1N4007 is 1000V rating. This implies they are in a high voltage circuit. From your photograph, mains AC goes through the diodes to what must be a switching power supply (step-down).
Almost certainly the diodes burnt because of overmuch current being drawn. Three diodes shorted, then the fuse went. This suggests a lot of excess Amperes. 1N4007 family are 1A rating. The fourth diode is probably halfway gone too.
At the minimum you have to replace the diodes. That type is commonly available.
You must allow time for the transformer to dry internally. This might require heating it in an oven for an hour at, say, 120 degrees.
It is difficult to check every component. After replacing the diodes, and before you apply full 220VAC, can you apply a lesser voltage for a few seconds? Then even if the fuse blows, that may save other components. The reason to try it for a few seconds, is because there is no way to be sure the smps can safely operate at half voltage.
If you cannot fix the power supply, you may need to fabricate a substitute.