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Discussion Starter #1
Hello Gentlemen-
This is my first thread on this forum and I'm sorry that it had to be on this topic. I will soon load up a "Proud New Owner" thread to show you my new Carbon black e39 m5. I was on e90post for about 6 years and I'm looking forward to being a part of this M5 community.

So when I bought the car and it had 3-4 large grey lines on the lcd screen. Ive replaced laptop lcds so it wasn't a daunting task to replace the one in the Nav Unit- I went through the install which went pretty well and was able to put in the new LCD in about 30 minutes- I disconnected the battery and left it disconnected while I was working on the head unit. When I came back and installed the LCD everything powered up and all my buttons worked- only thing that wasn't working properly was the right dial would not move left or right in the menus but rather only up and down- I took the head unit out again, opened it up and made sure the back connecter was properly connected on the right stick/ dial- When I connected everything up the second time and powered up, none of the buttons were working on either side and the dials won't recognize when they are being pushed in.


Observations:
- When I start the car, the M logo doesn't show up anymore like it always did when I started it up (before LCD upgrade)
- I am running software v32 with Nightmare, M logo and cams

Things Ive tried:

- I disconnected the battery and waited 5 minutes - no luck
- I did that Fix your DSP thing where you take out fuse 7 and 41 but no luck either
- I touched the two battery cables together for 30 seconds to see if it would reset the computer

Things I still haven't tried yet:
- I read some one who had a similar problem put in the old LCD and everything worked again- I may try that because Id much rather have a bad LCD than not be able to use the radio or anything
- Downgrade to V22 and then back to V32 again (I'm trying to find a V22 download link)
- Putting in another 16:9 head unit to see if its a car problem or a head unit problem.

If anyone has any experience with this, has a link to V22.1 OS, or could offer some insight, experience, or tips please let me know. Im kind od s tuck here and I hate not being able to fix things myself. Going to put in the old LCD tonight- ill let you know what If it does anything.

Alex Mac
 

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Hi,

Opening up and then re-assembling the monitor to get to the LCD screen is fiddly and there's quite a few potential aspects to miss or get wrong - those tiny ribbon connectors and clasps, ensuring all the PCB's fit back into place correctly, getting the locating holes placed right for the screws etc etc. It sounds as though you might've not 'seated' some of those ribbon cables properly, so open back up and ensure they're all done properly and securely. A few members have recently tried DIY LCD panel replacements and ended up frustrated and then sent their unit's off to specialists who can do them backed up with good experience of doing so. Have a search around for similar topics and a USA based specialist name will be mentioned. Get your monitor sent off there to have it put back together properly. Hopefully, there's no components that are now kaput, if so, then maybe they're replaceable components. If they're not, then it's most likely you'll need to purchase another used E39 specific monitor unit.

Cheers, Dennis!
 
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Hi,

Opening up and then re-assembling the monitor to get to the LCD screen is fiddly and there's quite a few potential aspects to miss or get wrong - those tiny ribbon connectors and clasps, ensuring all the PCB's fit back into place correctly, getting the locating holes placed right for the screws etc etc. It sounds as though you might've not 'seated' some of those ribbon cables properly, so open back up and ensure they're all done properly and securely. A few members have recently tried DIY LCD panel replacements and ended up frustrated and then sent their unit's off to specialists who can do them backed up with good experience of doing so. Have a search around for similar topics and a USA based specialist name will be mentioned. Get your monitor sent off there to have it put back together properly. Hopefully, there's no components that are now kaput, if so, then maybe they're replaceable components. If they're not, then it's most likely you'll need to purchase another used E39 specific monitor unit.

Cheers, Dennis!
Agreed, the ribbon cables would be the first place I would look. Do you have Navcoder? If you do it has an "On-Board Monitor" emulator. It will default to "Listen Only"; if you un-check this box you can control the Infotainment system via your PC. The display in the HU will reflect your selections done from the emulator. Be, however, fore warned there is considerable latency in the emulator so any command sent via the emulator will take a few seconds to be recognized.

