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Old 02-24-2016, 01:53 PM   #1
Cowspoo
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What happened to my display?

Started it to see this, it's not running rough. It's not in limp mode. Drives perfect. Restarted and it's back to normal.
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Old 02-24-2016, 09:00 PM   #2
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Mines been soft failing like that for the last month too.

I believe its the cold weather that is causing the pixels to not really work, everything seems to fix itself once it gets warm in the car.
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Old 02-24-2016, 09:54 PM   #3
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I was thinking that he dim display was connected to this event as well. This was full brightness, while for the past month it's been about half luminosity.

Thanks for the reply.
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Old 02-24-2016, 10:22 PM   #4
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I agree with Nicker, when i leave mine outside over night when its mid to low 30's the pixels seem to go on the odo display and the radio but always come back when its warmed up

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Old 02-25-2016, 07:47 AM   #5
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The picture is an indication that there's a bad connection on the circuit board that holds the display. Metal shrinks when it gets cold so I bet that there's a bad solder joint.

Solution is to pull the gauge cluster (disconnect the battery before you start), and to examine the board with a magnifying glass. Then, using a low wattage soldering iron (15 watts) and some fine solder, reflow the suspect solder joints.

Looking at the picture it appears that the LCD assembly is getting power. The issue is that one or more of the "addressing" conductors aren't working properly.

"Addressing": each pixel on an LCD panel has an address. When a pixel is supposed to be illuminated the display controller sends power to the address.
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Old 02-25-2016, 08:24 PM   #6
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Aliens are trying to send you encoded messages. Just ignore them and they'll go away soon enough.
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Old 02-28-2016, 01:22 PM   #7
Cowspoo
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Quote:
Originally Posted by markusmarkus View Post
The picture is an indication that there's a bad connection on the circuit board that holds the display. Metal shrinks when it gets cold so I bet that there's a bad solder joint.

Solution is to pull the gauge cluster (disconnect the battery before you start), and to examine the board with a magnifying glass. Then, using a low wattage soldering iron (15 watts) and some fine solder, reflow the suspect solder joints.

Looking at the picture it appears that the LCD assembly is getting power. The issue is that one or more of the "addressing" conductors aren't working properly.

"Addressing": each pixel on an LCD panel has an address. When a pixel is supposed to be illuminated the display controller sends power to the address.
Super helpful, that would also follow with the display working properly but displaying at or around half brightness? I just learned how to solder in the fall, this will be fun.

I think if I disconnect the battery - I won't have the yellow dot from tampering, correct?
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Old 02-29-2016, 08:35 AM   #8
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The brightness issue is most likely caused by either low voltage or a bad LED. These displays are illuminated from the rear by LEDs. Reflow soldering may help but I'd check the voltage getting to the display from the lighting control module (LKM).

The yellow tampering dot will not rear its ugly head. The dot appears when there's a mismatch between the LKM and the cluster. Mileage is stored in the LKM.
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Old 03-02-2016, 04:31 PM   #9
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Very understandable. Thank you. I also keep getting a CEL from low voltage to my o2 2-1. I'll have my alt and battery checked. My battery is at 12.9-13.1v when running, has never had startup problems though. Still have the original somehow.
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Old 03-02-2016, 04:36 PM   #10
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Running voltage should be 13+volts
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