Help repair laptop sound card - Page 1
Forum section: electronics / repair

author: navidsoft
author_rank: Newbie
timestamp: June 28, 2020, 04:34:31 pm
content: HiMy laptop sound card has been damaged and the laptop model is X542UNPlease help me to repair

author: bob91343
author_rank: Super Contributor
timestamp: June 28, 2020, 07:24:37 pm
content: Not enough information. What brand? What's wrong with the sound card? Maybe you can replace it.

author: Rasz
author_rank: Super Contributor
timestamp: June 28, 2020, 10:40:28 pm
content: few year old on the budget sidehow did you break it? was it water damage? expect rest to die soonif no water buy a $5 USB sound card and move on

author: navidsoft
author_rank: Newbie
timestamp: June 29, 2020, 07:50:59 pm
content: HiThanks for reply.I connected a Class D amplifier to the audio output, and after the connection, both the audio output and the speakers embedded in the laptop were destroyed.The laptop model is Asus x542un

author: flolic
author_rank: Frequent Contributor
timestamp: June 29, 2020, 08:01:57 pm
content: You could try to replace ALC3288 audio chip.

author: navidsoft
author_rank: Newbie
timestamp: June 30, 2020, 03:31:53 am
content: Thanks a lotI will check and tell you the result

author: navidsoft
author_rank: Newbie
timestamp: August 15, 2020, 05:39:08 pm
content: Hi,I replaced the sound card ic but the problem was not solved.

author: _Wim_
author_rank: Super Contributor
timestamp: August 15, 2020, 08:18:55 pm
content: Post some pictures here of the sound card where the chip type numbers can be read. Maybe we can spot something obvious. Did you check the power rails going to ALC3288 chip and other chips in the output path?

author: navidsoft
author_rank: Newbie
timestamp: August 16, 2020, 02:42:17 am
content: This is a block diagram of this laptopASUS-VivoBook-15-X542UN-Schematic-Asus-X542URV-Schematic.jpg(256.74 kB. 1920x1606 - viewed 160 times.)and everything has been checked,the sound card is recognized but does not make any sound

author: _Wim_
author_rank: Super Contributor
timestamp: August 16, 2020, 06:27:59 am
content: Quote from: navidsoft on August 16, 2020, 02:42:17 amWhat is "everything" ? All the lines on the block diagram?

author: navidsoft
author_rank: Newbie
timestamp: August 16, 2020, 09:14:58 am
content: All of part inside the ic and all tracks of the sound cardWhen i connect 3.5mm jack , that makes knock sound

author: _Wim_
author_rank: Super Contributor
timestamp: August 16, 2020, 10:36:02 am
content: Quote from: navidsoft on August 16, 2020, 09:14:58 amSorry, I cannot help you. Somehow you are able to replace a TQFP chip, but cannot explain what exactly you have tested which makes it impossible to provide any useful support.

author: Rasz
author_rank: Super Contributor
timestamp: August 16, 2020, 12:43:09 pm
content: Quote from: _Wim_ on August 16, 2020, 10:36:02 amreplacing chips blind is a mark of please bro, you can usually tell by the way first post is formulated ;pas I said earlier the best course of action was "$5 USB sound card and move on"

author: navidsoft
author_rank: Newbie
timestamp: August 16, 2020, 05:43:09 pm
content: Quote from: _Wim_ on August 16, 2020, 10:36:02 amI checked the chip parts and everything was OKI also checked the tracks and the output tracks were OKAnd that there is no schematic to test the other tracks