Harman/Kardon Onyx Bluetooth Speaker - No Power

[minhluanvk297]

Re: Harman/Kardon Onyx Bluetooth Speaker - No Power

https://www.5giay.vn/threads/chuyen-...tudio.8273931/

[pluton23]

Re: Harman/Kardon Onyx Bluetooth Speaker - No Power

Please help with the repair Harman Kardon Onyx Studio. On the main board burned out capacitors. To replace them i need to know the type and capacity. My speaker works but is not charging. If someone has good advice how to restore the speaker (and what type of capacitors inside) I would be very grateful. Thanks

[budm]

Re: Harman/Kardon Onyx Bluetooth Speaker - No Power

If you can give us the P/N as printed on that IC 700 then we can look at the spec sheet to see what pin 2 of that IC is for. From the look of it those caps (C7013, 712, 711, 714, 701) are filter caps connected in parallel, MLCC (Multi Layer Ceramic Capacitor, they fail in shorted out condition mode) type, C 712, 711, 714, 701 should be the same value, the C713 is probably <1 uF.
You can remove the one that is not damaged c712 and measure the capacitance.
You should also clean up the board so we can see the traces better.
IC 600 looks to be the same setup.

[pluton23]

Re: Harman/Kardon Onyx Bluetooth Speaker - No Power

If you can give us the P/N as printed on that IC 700 then we can look at the spec sheet to see what pin 2 of that IC is for. From the look of it those caps (C7013, 712, 711, 714, 701) are filter caps connected in parallel, MLCC (Multi Layer Ceramic Capacitor, they fail in shorted out condition mode) type, C 712, 711, 714, 701 should be the same value, the C713 is probably <1 uF.
You can remove the one that is not damaged c712 and measure the capacitance.
You should also clean up the board so we can see the traces better.
IC 600 looks to be the same setup.

if I understand correctly the question )
S\N FC0005-0188023
IC 6132A-ONYXST

[budm]

Re: Harman/Kardon Onyx Bluetooth Speaker - No Power

We need the P/N as printed on top of that IC U700
https://www.badcaps.net/forum/attach...1&d=1490356626

[pluton23]

Re: Harman/Kardon Onyx Bluetooth Speaker - No Power

We need the P/N as printed on top of that IC U700
https://www.badcaps.net/forum/attach...1&d=1490356626

P\N printed on main board (may be the white paper label?) or on the case?

[budm]

Re: Harman/Kardon Onyx Bluetooth Speaker - No Power

Please see attached picture.
BTW, do you proper tools to do SMD repair?
Did you clean the board yet so we can see how bad the damage is?

[pluton23]

Re: Harman/Kardon Onyx Bluetooth Speaker - No Power

Please see attached picture.
BTW, do you proper tools to do SMD repair?
Did you clean the board yet so we can see how bad the damage is?

Thanks a lot for your willing to help, I really appreciate it, only tomorrow will be able to write everything in details. Another problem is swollen capacitor p1352 (blue barrel to the right and "down"), it would have to change. Special tools i have not yet, I want to get information about the type of the burnt capacitors and replace it with a new (by soldering).

[budm]

Re: Harman/Kardon Onyx Bluetooth Speaker - No Power

Once we get the P/N of that IC the we can find the specification sheet for the IC to find out what those caps connected to pin 2 are for then we can go further, I am sure that they are just filter caps connected in parallel.
And when you clean up the board to inspect the traces then we will know how bad the damage is.

[pluton23]

Re: Harman/Kardon Onyx Bluetooth Speaker - No Power

Once we get the P/N of that IC the we can find the specification sheet for the IC to find out what those caps connected to pin 2 are for then we can go further, I am sure that they are just filter caps connected in parallel.
And when you clean up the board to inspect the traces then we will know how bad the damage is.

U700 number 54331 TI 3134 ZC 83 G4
U600 - the same

I've cleaned up the board, please see attached file.

thanks in advance

[Agent24]

Re: Harman/Kardon Onyx Bluetooth Speaker - No Power

Burnt component seems to be L701, which would imply a short circuit somewhere.
I also notice C633 (Big electrolytic, bottom right) is bulging.

U700 is a TPS54331, of which the burnt inductor would have been feeding Pin 2. Pin 2 is the input, so the U700 has probably shorted to ground and caused the burnt L701.

My theory then is that either:

1) Unit was connected to too high a voltage (at least 30v), Which blew C633 and also U700 - did you connect it to a 30v or higher supply?

2) C633 failed by itself, causing a supply voltage drop which meant U700 overworked and overheated, then shorted.


The burnt section of board will probably be conductive. You will likely have to scrape it out.

[pluton23]

Re: Harman/Kardon Onyx Bluetooth Speaker - No Power

Burnt component seems to be L701, which would imply a short circuit somewhere.
I also notice C633 (Big electrolytic, bottom right) is bulging.

U700 is a TPS54331, of which the burnt inductor would have been feeding Pin 2. Pin 2 is the input, so the U700 has probably shorted to ground and caused the burnt L701.

My theory then is that either:

1) Unit was connected to too high a voltage (at least 30v), Which blew C633 and also U700 - did you connect it to a 30v or higher supply?

2) C633 failed by itself, causing a supply voltage drop which meant U700 overworked and overheated, then shorted.


The burnt section of board will probably be conductive. You will likely have to scrape it out.

we can only guess what really happened to the speaker, I bought it already broken

[pluton23]

Re: Harman/Kardon Onyx Bluetooth Speaker - No Power

Once we get the P/N of that IC the we can find the specification sheet for the IC to find out what those caps connected to pin 2 are for then we can go further, I am sure that they are just filter caps connected in parallel.
And when you clean up the board to inspect the traces then we will know how bad the damage is.

Could you find the specification sheet about burnt capasitors' and resistors' types ? Thank you.

[budm]

Re: Harman/Kardon Onyx Bluetooth Speaker - No Power

Just remove ONE of those cap as suggested earlier and check the capacitance.

[pluton23]

Re: Harman/Kardon Onyx Bluetooth Speaker - No Power

Please tell me what is the resistor the fuse in place С701 (burnt, most damaged). In a parallel module U600 it is not (only 3 capacitors), I can't determine its type.
С711, С712, С713, С714 - everything is clear, but with this С701 is a mystery.

[Agent24]

Re: Harman/Kardon Onyx Bluetooth Speaker - No Power

The burnt component is L701. It's an inductor, not a capacitor. See photos posted earlier in the thread.

[pluton23]

Re: Harman/Kardon Onyx Bluetooth Speaker - No Power

how to identify this inductor to replace it with new?
соuld you send specific information about this part?
thanks.

[Agent24]

Re: Harman/Kardon Onyx Bluetooth Speaker - No Power

Unfortunately I don't know what value or properties it has.

[budm]

Re: Harman/Kardon Onyx Bluetooth Speaker - No Power

So those 4 caps connected in parallel to the output side (which feed pin 2 input pin of the IC) of L701 are all OK and not shorted?
I wish you will show the pictures of the board after clean up.
You need to verify if there are any shorted circuit before even trying to locate the replacement inductor.

[pluton23]

Re: Harman/Kardon Onyx Bluetooth Speaker - No Power

So those 4 caps connected in parallel to the output side (which feed pin 2 input pin of the IC) of L701 are all OK and not shorted?
I wish you will show the pictures of the board after clean up.
You need to verify if there are any shorted circuit before even trying to locate the replacement inductor.

cleaned up board