A common problem with BMW radio especially on E60 and E61 chassis in the CCC or CIC failing. The iDrive screen stays black or keeps restarting. In many cases, the problem is four chips on the main board. The solution is to replace the CCC which is quite expensive or repair your existing unit.
I had read many "success" stories online where you can fix BMW CCC using a heat gun. Well, I tried and failed miserably!
The most reasonable fix is to find a shop that specializes in repairing BMW CCC units. You simply remove the CCC and ship it in for repair. Once the unit is fixed, just install it on your BMW, no need to code anything. You can find BMW CCC Repair Service offered even on eBay.
Which I should have done!
Instead of sending my CCC in, I decided to try to repair it myself. I had read many users had success repairing BMW radio themselves. Well, I failed. I am going to share with you what I did.
First, I remove the CCC unit. Quite simple and straightforward. If you don't know how to remove your BMW radio look up there are plenty of videos and instructions online.
Next, I had to access the circuit board with the defective chips. Reading online it said you need to start from the top. Well, that was not quite right.
On top are the DVD and CD drive but no circuit board that I was looking for. After spending 30 minutes to get to the bottom of the CCC, I realized I was in the wrong path. Time to stop and re-evaluate.
Next, I starred looking at the bottom of the unit where I noticed the cirucut board.
Removed the bolts and there was a circuit board that I was looking for.
Because the defective chips are found on the bottom of the board, I had to remove the board.
Next, I used some aluminum foil to protect the circuit board.
Next, I started heating up the chips. My heat gun was at 980F, and I did this for about 3 minutes.
After putting everything together, the radio still did not work. I think the problem is that I overheated the chip. If I had to do this again, I would not heat up the chip for over 650F and any longer than one minute.
I know what you are thinking. If you have this problem, I would NOT recommend that you try the DIY fix. The success rate is very low. Instead, if I had to do this again, I would just let the professionals do this repair. There are plenty of BMW CCC Repair Service listed online.
My CCC is damaged beyond repair. Now the only solution is to buy another CCC.