Nav screen cleaned - now dead
Thread Starter
Member
Joined: Jun 2006
Posts: 76
Likes: 4
From: Dallas
2014 E350 Cab
Nav screen cleaned - now dead
So while I'm pondering the 5k spend for the ECU/wireharness oil issue (see this thread https://mbworld.org/forums/e-class-c...hat-s-fix.html), I got another problem.
I've got a lot of scratches and marks in the anti-glare clear coat of my NAV screen over time and bad car washings. I did some searching and found that regular Windex would take the coating off. So I got a rag and went to it. Comes off scary easy, but I could never get the edges. So I took the plastic surround off from around the screen to get closer. That was shockingly simple - the bezel just pulled away with my fingers.
I was very careful not to spray directly on the screen (although the marks on the screen look like someone's done that before). But I did go all the way to the metal edge. When I was done it looked great, worked wonderfully. Drove it for about 30 minutes without issue.
But then I left the car and went into the office for a few hours. When I started it up after that, I had nothing but technicolor pinstripes vertically down the screen. Then after about 20 tries of all kinds of things from engine off, wait 10 minutes to just press the button and turn off the system, etc., I could see the screen "strobe" for half a second and be correct, then be blank for the rest of the time. Then I tried driving around, and after a while the left 1/4 of the panel was occasionally flashing, with the rest of the screen blank.
When I got home I took the screen completely out (it's two wire connectors and two screws - really easy again). I then took the screen assembly completely apart down the circuit board, removing the ribbon cables, bezel, etc. - no wet spots, no Windex smell, no residue marks, nothing. Just to be sure though, I dried everything LIGHTLY with a hair dryer and left it to sit overnight.
I have fixed a ton of iPhones, so relatively speaking, this was really easy stuff, and I am pretty confident the disassembly did no damage. But when I reassembed and reinstalled the screen the next day, just dead blackness. Nothing at all.
So I guess I need a new screen - one is already on order from the bay ($80 plus shipping - why not?). BUT before I go too far with this - is there a fuse or something that affects just the screen? The radio, phone, SiriusXM, CD, bluetooth all work fine (I have to use the display between the gauges, though). It's just the screen that is dead. I've never seen a phone screen just completely blank out like this from what had to be a tiny amount of liquid, so I'm dubious and thinking it might be something else. I checked the fuse for the head unit - it's fine. I don't see a fuse for just the screen on any of the diagrams, but I may be looking for the wrong word.
Thanks
Thanks!
I've got a lot of scratches and marks in the anti-glare clear coat of my NAV screen over time and bad car washings. I did some searching and found that regular Windex would take the coating off. So I got a rag and went to it. Comes off scary easy, but I could never get the edges. So I took the plastic surround off from around the screen to get closer. That was shockingly simple - the bezel just pulled away with my fingers.
I was very careful not to spray directly on the screen (although the marks on the screen look like someone's done that before). But I did go all the way to the metal edge. When I was done it looked great, worked wonderfully. Drove it for about 30 minutes without issue.
But then I left the car and went into the office for a few hours. When I started it up after that, I had nothing but technicolor pinstripes vertically down the screen. Then after about 20 tries of all kinds of things from engine off, wait 10 minutes to just press the button and turn off the system, etc., I could see the screen "strobe" for half a second and be correct, then be blank for the rest of the time. Then I tried driving around, and after a while the left 1/4 of the panel was occasionally flashing, with the rest of the screen blank.
When I got home I took the screen completely out (it's two wire connectors and two screws - really easy again). I then took the screen assembly completely apart down the circuit board, removing the ribbon cables, bezel, etc. - no wet spots, no Windex smell, no residue marks, nothing. Just to be sure though, I dried everything LIGHTLY with a hair dryer and left it to sit overnight.
I have fixed a ton of iPhones, so relatively speaking, this was really easy stuff, and I am pretty confident the disassembly did no damage. But when I reassembed and reinstalled the screen the next day, just dead blackness. Nothing at all.
So I guess I need a new screen - one is already on order from the bay ($80 plus shipping - why not?). BUT before I go too far with this - is there a fuse or something that affects just the screen? The radio, phone, SiriusXM, CD, bluetooth all work fine (I have to use the display between the gauges, though). It's just the screen that is dead. I've never seen a phone screen just completely blank out like this from what had to be a tiny amount of liquid, so I'm dubious and thinking it might be something else. I checked the fuse for the head unit - it's fine. I don't see a fuse for just the screen on any of the diagrams, but I may be looking for the wrong word.
