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

As I’m behind the schedule for the Eng Refresh, decided to work over the
weekend to finish the service on this board as much as possible.

In the past, I repaired the CCU board that required 25 extra services but
almost all of the damages were caused by someone without proper
soldering or electronics training so I don’t refer it as natural failure.

The worst CCU board that I serviced in the past with natural failure required
15 extra services and this board matched the same level of damages.








At the end, I had to use 7 x hard wire, 6 x jumper wire,
2 x removal of extra component, lots and lots of soldering bridges.




After spending many hours, finally, the board was ready to be powered up
on the bench for the first time since I received it at my place.

Happy with the basic check so time to apply the conformal coating.




Just need to use my NSX to test this board using my standard test scenarios
including the Function & Operation checks as well as the Self Diagnosis mode.

Hope to test it within the next few days.



As mentioned many times in my blog and posts, please have your
CCU board serviced before you start experiencing any issues.
By the time you notice the issue, it’s too late and severe damages were
already done.

It all depends on the environment conditions especially the heat so
not easy to provide you with definite guidance but based on what I saw
with the CCU board on UK based NSX, unless your NSX is Year 2000+ models,
the capacitors on your CCU board are already leaking the acid
without being noticed.

In Japan, during the summer, the temperature could hit well over 40degC
so the capacitor leakage happens at much earlier stage.
You will be surprised how hot the cabin temperature can get if the
NSX is parked outside under the direct sun light.
Even the CCU boards on 2000+ models are showing minor issues.

If you have aftermarket audio head unit with built-in AMP, it will
nicely cook the CCU board over the years if you love loud
volume level and speed up the capacitor leakage.


As a side note, there were already several Main Relay failures
(soldering crack, not capacitor leakage like CCU board) reported
on UK 2002+ models many years ago so even the final production
2005 year models are not safe from some of the electronics failures.

Kaz