftover adhesive residue on the glass. It could also be a good idea to use black touch up paint on the back side / sides of the panel, if your paint is starting to break loose.

This should be your result:


Installation of the polarizing film is easy. Cut to fit, apply. Re-assemble cluster. Done!

Btw. I'm in no way responsible for any damage you cause while performing this procedure, i'm just trying to assist in the process of your repair.

I will stress this one more time: Triple, no, quadruple check your work, to ensure everything is 100% in place on removal, changing the polarizing film, and reassembly.

A visual aide:


Hope this helps!

 

pealed (scraped) off and re-applied new tint from polarization.com

 

This is correct. One more thing, be sure to install the new film correctly. Tuning it 90 drgrees will help to insure you have it correct prior to cutting and installation. I learned the hard way!

 

Casshern - Thanks for the great how-to!

I plan on adding this project to my to-do list for the new year and will update everyone accordingly. Thanks everyone!!!

 

i tried the repolarize method...after i bought enough material to do all three, figured out which way to orient it on the glass (screwed up once by cutting wrong) and breaking one of the lcds when peeling it off I didn't save much cash and spent allot of time! ended up buying a new one on ebay to replace the one i broke..user ID is witchcityeng who sells them $99 each

 

NP Just make sure to utilize tons of caution.

 

I'm a bit late to this thread but I have a couple of questions. Does the polarizing film have an adhesive back or do you need to apply it? Also, Exactly how do you determine the proper orientation?

 

The film is self adhesive. As far as the orientation, place the film over the LCD without removing the backing and exposeimg the adhesive. Now turn the sheet of tint 90 degrees while back lighting it. You Won't want To see an orange background with thin black digits.