buzzing sound coming from speaker when calling

hi all need some help, i have a 3310 that give a loud buzzing sound when calling out.

i have change a about 5 brand new speaker but it still the same, there is this buzzing sound when calling out.

can anyone please advise no what is wrong woth the phone.

Thankz

Hello,

Based from my experience the Buzzing Sound is caused by either a defective or unsoldered ball underneath the COBBA/AUDIO IC. Try reheating it so that you will get good connection underneath or if it still exist, replaced with a new one.

Best Regards,
loloph :smile:

try to verify your filter your ground screening and after that reball the CCONT

thk all

i try it out :)

@micutu

hi have do you verify that gournd on the filter?

thkz

I have try out the the method suggested but still did not work, anyone else can help me?

Thankz.