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

Addition to the A/C CCU Board, the owner brought all three Bose AMP and Alpine Head Unit.
The owner reported that there was no issues with the front (door) ones but the rear (passenger footwell) one was already making awful noise.

After checking the state of the four FETs on each board, tested each AMP on the bench and confirmed that both front ones were OK for the time being but I couldn't run the rear one even for 1sec because it was generating really loud high tone screaming ...

Tags: amp, bose, bose amp, speaker amp

Categories

Audio

Awhile ago, started working on another Audio Head Unit but as there was no major electronics issues and also the owner wanted to replace the
On/Off push button switch, kept it as mid priority item until I get the news from Japan about the availability and the delivery schedule.

There are three boxes landing today or tomorrow and seems like the new button is included in this delivery so
decided to finish the service over the weekend.



...

Tags: alpine, audio head unit, bose, ipod adaptor, pa11-hon, usa spec, usa spec pa11-hon

Categories

Audio

The Front AMP.

It’s been a while since last time I had to strip off so much
acid contaminated area on a single AMP.






Checked all four FETs and they were fine so no need to be replaced.

All ...

Tags: amp, bose, bose amp, bose speaker amp

Categories

Audio

In the middle of working on another NSX at the moment but will release the
blog later. Hope the owner has email access at the moment as I need some info
on his battery, washer nozzle, wiper, etc.





Back to the Bose AMP service.

The track at the jumper through holes were completely dissolved so ...

Tags: amp, bose, bose amp, bose speaker amp

Categories

Audio

Quite severe damages on the Rear one considering that it's from the 2nd gen.


...

Tags: amp, bose, bose amp, speaker amp

Categories

Audio