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

While servicing the NSX, in the background, I was helping other owners for the Bose AMP, audio head unit and the A/C CCU.
Just touching on the AMP and head unit in this post.


As always, I recommend all owners to carry out the preventative measure with the well-known issues on our NSX as it will save one’s time and money a lot.

This owner acted early enough with his Bose AMP that although the capacitors were already leaking, he managed to minimise the damage and no extra cost.






All capacitors replaced and conformal coating applied.




Hot melting glue and thermal compound applied.




All AMPs were tested on the bench for several hours including the thermal shock.

Happy with the result so all three were returned to the owner safely.


The owner had two audio head unit and decided to have his original one to be refurbished.
Unfortunately, he didn’t act early enough and only sent it to someone else after experiencing some issues as he didn’t know my audio head unit service.

After the head unit was returned, it worked fine for a while but then it started to cause cracking noise and also suddenly, the signal level was reduced so he had to crank up the volume.


So, before opening the unit, I tested it on the bench and confirmed that there was white noise even without touching the volume control and also if the unit was left operational for about 5 – 10min, gradually the audio signal level was lost and had to turn the volume control up several times in order to actually change the signal level so definitely something was not right.






So, opened the unit and found this.

Only one capacitor was replaced allowing remaining ones to leak the acid and causing new issue.
Even the replaced one had very poor soldering result.




Looked like the same person re-soldered the nearby dual channel OP AMP.

Not good as it let the soldering iron touch the nearby capacitor and melted the body.
Unfortunately, I won’t be able to test this OP AMP without removing it first so won’t be able to tell whether any partial damages were done or not.