Today at Atelier Kaz - ex-Honda R&D, F1, Indy/CART engineer

Since latter part of last year, had to put priority on things happening back in Japan so not much time updating the blog recently and over the last few weeks, not feeling well but finally getting back to normal speed....


While working on another NSX, two owners contacted me with their used audio head unit that they purchased from somewhere.

On NSX Prime and Japanese auction ...

Tags: audio head unit, head unit

Categories

Audio

While the leakage from the capacitors were minimum, there was suspicious leakage marking near the CD changer port. Couldn’t find where they came from….
Removed them and coated for now.



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Tags: alpine, audio head unit

Categories

Audio

Another owner sent in his audio head unit for refurbishment.

Initially, he wanted to send in the A/C CCU board for servicing as it could only operate when the fan speed control was set at max (typical CCU failure mode) and after reading my blog about the capacitor failures on other parts, decided to have his head unit serviced at the same time as he experienced no power, no display issue long time ago but it fixed ...

Tags: alpine, audio head unit

Categories

Audio

Another audio head unit was sent in from the owner stating that after parking the car for several days, the display of the audio head unit blacked out but still being able to listen to the music although none of the 8 switches on the front panel worked.
Switching on and off the unit several times seem to fix the issue and all switches now works fine.
It was frequent but not consistent issue so somewhat not an easy task to reproduce the same issue on the bench.

So, before ...

Tags: audio head unit, display, flex circuit board

Categories

Audio

And after removing many capacitors including the ones not in the photo, found out that some of the circuit pattern/track were dissolved and one of them was damaged by the previous service.





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Tags: alpine, audio head unit

Categories

Audio