I have seen the use of a high voltage or an electric discharge recommended by more than one source, as a way to re-establish continuity for open interstage transformer windings or for horn speakers. The theory is that a crystallized solder/copper interface is responsible for the open circuit.

What is not clear to me is how to actually do this. Does anyone have any experience or advice to share?

Thanks

Lode Swinnen
lswinnen@aol.com

Lode

Use a power supply and monentarily connent the open winding across this voltage. 100 volts will usually work. This has an arc welding effect and sometimes makes a connection.

I have even found cases where the high ohm's scale on a meter causes a connection. Many meters use a 22 1/2 or 30 volt battery on this scale while lower scales have 1 1/2 volts.

Repairing coils this way doesn't always hold up over time but it's worth a try.

Norm

: I have seen the use of a high voltage or an electric discharge recommended by more than one source, as a way to re-establish continuity for open interstage transformer windings or for horn speakers. The theory is that a crystallized solder/copper interface is responsible for the open circuit.

: What is not clear to me is how to actually do this. Does anyone have any experience or advice to share?

: Thanks

: Lode Swinnen
: lswinnen@aol.com

Norm,

Thank you for the advice. I'll give it a try.

Lode

: Lode

: Use a power supply and monentarily connent the open winding across this voltage. 100 volts will usually work. This has an arc welding effect and sometimes makes a connection.

: I have even found cases where the high ohm's scale on a meter causes a connection. Many meters use a 22 1/2 or 30 volt battery on this scale while lower scales have 1 1/2 volts.

: Repairing coils this way doesn't always hold up over time but it's worth a try.

: Norm

:

: : I have seen the use of a high voltage or an electric discharge recommended by more than one source, as a way to re-establish continuity for open interstage transformer windings or for horn speakers. The theory is that a crystallized solder/copper interface is responsible for the open circuit.

: : What is not clear to me is how to actually do this. Does anyone have any experience or advice to share?

: : Thanks

: : Lode Swinnen
: : lswinnen@aol.com