WARNING: do not attempt to do this yourself if you have no prior experience with fixing pcbs/electronic components. Ask a professional for help.
I did not diagnose the problem. All the credit goes to the great people on Polish Mazda forum: Forum MazdaSpeed
The issue is the SMT (surface mounted technology) microchip that has lost its connection to the pcb.
Remove and disassemble the display:
Unsolder and remove the metal frame:
Release tension on all pins and very carefully unbend the LCD screen to remove the black plastic housing:
Unsolder smaller pcb with LEDs:
This is the microchip. Silicon that covers it needs to be carefully removed. Use a small knife and soft metal brush.
Once you get to the microchip you need to refloat all it connections. You will need a good solder gun like Weller or similar.
Inspect for any shortened circuits / bad solders under the magnifying glass or microscope:
Assemble and test (you can also test the main board with lcd by itself without the leds and other components):
Duuuude, I am so happy I stumbled upon this post. Fixed mine today and it looks perfect! What's funny is that I'm an electronics technician by trade, and specialize in microminiature electronic repair...so I feel kind of dumb for not checking the IC chip to begin with, lol. Either way, thanks for posting!
I tried this, though reluctant to do so. The disassembly process wasn't nearly as difficult as I was expecting it to be. Here's a couple links to YouTube vids on how to disassemble the center console to remove the display unit:
***BE SURE TO REMOVE THE BOLT LOCATED INSIDE THE GLOVE BOX***
In regards to rebaking the display unit, I followed the instructions posted here as worded, except that I baked my unit for 12:30 as the average of the 10-15 minute recommendation. Once it was finished baking, I let it cool down for 15 minutes as instructed, then reassembled everything. I gotta tell you, my display unit is displaying everything like it's brand new. I'm very impressed! Thanks so much for posting great instructions as well as pics to accompany everything.
Note: getting the display unit out of all of the plastic to look like it does in the pics posted only takes a few minutes. There are four little screws that need to be removed and everything else is held into place by plastic tabs. Some parts snap together. Just be patient and look at what you're dealing with and you'll figure it out.
Did the rebake procedure today, except i went for 25 minutes baking and 25 cooling passively in oven. So far works perfectly, as others have reported, so I am now waiting for the inevitable failing over time. One thing I have seen on youtube about this problem is people adding zip ties and such to the plastic pieces that sandwich the LCD and PCB together, so I am thinking perhaps just reassembling the parts together fixes it temporarily. If this does not work I will try the chip fix.
Update: not surprising I suppose but the bake fix failed after about 3 days. I disassembled everything today and tried to float the chip. Perhaps I did not quite get all the legs but it did not work, however i'm sure that it is the problem, as the display fixes itself if I flex the board slightly. I have given up for today but I will reattempt again in the future once it starts bothering me too much again.
I also fixed my LCD resoldering chip inside. there was like 30pcs legs with bad connection.
I used flux pen and resoldered all. remember to remove that silicon stuff first.
picture is before soldering.
The actuator failed in my 2007 6i, stuck on 'defrost'.
I've removed the old one, and for the life of me I can't quiiiiiite get the replacement to fit. I can't seem to get the plate in place, in a location where the actuator will accept it.
I know there have been other threads on this...
One of my garage openers quit after 11 years, went and got a modern one (Chamberlain B750C) that now comes with a bunch of features.
I haven't been able to program the Home-link on any of my vehicles, according to the website all vehicles manufactured after 2011 should be able to link to...
My moonroof moves back and forth fine but once it gets into the closed position it doesn't move up and seal with the roof. I have had to push it up for some time and now it doesn't stay up at all, had an incident at the car wash the other day with water everywhere. Anyone else seen something...
Hi fellow 6ers,
I recently replaced my headlight lenses, and would like to share with you my success. After much worrying about failure for nearly a year, I decided to just go ahead and do it with faith and courage. My lenses were so opaque that not only was it nasty, but was starting to...
I previously posted this mod as a concept after discovering that the CD changer of my 04 MPV and a Toyota Tacoma was the exact same unit. I discovered that it's the same unit in the Mazda6 once I bought a Mazda 6. This mod has been confirmed in my 2004 Mazda 6s wagon (USA w Bose and 6CD...