This fix will work with any Kenwood head units with a detachable CPU board as shown in the video. Most models are from the DNX series.
The root cause is overheating due to a thermal issue between the CPU and the heatsink. Overheating makes the solder balls change their size and cause open solder or contact issues. A reflow / Reheating / Baking will fix the issue.
Hot Air gun Setting:
Temperature: 250 Degree Celsius
Airflow speed: Knob set at 6
FP-500 No-Clean Flux
Disclaimer: Perform this repair at your own risk touching any internal parts can cause electric shock!
NOTE: I do this pick electronic trash and repair as a hobby during my free time. Most of the units if not needed will be sold online.
Негізгі бет Scrap-n-Repair: How to fix Kenwood DNX Headunit No Display/ No Power / Status LED RED
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