Dell India — Dell 13 7359 inspiron premium laptop problem in speaker

Address:	Gurgaon, Haryana
Website:	dell.in

I purchased a Dell 13 7359 inspiron premium laptop which was good in the begining, but now


The issue,
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is that, the speaker of the laptop I have starts making JHAR JHAR JHAR noise when I am playing some music etc and in the mean while the power is switched from AC to DC. This may happen due to power cut out due to manually removing the charging adaptor.

My endevour:
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(1) I had complained for service/ repair to its toll free number.

What Dell Did?
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(1) They sent an engineer who after troubleshooting, came to a conclusion that there was a fault.
(2) after, 5-7 days, They sent Motherboard, DC input cable and a pair of speakers, which were replaced and still the problem persisted.
(3) the issue was escalated to higher support person, who after diagnosis (online) told that the problem is not an issue and it happens, when you switch between power sources and it is final.

The MAIL they sent:
Service Request Number[protected].

"As discussed over the phone, we have checked the settings in your system, and the distortion of sound while switching the power supply is happening because hardware needs a little time to switch from power from adapter to power from battery and this is not an issue with the system, this is as per its design. We do not need to replace any hardware parts for the concern that you have reported and we are closing the case at this time."

I am still facing the issue, and the problem is annoying. Please HELP.