No sound no display

in this video am giong to show you how to fix your home theatre system cost, 100 to 150$ with an old mp3 FM radio cost 10 to 14$,
Text the home theatre, no sound no display, only LED light On.
Text the mp3 FM, displayed Ok.
i open the home theatre show what is bad, and unplug the wire.
I open the mp3 fm remove the mp3 FM board,I show to camera Ok,
get 5v phone charger for the mp3 FM board,
connect the charger from the supply switch I showed to the camera,
plug inn the unplug cables from the old Damaged board I showed you in the home theatre, plug the adaptor to the new mp3 board don't power yet, follow all cable colour codes to avoid mistake, don't remove the old board from the body to avoid creating holes,use the old damage display PCB to hold the new display mp3 board, check the position,get a speaker and text, you can see the display and hear the sound. in the video,connect to Bluetooth, use any mp3 remote only to operate.
Thanks for watching, pls subscribe for more videos
‪@TH-cam‬ ‪@ARYDigitalasia‬ ‪@HarPalGeoOfficial‬

[@dikechristy8590]

What could be wrong when a particular frequency on FM stops working but other frequencies are working

[@empirictv]

It could be lost of range, either from the receiver or from the transmitter. Also consider the location of the radio frequency. Pls don't touch any coil or capacitors around the FM board

[@Juliuske567]

Plz no beginner can understand what you are doing

[@richmonduchenna6516]

Please my is displaying but no sound... What can I do

[@empirictv]

Check the audio board it's a mono pc with the FM radio. Not the sound board