I Have a skyworth 20L01 no sound. i change the audio IC LA42352 but the problem still the same. Could you please help me.

Question edited for clarity.
Question moved from Computers to Skyworth Television.

If it isn't in this link or in the videos, it is not available online. If it is, the wording will find it wherever you live.

https://www.google.com/search?q=skyworth+32w400+service+mode+code+list

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Take is to a second repairer and ask. The first one may have meant it was not economical to repair or parts not available to repair. Skyworth is not a good make.

Skyworth, officially Skyworth Group Co., Ltd., is a Chinese holding company. Its subsidiaries design, manufacture and sell televisions and other audio-visual products. They also invest in properties. Wikipedia

Here is some information on self repair

https://www.fixya.com/support/r29790007-repairing_own_television

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Its main system control memory IC should be checked and replaced. If you wish to get more details, check this site linked below. Pull up older posts there. Check the site with patience, as it has over 2350 posts now. All are related to electronic equipment repair help. If you search the site in Timeslide option, which can be selected from the drop down list at the top left of the display window, it will be easy to locate the related post. You can also do a search by type in the brand name to your device into its search box at the top right of display window. http://electronicshelponline.blogspot.com/

Hi
Jennifer Castillo


Here are some possible locations where to look to :
( Since I have no model for your TV or additional details which you have
replaced)

a) switching IC ( these IC switches the TV to Audio Video In)

b) muting circuits ( there could be one )

c) Check the audio out coming from the Jungle IC (also unknown)

d) check the supply lines of the audio IC (could be +12V, typical)

e) Check the headphones out (if available)


If there is an audio Out, connect an external amp to test.

If audio is present , check again for solder joints to main amp.


Use these as a guide in troubleshooting :

Computer Speakers

Your input is the Jungle IC, search on line for datasheet about it.

same with your Switching IC and Audio IC.


On some audio IC, volume control is included on it.

Let us know what you find or needs further assistance.

If the set is completely dead its usually the power board thats causing it. I would check the fuse to be sure its good ( located next to where the power enters the set) But chances are you will need a power board. If so you can get one from www.tvrepairworld.com if you dont see it listed hit the contact us button and and send the model number of your set and what your needing and they will respond quickly to your inquirery.

Replacing vertical output IC won't poise this type of problem. Check the voltages at the audio output section.

try check the connection of the wires or try to check if you lock the mute button..

Number of power ic 14n02

There are a number of reasons for this type of behavior, but the resolutions depend upon the make and model of the unit involved. Can you please suplpy that info as well as the IC that was changed and I should be able to help.

Thanks,
Dan

Your camera needs audio/video chip IC replacement. further details can be provided if you know basic electronics and have proper tools for replacement of chip IC.