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Dim Yamaha round gauges

Old 11-22-2013, 05:17 PM
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Question Dim Yamaha round gauges

Hey Gang.

My Wife and I just bought a cream puff 2003 Grady-White 209 with a 2003 F200AET (yup, Euro model… more on that later) and we're SUPER excited!

Buuuuuuut… Both the Yammi Tach and Speedo (round style, not Cmd Link), are pretty sun crazed, and the LCDs are almost invisible. The backlights seem to working just fine, and have a nice green glow.

I've done a ton of searching and have tried everything I've found so far, such as:
- Checking/cleaning all grounds from the instruments and harnesses back to the motor.
- Fully charging both batteries.
- Attempting to adjust contrast or brightness. (Can't even see the displays well enough to tell if I'm pushing the right buttons or not)

So, unless I'm missing something silly, I think I might be looking at new (NOT cheap) instruments on my new boat…

Any nifty tricks that might help, or should I throw up a WTB post in the Trading Dock before I resort to E-Bay and Boats.net?
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Old 11-23-2013, 03:54 AM
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Going to wax the boat since I can't read the gauges bump.
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Old 11-23-2013, 03:58 AM
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Try novus three step plastic cleaner or even 3m imperial compound. If neither works you can usually find decent deals on used tachs and speedo gauges in ebay.
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Old 11-23-2013, 05:14 AM
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replace it. rather common problem.
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Old 11-23-2013, 05:18 AM
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The LCD is sunburnt. Has nothing to do with the lens. Replacement is your only good option. They can be had fairly cheap on eBay or sometimes the for sale section here.
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Old 11-23-2013, 05:31 AM
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Thanks, fellas. That's what I figured.

TO THE INTERWEBS!!!!

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Old 11-23-2013, 05:56 AM
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we dont use dem gauges down here in da bayou anyway tboy

dont worry yousef no mo
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Old 11-23-2013, 07:27 AM
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Originally Posted by Pebblenoggin View Post
Thanks, fellas. That's what I figured.
What was it that you figured? That the LCD itself was sunburnt or that the plexiglass cover was sun crazed? Or both?

Crazing of the plexiglass cover is a common problem. Many gauges have been resurrected using products designed just for this problem.

A headlight restoration kit from your local auto parts store will many times bring an old gauge back to life. It might be worth a try. What have you got to lose? For example:

http://www.autogeek.net/3m-headlight...FWRk7AodNxIA8g


Tape off everything on the gauge except the plexiglass.

Get the crazing of the plexiglass taken care of and you will then be in a better position to see what the condition of the LCD is.

You might also want to check the voltage to the gauge. A reduction is voltage can make the display dimmer than it would normally be. You should see ~ 12.7 volts to the gauge with the motor off and more or less 14.5 volts with the motor running.

Let us know what happens. Good luck.
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Old 11-23-2013, 08:36 AM
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Thanks Jethro.

The crazing isn't bad at all actually, and I wasn't worried about it at all when I bought it to be honest. I was ignorant to the fact that LCD displays can fade in the sun. I've always had analog needles or newer Command Link stuff.

At this point, I'm fairly certain the LCDs are sunburnt since they are virtually unreadable. At night, the green backlight is nice and bright, but no LCD readout at all. In the daylight, I can BARELY make out the Tach numbers and that's about it.

I'll check the voltage this afternoon (If I can find my Multimeter…) and see what I come up with.
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