Carrera Mario Kart 7 does'nt turn on after battery change

Hello. The car was leave accidentally on until the battery got flat. I change the battery for new one but the car didn't turn on anymore. I opened the car and the ceramic fuse is fine the voltage is passing normally troughs the switch and fuse , the led in the back is off put testing is working . I very disappointed because we never treat the car bad and It got damaged. I wish someone give me ideas what can I do?.

Thank you very much.

Update (02/25/2019)

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Hi johanna.andreou

Possible to share more pics inside? check and inspect on the solder, esp to look out for dry solders - cracks, etc.

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Hi Augustine. I put some pictures down as an answer . Thank you for any help.

crwdns2934271:0crwdnd2934271:0crwdne2934271:0

Hi Johanna ... On the second picture showing the circuit... are those glue?

Do you have a multimeter with you?

crwdns2934271:0crwdnd2934271:0crwdne2934271:0

Is like a gel to make the electronic card waterproof. Yes I have multimeter.

crwdns2934271:0crwdnd2934271:0crwdne2934271:0

from the first pic, at the motor area.. it seems that it is a fuse, can you use the multimeter to check?

it has been heatshrinked..... you can use ohms to measure across the "black"

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