Philips HTL6140B/12 SoundBar no power

[StasNep]

Hello

I have got a defective Philips HTL6140B/12 SoundBar, no power from button or remote.
The power supply is external and working correctly, even tried another one.
Checked caps with esr meter and all seems ok.
Checked various resistors and smd capacitors and they seems ok.

Please help to diagnose this SoundBar.

Thanks

[StasNep]

Re: Philips HTL6140B/12 SoundBar no power

Uploaded service manual.

I don't know how to Check IC201 pin10 And Its conn parts.

Appreciate any help.

Thanks

[goodpsusearch]

Re: Philips HTL6140B/12 SoundBar no power

I can see that they used the type of glue that gets brown and conductive and corrosive of metals. You should carefully remove it.

[StasNep]

Re: Philips HTL6140B/12 SoundBar no power

Yeah, i just noticed it and measured, and it is conductive.

What method can you suggest to remove the glue, and that it wont damage the traces of the ic and the surrounding components?

[StasNep]

Re: Philips HTL6140B/12 SoundBar no power

I have cleaned the glue, it is powering on but all the leds are lit and stuck
on "ON" on the display.
Buttons not working and remote not working.

What to check next?

[StasNep]

Re: Philips HTL6140B/12 SoundBar no power

I think the soundbar is bricked!?
Maybe reflash the firmware?
Does someone have experience with serial soundbar firmware update?
It has a serial connection and i have all the tools for this.
Any guide will be Appreciated.

Thanks

[StasNep]

Re: Philips HTL6140B/12 SoundBar no power

Can you tell me plesae if the IC203 - EN25QH16 is the flash chip?
and if it can be flashed with this bin firmware?
https://www.p4c.philips.com/cgi-bin/...scy=KR&slg=AEN

I have ch341a programmer.

Thanks

[StasNep]

Re: Philips HTL6140B/12 SoundBar no power

Flashing firmware on that chip didnt work.
Any ideas?