주요 콘텐츠로 건너뛰기

Sony WH-XB900N Extra Bass Headphones

1 질문 전체 보기

Is there any way of reflashing this?

My headphones have been dropped partly into water. It is dry now, but the unit does not work. If I press both buttons for like 5 seconds, the blue LED flashes three times. If I charge the battery, the LED turns red. Power up doees not work. The battery has around 4.1V after charging one hour. Can I reflash?

이 질문에 답하기 저도 같은 문제를 겪고 있습니다

좋은 질문 입니까?

점수 0
댓글 달기

답변 1개

가장 유용한 답변

Hi @bjoerngroehn

Depending on which side of the headphones fell in the water, it may be more a case of seeing what damage due to any water ingress has occurred to the electronics in the headphones first, before seeing if it needs a firmware reflash.

The headphones are only water resistant and not water proof.

The impurities in the water causes corrosion and provides circuit paths for the electricity which were not in the headphone's operating design and could damage the components. The corrosion starts immediately and is ongoing until it is completely cleaned away

Do not continue to charge or to turn on the headphones and then remove the battery as soon as possible to minimize any further damage.

Then you will need to dis-assemble the rest of the device and clean all the affected parts using Isopropyl Alcohol 99%+ (available at electronics parts stores) to remove all traces of corrosion and water. If possible do not use "rubbing alcohol" as in some cases this is only 70% IPA or less, can contain additives which may leave conductive residues and is not as effective. If you do have to use it check the label to verify the amount of IPA. The higher the percentage of IPA the better

Here is a link that describes what happens. Electronics Water Damage

As always with electronics, especially surface mounted pcb be gentle when handling and especially when brushing away the corrosion. You do not want to remove any components from the board. The ends of any flex cables and their connectors need to be cleaned as well

Hopefully after you have done all this the headphones might possibly work correctly again.

Here's a battery replacement video that may help as it shows how to open the headphones etc

해당 답변은 도움이 되었습니까?

점수 3

댓글 3개:

Thanks. I have opened it up and looked in a microscope and there is absolutely no sign of water or corrosion, so it is really hard to tell were the water came in. I might disassemble the small board to board connectors and clean them with alcohol. I guess reflashing is difficult without the correct firmware and flashsoftware. I used to work at Sony Mobile, but I do not have any connection to Sony consumer products.

@bjoerngroehn

Found this firmware so maybe you could try reflashing it but sometimes with firmware you can only do updates and not if it is the same version, but since it doesn't turn on most probably this won't work anyway

Thank you! I will try it.

댓글 달기

귀하의 답변을 추가하세요

Björn Gröhn 님은 대단히 고마워 할 것입니다.
조회 통계:

24 시간 전: 1

7일 전: 5

30일 전: 22

전체 시간: 70