While in "Listen Only" you can turn the knobs push the buttons and see if the message is being sent in the bus. If there is no message (command) being sent on the bus the issue is with the head unit and is not, likely, related to the navigation O/S.
 

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Discussion Starter #4
Hi,

Opening up and then re-assembling the monitor to get to the LCD screen is fiddly and there's quite a few potential aspects to miss or get wrong - those tiny ribbon connectors and clasps, ensuring all the PCB's fit back into place correctly, getting the locating holes placed right for the screws etc etc. It sounds as though you might've not 'seated' some of those ribbon cables properly, so open back up and ensure they're all done properly and securely. A few members have recently tried DIY LCD panel replacements and ended up frustrated and then sent their unit's off to specialists who can do them backed up with good experience of doing so. Have a search around for similar topics and a USA based specialist name will be mentioned. Get your monitor sent off there to have it put back together properly. Hopefully, there's no components that are now kaput, if so, then maybe they're replaceable components. If they're not, then it's most likely you'll need to purchase another used E39 specific monitor unit.

Cheers, Dennis!
Dennis, thanks for the input. I am going to take it apart again tonight to check it out. I didn't feel too confident about the ribbon connectors as one of the plastic clips broke and maybe it hasn't been securely fastened again. Any advice on what I could clean the ribbon cables with that would be safe?

Im going to do these three things tonight:
- Downgrade to v22 and see if anything changes
- If that doesn't work, open up and check ribbon connectors/ reseat them
- If that doesn't work, open up fully and put old LCD back in
- If none of that works I'm going to be on eBay buying a new nav screen tonight ouch


Agreed, the ribbon cables would be the first place I would look. Do you have Navcoder? If you do it has an "On-Board Monitor" emulator. It will default to "Listen Only"; if you un-check this box you can control the Infotainment system via your PC. The display in the HU will reflect your selections done from the emulator. Be, however, fore warned there is considerable latency in the emulator so any command sent via the emulator will take a few seconds to be recognized.

While in "Listen Only" you can turn the knobs push the buttons and see if the message is being sent in the bus. If there is no message (command) being sent on the bus the issue is with the head unit and is not, likely, related to the navigation O/S.
Oh man no I don't have Navcoder- I came from the BT scanner in the e90 world so I assume maybe its similar? Ill look into it. Im in South Florida and i have zero faith in any of the bmw shops here that I've found so far so Im a bit wary about going around for help.
 

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Dennis, thanks for the input. I am going to take it apart again tonight to check it out. I didn't feel too confident about the ribbon connectors as one of the plastic clips broke and maybe it hasn't been securely fastened again. Any advice on what I could clean the ribbon cables with that would be safe?

Im going to do these three things tonight:
- Downgrade to v22 and see if anything changes
- If that doesn't work, open up and check ribbon connectors/ reseat them
- If that doesn't work, open up fully and put old LCD back in
- If none of that works I'm going to be on eBay buying a new nav screen tonight ouch




Oh man no I don't have Navcoder- I came from the BT scanner in the e90 world so I assume maybe its similar? Ill look into it. Im in South Florida and i have zero faith in any of the bmw shops here that I've found so far so Im a bit wary about going around for help.
Navcoder is specific to the BMW I-bus License fee is €25.00. An interface is required which can be purchased €35.00.
 

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Discussion Starter #6
FIXED IT!!!!!!!

Ugh I am so relieved- Dennis I did what you said and really paid attention to the ribbon connectors- From what I saw they were all shifted over just a bit too much to really be making any contact- I Shifted them over, made sure they were all touching and then tried it out again and everything worked perfectly!!!

SO happy- This was really bothering me for the last two days- I usually can fix things like this so to be failing was really putting a damper on my days- Thanks for the help fellas-
 
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