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

While working on the NSX for TB/WP/Valve service, I have been servicing one CCU board in the background.



After checking the damaged area, I came to a conclusion that I must dedicate more time to finish the service.

Although this will delay my TB/WP/Valve service for a few days, I wanted to focus on this board as the damages were quite serious.


One of the capacitor leakage managed to create intermittent connection at the nearby component.


At the end, nine out of thirteen capacitors were leaking and five of them were causing serious damage to the board.


In fact, two of them managed to dissolve the through hole and already started to cause further damage to the solder side of the board.

The worst one was C32 and it managed to dissolve the through hole of near by resistor module RM1.


RM1 should show 4.7K ohm at each pins but some of them were showing big offset suggesting that there were several intermittent connections somewhere in the through hole.


At the end, it had to be removed to be thoroughly cleaned and inspected.