[?]: repair S7-200 CPU 224 internal power supply ?

[nejx]

I'm trying to repair a S7-200 CPU 224 (214-1AD22-0XB0) with a burned internal power supply.

Does anybody know what is the missing (burned) element L701?

Also, does anybody know the specifications of the internal supply (the pinout).

Thank you!

[nejx]

[Scarch]

L is a coil, probably a filter. Or it maybe a LC circuit, together with the capacitor C701. I would try putting a link instead of the L701 and look what happens.

[CoMod]

L is a coil, probably a filter. Or it maybe a LC circuit, together with the capacitor C701. I would try putting a link instead of the L701 and look what happens.

For ALL: Need photo of original L701 / good CPU .

nejx Need info from N750 chip - possible this is PWM power scheme.
L701 is not LINK
example of PWM power scheme

[zahidj]

L701 is two coils in single case.
you can use two thin wires to complete the circuit its just a filter for supply.

Excuse me my smartphone

[nejx]

Dear Zahidj,

Thank you for your answer. Do you have a product code for the L701, so I can purchase a replacement one?

Best regards.

[zahidj]

sorry dear i have checked nothing is written on component