Thanks
Thanks!
Member
Joined: May 2016
Posts: 182
Likes: 34
From: Georgia
2011 E550 Cab
So while I'm pondering the 5k spend for the ECU/wireharness oil issue (see this thread https://mbworld.org/forums/e-class-c...hat-s-fix.html), I got another problem.
I've got a lot of scratches and marks in the anti-glare clear coat of my NAV screen over time and bad car washings. I did some searching and found that regular Windex would take the coating off. So I got a rag and went to it. Comes off scary easy, but I could never get the edges. So I took the plastic surround off from around the screen to get closer. That was shockingly simple - the bezel just pulled away with my fingers.
I was very careful not to spray directly on the screen (although the marks on the screen look like someone's done that before). But I did go all the way to the metal edge. When I was done it looked great, worked wonderfully. Drove it for about 30 minutes without issue.
But then I left the car and went into the office for a few hours. When I started it up after that, I had nothing but technicolor pinstripes vertically down the screen. Then after about 20 tries of all kinds of things from engine off, wait 10 minutes to just press the button and turn off the system, etc., I could see the screen "strobe" for half a second and be correct, then be blank for the rest of the time. Then I tried driving around, and after a while the left 1/4 of the panel was occasionally flashing, with the rest of the screen blank.
When I got home I took the screen completely out (it's two wire connectors and two screws - really easy again). I then took the screen assembly completely apart down the circuit board, removing the ribbon cables, bezel, etc. - no wet spots, no Windex smell, no residue marks, nothing. Just to be sure though, I dried everything LIGHTLY with a hair dryer and left it to sit overnight.
I have fixed a ton of iPhones, so relatively speaking, this was really easy stuff, and I am pretty confident the disassembly did no damage. But when I reassembed and reinstalled the screen the next day, just dead blackness. Nothing at all.
So I guess I need a new screen - one is already on order from the bay ($80 plus shipping - why not?). BUT before I go too far with this - is there a fuse or something that affects just the screen? The radio, phone, SiriusXM, CD, bluetooth all work fine (I have to use the display between the gauges, though). It's just the screen that is dead. I've never seen a phone screen just completely blank out like this from what had to be a tiny amount of liquid, so I'm dubious and thinking it might be something else. I checked the fuse for the head unit - it's fine. I don't see a fuse for just the screen on any of the diagrams, but I may be looking for the wrong word.
Thanks
Thanks!
I've got a lot of scratches and marks in the anti-glare clear coat of my NAV screen over time and bad car washings. I did some searching and found that regular Windex would take the coating off. So I got a rag and went to it. Comes off scary easy, but I could never get the edges. So I took the plastic surround off from around the screen to get closer. That was shockingly simple - the bezel just pulled away with my fingers.
I was very careful not to spray directly on the screen (although the marks on the screen look like someone's done that before). But I did go all the way to the metal edge. When I was done it looked great, worked wonderfully. Drove it for about 30 minutes without issue.
But then I left the car and went into the office for a few hours. When I started it up after that, I had nothing but technicolor pinstripes vertically down the screen. Then after about 20 tries of all kinds of things from engine off, wait 10 minutes to just press the button and turn off the system, etc., I could see the screen "strobe" for half a second and be correct, then be blank for the rest of the time. Then I tried driving around, and after a while the left 1/4 of the panel was occasionally flashing, with the rest of the screen blank.
When I got home I took the screen completely out (it's two wire connectors and two screws - really easy again). I then took the screen assembly completely apart down the circuit board, removing the ribbon cables, bezel, etc. - no wet spots, no Windex smell, no residue marks, nothing. Just to be sure though, I dried everything LIGHTLY with a hair dryer and left it to sit overnight.
I have fixed a ton of iPhones, so relatively speaking, this was really easy stuff, and I am pretty confident the disassembly did no damage. But when I reassembed and reinstalled the screen the next day, just dead blackness. Nothing at all.
So I guess I need a new screen - one is already on order from the bay ($80 plus shipping - why not?). BUT before I go too far with this - is there a fuse or something that affects just the screen? The radio, phone, SiriusXM, CD, bluetooth all work fine (I have to use the display between the gauges, though). It's just the screen that is dead. I've never seen a phone screen just completely blank out like this from what had to be a tiny amount of liquid, so I'm dubious and thinking it might be something else. I checked the fuse for the head unit - it's fine. I don't see a fuse for just the screen on any of the diagrams, but I may be looking for the wrong word.
Thanks
Thanks!
