Notices
Mercedes Tech Talk Discuss general technical questions and issues about your Mercedes-Benz. Moderated by a certified MB Tech.
Sponsored by:
Sponsored by:

Command Screen Replacement Issues

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Sep 30, 2018 | 09:27 PM
  #1  
bapdco's Avatar
Thread Starter
Junior Member
 
Joined: Aug 2018
Posts: 37
Likes: 3
GL450, E350 Cabriolet
Command Screen Replacement Issues

I just replaced a fading LCD screen on my Command radio and 3 days later the screen went blank (white). Any idea what might cause this?
Reply
Old Oct 12, 2018 | 06:45 PM
  #2  
ot1's Avatar
ot1
Super Member
 
Joined: Apr 2007
Posts: 633
Likes: 48
From: USA
2006 E320 CDI
Originally Posted by bapdco
I just replaced a fading LCD screen on my Command radio and 3 days later the screen went blank (white). Any idea what might cause this?
hopefully it should be under warranty
Reply
Old Oct 12, 2018 | 11:36 PM
  #3  
bapdco's Avatar
Thread Starter
Junior Member
 
Joined: Aug 2018
Posts: 37
Likes: 3
GL450, E350 Cabriolet
Vendor who sold the LCD screen said it must be a faulty radio and not his screen. No returns, no refunds. I just want to find out what caused it.
Reply
Old Oct 14, 2018 | 10:50 PM
  #4  
ot1's Avatar
ot1
Super Member
 
Joined: Apr 2007
Posts: 633
Likes: 48
From: USA
2006 E320 CDI
Originally Posted by bapdco
Vendor who sold the LCD screen said it must be a faulty radio and not his screen. No returns, no refunds. I just want to find out what caused it.
was it new or a used screen? The problem is you probably dont have a scope to look at the connector pins anyway also what was wrong with your original screen? Was it also white? If your original showed any characters on it before it was replaced reinstall it and see if it looks the same.also i have never replaced a screen, so please tell me how many pins are on the connector. Does it mate with the radio via a ribbon cable? If you paid for it on ebay and paypal you could have resolution. How many hours did you put on it before it went white?

Last edited by ot1; Oct 14, 2018 at 10:53 PM.
Reply
Old Oct 14, 2018 | 10:59 PM
  #5  
bapdco's Avatar
Thread Starter
Junior Member
 
Joined: Aug 2018
Posts: 37
Likes: 3
GL450, E350 Cabriolet
Original screen was tossed. When this "new" screen worked perfectly (for 3 days) I didn't see a need to keep the old one. The old screen had faint images but was never "white". It's actually quite simple to replace the LCD screen (although I had a local audio store do it for me). It connects with a few different ribbon cables. Took less than an hour. Does anyone know if there is a specific power amp or converter used on these screens? I decided to scrap it and install aftermarket but my source said he's not able to get all the necessary parts for my '11 GL450. Everything still functions on the radio,,,,,,,I just can't see the screen.
Reply
Old Oct 15, 2018 | 12:33 AM
  #6  
ot1's Avatar
ot1
Super Member
 
Joined: Apr 2007
Posts: 633
Likes: 48
From: USA
2006 E320 CDI
Originally Posted by bapdco
Original screen was tossed. When this "new" screen worked perfectly (for 3 days) I didn't see a need to keep the old one. The old screen had faint images but was never "white". It's actually quite simple to replace the LCD screen (although I had a local audio store do it for me). It connects with a few different ribbon cables. Took less than an hour. Does anyone know if there is a specific power amp or converter used on these screens? I decided to scrap it and install aftermarket but my source said he's not able to get all the necessary parts for my '11 GL450. Everything still functions on the radio,,,,,,,I just can't see the screen.
too bad you didnt hang onto the old screen longer at least a month, electronics can always have issues when first burning in.. did the audio shop wear grounded static wrist bands? Or did he wear nitrile gloves ? Does the merchant sell screens or was this one he happened to have around. So these screens are back li with fluorescent lighting, there will be a driver chip that is heat sinked, to power the back lighting, but i suspect its a data issue, pull the ribbon cables use an electronic wooden qtip dipped in 90% alcohol or electronics cleaner to clean the contacts, if the ribbon cables have connector clamps make sure they are seated , tobacco on fingers ruins connectors.
Reply
Old Oct 15, 2018 | 12:46 AM
  #7  
bapdco's Avatar
Thread Starter
Junior Member
 
Joined: Aug 2018
Posts: 37
Likes: 3
GL450, E350 Cabriolet
I didn't buy the screen from the installer and I don't know if they used anti-static bands or nitrile. I'll check with them this week and ask them to check the ribbon cables and clean them. Thanks for the thoughts,,,,
Reply
Old Oct 15, 2018 | 01:00 AM
  #8  
ot1's Avatar
ot1
Super Member
 
