This time I won't explain how to do it .. I'll show you!
Remember that it is a delicate process, you must always be careful not to damage your computer, take your time.

These are the capacitor values on A1200: (Board Rev .: 1D4)

Capacity Voltage Condenser name
10uF 25V C214, C306, C407
22uF 25V C303, C304, C324, C334, C459
47uF 16V C821, C822
100uF 16V C235, C236, C239, C409
470uF 16V C237, C307
1000uF 20V C2408, C811

In the photo I highlighted the replaced capacitors:
 in red  those damaged or that had begun to ruin the track below,
 in green  the capacitors tested with ESR and good results ed
 in orange  those replaced but not tested but showing no signs of leakage or swelling.

The result was that obviously not all capacitors were thrown away, but with the passage of time the situation would get worse and probably others would be ruined. On these machines, especially if they use these types of inexpensive electrolytic SMD capacitors, it is always recommended to take a look at them to prevent even more serious damage from being created.

Recapping a machine is usually not complicated, it depends on how many capacitors we have to replace and the space we have to work on it, it is however an operation to be performed carefully especially to avoid damaging the traces of the board.
Keep the diagram handy so you can check that everything is correct.

Post Views: 826