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Old 02-18-2014, 11:26 PM   #1
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radio display pixals fading on sides 2010 wrangler

Hey everyone, newbie here... the pixels on the stock radio display in my 2010 wrangler seem to be fading on the sides (left/right edges only). It seemed to be fine for a day or two but then it dimmed again today. Day or night, head lights on or off, it doesn't matter, it still does it! Anyone else encounter this problem? Any suggestions on whats causing it? Any help would be appreciated! Thanx!

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Old 02-19-2014, 12:37 AM   #2
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It's a problem with the HU unit display, or basically the HU. I dropped my removable face plate, a few times, and I encountered the same problem. Certain pixels were dim or they disappeared entirely. I took it in for repair and they replace the face plate, problem resolved. It doesn't take much jarring or voltage spikes to cause such problems. Do you turn off your HU, before turning off the vehicle? Other Wrangler owners have had problems with their AC because they don't turn off the AC system and fans before exiting the vehicle. When you start up the car, a spike can burn out, or damage the display.

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Old 02-19-2014, 06:14 AM   #3
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I'm assuming by HU you mean "head unit" correct? No I don't turn of my heat/ac fans off before I turn off the vehicle for the day, I have auto start and I'm Michigan which has been really freakin' cold so I just keep it on so my jeep warms up better... never thought of it to be honest. You said you took it to the stealership and had yours replaced, was hoping not to have to go that route haha, how much did that set you back? Thanks so much for the advice!
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Old 02-19-2014, 05:28 PM   #4
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Originally Posted by scotty dawg View Post
I'm assuming by HU you mean "head unit" correct? No I don't turn of my heat/ac fans off before I turn off the vehicle for the day, I have auto start and I'm Michigan which has been really freakin' cold so I just keep it on so my jeep warms up better... never thought of it to be honest. You said you took it to the stealership and had yours replaced, was hoping not to have to go that route haha, how much did that set you back? Thanks so much for the advice!
Yes, HU is head unit. I have a aftermarket HU, and my importer is local, and gives free repairs/part replacement. So,mine was free, no questions asked.

You might try going to the dealership and discussing your options with them. They may have an authorized repair store, or they might replace it as defective. It probably was surges, that did that over time. Especially since your AC is also stealing power on start up. You have a lot of jolts during start up. Electronics are very delicate. Good Luck.
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Old 02-19-2014, 07:10 PM   #5
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Ok Chas, thx, I'll check with the guy at the dealer that sold it to me... I've only put 18,000 miles on it since I bought it so maybe he can help me out. Thanks again for all your advice!
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Old 02-19-2014, 08:10 PM   #6
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Scotty

As you probably are realizing, your options are very limited. Either warranty replacement or after market.

There may be repair options, but they will be from scrap/salvage operations. There is no organized, after sale repair as there once was, years ago.

Good luck.

Chas;

This is not a personal attack so don't take it as such. I have done repair on equipment using LCD displays since they began and the planar display is not susceptible to voltage spikes or surges as you allege. Some of the support circuitry such as decoders and line drivers are. Their failure would result in entire lines of pixels, either vertical or horizontal missing from the screen.

The symptoms described can be from several causes.

Heat damage of the planar display causing deterioration of the liquid crystal matrix.

Mechanical damage causing shift of the polarizing layer.

Heat damage or just normal failure over time of the mass termination connection between the planar display and the driver circuit board.

Note that all LCD displays will eventually fail in this last example. No exceptions. This failure mode is the most likely scenario in Scottys case.


Phil
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Old 02-19-2014, 08:38 PM   #7
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Scotty

As you probably are realizing, your options are very limited. Either warranty replacement or after market.

There may be repair options, but they will be from scrap/salvage operations. There is no organized, after sale repair as there once was, years ago.

Good luck.

Chas;

This is not a personal attack so don't take it as such. I have done repair on equipment using LCD displays since they began and the planar display is not susceptible to voltage spikes or surges as you allege. Some of the support circuitry such as decoders and line drivers are. Their failure would result in entire lines of pixels, either vertical or horizontal missing from the screen.

The symptoms described can be from several causes.

Heat damage of the planar display causing deterioration of the liquid crystal matrix.

Mechanical damage causing shift of the polarizing layer.

Heat damage or just normal failure over time of the mass termination connection between the planar display and the driver circuit board.

Note that all LCD displays will eventually fail in this last example. No exceptions. This failure mode is the most likely scenario in Scottys case.


Phil
Okay, thank you for your input. It has just been my experience and common knowledge that voltage spikes or surges can damage any electronic equipment from computers to LCD monitors, and there are threads here talking about such surges ruining AC and heater systems. Pixels burn out or become faulty on LCD panels all the time, and most people don't watch their LCD TV's outside where heat can harm them. Although, I do agree that heat damage could also be a factor. In my case, I dropped mine too many times. I remember plugging it in afterwards, and some of the pixels were gone. I dropped it a couple more times, and more pixels were gone. So, in my experience there are many factors, where heat could definitely be one of them.

As for after sales repair, my particular HU, does have one. I know because I went there. They had ten or more electronic technicians working in an electronic import warehouse, supporting hundreds of electronic devices that they import. I also know that IPOD's have after market authorized repair stores. Mopar electronics? IDK. This is why I suggested the dealership. The OP will definitely know his options after he talks with them.
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Old 02-19-2014, 08:57 PM   #8
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Your observed symptoms of your problem and Scottys are not related. Loss of pixels on LCD displays is common and in fact with some low to mid quality displays / monitors, is the norm. And not always an allowed warranty claim.

Fading is another matter entirely and relates either to polarization problems or drive level to the pixel matrix. The display matrix is so well isolated that a voltage surge would need to be catastrophic, on the level of a direct lightning strike. Safe to say, there would be other concerns aside from pixel loss.

There is a great business opportunity to repair automotive electronics if only the owners of the intellectual property would loosen up control and allow third party access. Entertainment electronics companies know this, thus your positive experience. Not so with automotive companies.

Phil

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