Repair an OEM radio

[anachonda]

I want to know if it is possible to repair it?

I just open it, i do not see anything.

Do you know, where the breakdown comes?

I will send some pictures if i begin the repair

[Kaz-kzukNA1]

Hi, anachonda.
What kind of problem are you experiencing?
Is it the noise from the speaker?

If that is the case, then you may have problem with your Bose Amplifier (located inside the speaker box at the doors and at the passenger foot well) and not the OEM radio (head unit).

More information would help us in supporting you.

Regards,
Kaz

[anachonda]

Hi Kaz,

All my amps are new, it's the radio!

I haven't lights, sounds. Nothing.

And the fuse is ok.

[Kaz-kzukNA1]

Was your head unit working fine until recently and suddenly failed?
Or, never worked since the start of your ownership?
At the time of failure, any possibility of cable being disconnected/disturbed by other modifications that you were working on?

No lights at all....
On your head unit, you should have the following pin out information.
6448

If you have the bench power supply, you can apply 12V at the pin 'ACC (+)' and 'GROUND' (-).
Your head unit will operate on the bench even without the power at the pin 'BATTERY'.
'ILLUMI+' is for the illumination control unit and 'SWD+B' is for the power aerial as well as for switching On/Off the power supply to the Bose amplifier but for this bench test, they are not required.
This will confirm whether you have wiring issue on the chassis side or indeed, a failure at your head unit.

If it is my head unit, I'll be happy spending hours to check the power circuit first and then move on to each modules.
6447 6449
6450 6446

You may want to try your local Alpine car audio place for a quote on repair. In Japan, it was not too expensive long-long time ago for replacing some of the power capaciotrs but this all depends on what kind of failure you have with your head unit.

I don't know the radio frequency range used in France but you may find it more cost effective to seek the used head unit on the auction site.

Regards,
Kaz

[anachonda]

Was your head unit working fine until recently and suddenly failed?
SUDDENLY:(


Or, never worked since the start of your ownership?
At the time of failure, any possibility of cable being disconnected/disturbed by other modifications that you were working on?

I haven't modifications on the harness. The "allume cigare (in french)" is working.



No lights at all....
On your head unit, you should have the following pin out information.
6448

If you have the bench power supply, you can apply 12V at the pin 'ACC (+)' and 'GROUND' (-).
Your head unit will operate on the bench even without the power at the pin 'BATTERY'.
'ILLUMI+' is for the illumination control unit and 'SWD+B' is for the power aerial as well as for switching On/Off the power supply to the Bose amplifier but for this bench test, they are not required.
This will confirm whether you have wiring issue on the chassis side or indeed, a failure at your head unit.

If it is my head unit, I'll be happy spending hours to check the power circuit first and then move on to each modules.
6447 6449
6450 6446

You may want to try your local Alpine car audio place for a quote on repair. In Japan, it was not too expensive long-long time ago for replacing some of the power capaciotrs but this all depends on what kind of failure you have with your head unit.

I don't know the radio frequency range used in France but you may find it more cost effective to seek the used head unit on the auction site.

Regards,
Kaz

No lights at all.

I have a collegue that is working on electronics, i will ask monday if he can find the problem.

I think it's the big capacitors, i'll give you the news like possible.

[anachonda]

Hi Kaz,

It does not work on the bench with the power supply.

We will remove the boards of the frame to inspect all the components tomorrow.

My collegue thinks it's the IC at the middle of the upper board. the big IC.

You changed it on your pictures?

I will put some pictures of the check-up.

Bye,
Greg

[anachonda]

We checked the power button, we can see a signal when we push it.

We removed the bottom Board.

There are no burned components.

My friend think that it is the big alpine component is died.

Pictures tomorrow.

sorry for my english:redface:

[anachonda]

Hi,

Good news i found the problem of my radio. I hope.

There are a leakage of one of the both condensator (16V 2200uF). It damaged the board (the varnish of the board is slack) and cut a line from the power switch to the power supply connector.

I take pictures of each step to show a solution of this problem. There are may be another problem on it. I will see after the replacement of the condensators.

I try to put the pictures as soon as possible

[Senninha]

I hope you've found the problem and can repair it successfully. Well done for sticking with it and to Kaz for support for another greatful owner.

regards, Paul

[anachonda]

The first picture show the first power supply test.

http://img264.imageshack.us/img264/3307/p05011017090001.jpg (http://img264.imageshack.us/i/p05011017090001.jpg/)

This one show the condensator we removed

http://img39.imageshack.us/img39/3999/p07011012270002.jpg

in detail:

http://img269.imageshack.us/img269/2038/p07011012270003.jpg (http://img269.imageshack.us/i/p07011012270003.jpg/)

with a microscope:

http://img412.imageshack.us/img412/2516/p07011012270001.jpg (http://img412.imageshack.us/i/p07011012270001.jpg/)
The right line is cut, it is the line of the power supply of the front power button.

We will replace the 2 condensators (16V 2200uF) and put a wire to replace the damaged line.

Next news, monday evening, i hope it will be good!
Bye,
Greg

[NSX France]

Now, there are many problems on the NSX's radio, like amps. For many owners, Head Unit repair was impossible, so if kzukNA1 & anachonda find a solution, it's a very good news.
I hope a good result to the rescue!

[goldnsx]

Good job! The problem is that there are about 100 of electrolytic caps in the radio. If the problem can be reduced to a few of them like those in the main power that would really help. Otherwise looking at the bit $$$$, sorry ££££ a new radio costs...

[anachonda]

The news, we changed the capacitors, 2 X 16V 2200uF and 1x 16V 1000 uF.
We did not change all the capacitors for the moment, we want check if the radio is ok with this repair.

The pictures are the best explication.

http://img532.imageshack.us/img532/1812/p12011007390001v.jpg (http://img532.imageshack.us/i/p12011007390001v.jpg/)

http://img246.imageshack.us/img246/6781/p12011007390002.jpg (http://img246.imageshack.us/i/p12011007390002.jpg/)

http://img339.imageshack.us/img339/4217/p12011007390004.jpg (http://img339.imageshack.us/i/p12011007390004.jpg/)

I assemble the rest of the radio this evening and will try it tommorrow.

We will see if the problem was the capacitors. I hope

Bye,
Greg

[anachonda]

I am very happy to say you that my radio is working . i know we are not tommorrow but i was curious.

2 pictures:

http://img704.imageshack.us/img704/7362/p13011022410001.jpg (http://img704.imageshack.us/i/p13011022410001.jpg/)

http://img704.imageshack.us/img704/45/p13011022410002.jpg (http://img704.imageshack.us/i/p13011022410002.jpg/)

i'm very happy of the end of this problem. If it can help a nsx owner!

:)

[Sudesh]

Great info and thanks for the updates and photos of your work and glad to see you had a successful out come. :)