uniserver said:

there could be a dead tantalum. 

can you take some good quality pictures of your main board and maybe we can have a look and maybe spot something wrong?

Click to expand...

Yes, is probably. I have tried with the tester (in continuity):

The two caps near psu socket and the caps load energy from tester.

The small five caps near power swich, three is good, one measure "0", and another one measure a fixed value (all other have a variable value... load energy).

Two caps is damaged?

This is a picture of the motherboard before cleaning