Joined: Apr 2007
Posts: 633
Likes: 48
From: USA
2006 E320 CDI
Originally Posted by bapdco
I didn't buy the screen from the installer and I don't know if they used anti-static bands or nitrile. I'll check with them this week and ask them to check the ribbon cables and clean them. Thanks for the thoughts,,,,
yes i realize the installer wasnt the seller, my angle was attempting to recover from the seller via paypal. You didnt explain who the seller was does he have another s reen? New screens are warrantied by the manufacturer. You need to be able to watch the installer to make sure they are adept at handling exposed eletronics.
Reply
MB World Stories

The Best of Mercedes & AMG

story-0

6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

 Verdad Gallardo
story-1

Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

 Verdad Gallardo
story-2

Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

 Verdad Gallardo
story-3

8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

 Verdad Gallardo
story-4

Flawlessly Restored Mercedes 190E Evo II Heads to Auction

 Verdad Gallardo
story-5

Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

 Verdad Gallardo
story-6

Mercedes EQS Gets A Major Update: Everything You Need to Know

 Verdad Gallardo
story-7

5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

 Verdad Gallardo
story-8

Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

 Verdad Gallardo
story-9

10 Most Reliable Mercedes-Benz Models You Can Buy Used

 Verdad Gallardo
Old Oct 15, 2018 | 10:17 AM
  #9  
bapdco's Avatar
Thread Starter
Junior Member
 
Joined: Aug 2018
Posts: 37
Likes: 3
GL450, E350 Cabriolet
The seller was GermanAudioTech on Ebay. He has nearly 100% positive feedback. He won't accept the screen in return for a refund because I said it "might" have been the fault of the radio. Neither has been confirmed. He believed I used his screen to diagnose my radio,,,,,which was not true.
Reply
Old Oct 15, 2018 | 11:02 AM
  #10  
ot1's Avatar
ot1
Super Member
 
Joined: Apr 2007
Posts: 633
Likes: 48
From: USA
2006 E320 CDI
Originally Posted by bapdco
The seller was GermanAudioTech on Ebay. He has nearly 100% positive feedback. He won't accept the screen in return for a refund because I said it "might" have been the fault of the radio. Neither has been confirmed. He believed I used his screen to diagnose my radio,,,,,which was not true.
you dont want a refund you want it replaced, big difference. The fluorescent back lighting ages, which was apparent on your original screen, your head unit didnt kill the new screen. There is the slim possibility that a ribbon cable came loose. Tell the german guy you want the screen repaired covered by warranty. Was it shipped in an electrostatic bag ? And sold as NEW?
Reply

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


You have already rated this thread Rating: Thread Rating: 0 votes,  average.


All times are GMT -4. The time now is 03:45 AM.

story-0
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

Slideshow: Not every Mercedes design becomes timeless, some feel stuck in the era they came from.

By Verdad Gallardo | 2026-05-12 18:09:07


VIEW MORE
story-1
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

Slideshow: Yes, Mercedes built manual cars, and some of them are far more interesting than you'd expect.

By Verdad Gallardo | 2026-05-02 12:36:58


VIEW MORE
story-2
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.

By Verdad Gallardo | 2026-04-29 11:19:28


VIEW MORE
story-3
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

Slideshow: Before curves took over, Mercedes mastered the art of the straight line, and some of those shapes still look right today.

By Verdad Gallardo | 2026-04-25 12:05:49


VIEW MORE
story-4
Flawlessly Restored Mercedes 190E Evo II Heads to Auction

Slideshow: The 190E Evolution II shows how a homologation necessity became a six-figure collector icon.

By Verdad Gallardo | 2026-04-22 17:53:47


VIEW MORE
story-5
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

Slideshow: Mercedes is turning one of its core nameplates electric, and the details show just how serious this shift is.

By Verdad Gallardo | 2026-04-21 13:58:06


VIEW MORE
story-6
Mercedes EQS Gets A Major Update: Everything You Need to Know

Slideshow: Faster charging, longer range, and a controversial steer-by-wire system define the latest evolution of Mercedes-Benz EQS.

By Verdad Gallardo | 2026-04-15 10:35:34


VIEW MORE
story-7
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

Slideshow: These overlooked Mercedes-Benz models never got the spotlight, but they quietly delivered more than most remember.

By Verdad Gallardo | 2026-04-13 19:35:45


VIEW MORE
story-8
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

Slideshow: A well-used 1991 Mercedes-Benz 300D with more than one million miles is now looking for a new owner, and it still appears ready for more.

By Verdad Gallardo | 2026-04-10 10:05:15


VIEW MORE
story-9
10 Most Reliable Mercedes-Benz Models You Can Buy Used

Slideshow: From bulletproof sedans to surprisingly tough SUVs, these Mercedes models proved that the three-pointed star can go the distance.

By Verdad Gallardo | 2026-04-08 09:55:49


VIEW MORE