[edo69]

Hello,

unfortunately the DAC board I have found on http://www.audiophonic.fr is not the same mounted on Beosound 9000; It is only used to disassemble one of the two Ic TDA1305T and replace the original one with it.

[edo69]

Unfortunately noone of these suppliers you suggested have the TDA1305t in stock.

I also tried with 12 other sellers, such as: Mouser, Farrell, Tme, etc. and noone had avaliability.

So I decided to purchase an entire DAC board with n. 2 TDA1305T inside, on http://www.audiophonics.fr; I will keep you updated

[edo69]

Sorry, I missed to tell you about this test, that we already have done:

The result is that when the sound disappears, even the analog audio signal disappears at the output pins of the TDA1305T .

At this point, I think we have no more any doubt regarding the need to replace the TDA1305T to fix the problem.

As you already know, we already tried to replace the original DAC with other two, that I have purchased on Ebay, and, no obstain the Ic’s were guaranteed as “original” and “brand new”, noone of them, once mounted, werk properly.

Do you know any reseller of electronic components who could sell me a truly original and brand new Ic?

Thank you a lot for your precious cooperation

[edo69]

Goodevening,

today with the tachnician we check these line:

pin:
4. BCK -> Signal ok

5. WS -> Signal ok

6. Data -> Signal Ok

19. MSUB – > before and after audio stop remain on 5v

1. VDDA – > 5v, before n after

10. VDDD -> 5v, before n after

28. VDDO -> 5v before n after.

 

Technician reamin on idea that the issue is the DAC.

[edo69]

I think is always beautiful, even in this version.

[edo69]

Thank you a lot; I will send your post to the technician and I’ll update you on what will happen.

Kind regards.

[edo69]

Hello,

let me correct you:

the issue with the original Ic TDA1305T is that in 1-2 minutes the CD audio becomes mute, the CD keep spinning and the timer goes on while with other sources (radio, n. radio, n. music) there are no problems at all.

Individuated the Ic TDA1305T as the responsable of the issue by the technician, I providet to buy on Ebay n. 2 spare parts (original and brand new, they said).

When arrived, we replaced the original IC with a new one: we tested functioning, and after abour 30 sec. the cd signal became intermittent, then disappeared.

So we replaced the new Ic with the other new Ic; testing functioning, we had no sound at all.

Finally, we replaced the Ic with the original one, and everything came back the same as before (soun disappear in 1-2 minutes).

So we had 3 different responses by 3 different Ic’s.

What do you thingk about that?

• This reply was modified 1 week, 5 days ago by edo69.

[edo69]

Hello, sure I know which version of Beosound 9000 I have; is a Mk3 (type n. 2571).

We are consulting the BS9000 MK3 service manual.

Thanks for your opinion, I’ll send it to the technician.

Any other suggestions will be appreciated.

Kind regards

 

 

[edo69]

I did the test 27 more times; at the first attempt, I have found various errors, then I realized they were errors of 10 years ago. So I erased them and started the test more times. Now it says that everything is fine (no errors at all) but the problem with CD remains the same.

If it was the output board to need reparation, is that one the service manual calls PCB41?

• This reply was modified 1 month, 1 week ago by edo69.

[edo69]

Hello, I got to put my BS9000 mk3 in test mode.

Test 27 did not gave me the answer I was looking for: just ml 8 error, that indicates an issue in masterlink circuit.

Everything OK with test 73, after laser replacement; he said “aps adjusted” , but the problem remains the same.

The strangest thing happened with test 71, that opened the lid, then closed it, and the sledge went to position 6, then to 5, 4 , 3 and 2.

Then turned OFF; no error or anything displayed.

I did it more time, always with the same result.

What does it mean?

 

Sorry, I didn’t read that to make test 71, the position 1 must be without the CD, while positions 2,3,4,5 and 6 must have the CD placed.

I repeated the test with position 1 empty, and it results OK.

• This reply was modified 1 month, 1 week ago by edo69.
• This reply was modified 1 month, 1 week ago by edo69.
• This reply was modified 1 month, 1 week ago by edo69.

Attachments:

You must be logged in to view attached files.

[edo69]

Does anybody have the electronic diagram of the main board of BEOSOUND 9000  Type no. 2571 (MK3)?

Attachments:

You must be logged in to view attached files.

[edo69]

It is sure: the output board is KO; does someone know where can I find a new one?

[edo69]

Hello. thank you a lot; I will run the test and I will post the result.

[edo69]

Thanks for your reply. I tried to connect the Beolab 3500 to another cable, and it works properly.

At this point, I do believe there was something wrong in the Master Link plug

[edo69]

Hello everyone,

I just got a brand new woofer, and I already replaced the broken one on the left side.

The new woofer works great, but now no sound comes from the right side of Beolab 3500.

What could be the cause?

Maybe when I reconnected the beolab 3500, the master link plug was not properly plugged?

I will check it out…

[edo69]

Thanks, Guy

[edo69]

Thanks for your reply.

The problem is that BS5 does not always apply the same rule.

Sometimes BS5 classify the album under the first letter, sometimes under the first letter of the second word.

And I don’t know how to make that BS5 apply always the same rule.

[edo69]

Thanks, Guy.

[edo69]

no problem, Guy

[edo69]

Thanks for your reply, but… have you readen my post, before replying?

[Author]

Posts