Transformer for battery charger

Have a Ryobi charger, M/N CTH1202, which the 120 volt side of the transformer
is open, no obvious broken wires or overheating. Anyway the following is
stamped on the transformer: ES-66-287-1245. Does anyone have any idea where I
can get a replacement transformer? Ryobi doeasn't service individual partsd
for the charger. Thanks in advance.

On 21 Sep 2003 14:53:07 GMT, WbSearch <(E-Mail Removed)> wrote:
>Have a Ryobi charger, M/N CTH1202, which the 120 volt side of the transformer
>is open, no obvious broken wires or overheating. Anyway the following is
>stamped on the transformer: ES-66-287-1245. Does anyone have any idea where I
>can get a replacement transformer? Ryobi doeasn't service individual partsd
>for the charger. Thanks in advance.

Have you opened it up? Often the fine primary wire parts close
to where it connects to the outside world. Also some transformers
have thermal disconnects inside the paper wrapping.



--
_______________________________________
John E. Todd <> (E-Mail Removed)

Note: Ensure correct polarity prior to connection.

WbSearch wrote:

> Have a Ryobi charger, M/N CTH1202, which the 120 volt side of the transformer
> is open, no obvious broken wires or overheating. Anyway the following is
> stamped on the transformer: ES-66-287-1245. Does anyone have any idea where I
> can get a replacement transformer? Ryobi doeasn't service individual partsd
> for the charger. Thanks in advance.

My charger went shorted on the primary. I just ordered a new charger
as the price was right and rebuilding would be too difficult.

Good luck on finding parts, I tried that and gave up.

Bill K7NOM

I did open the wrapping to check if the wires came off the terminals. Don't
see anything wrong. Wires are connected so I assume the break is internal.

WbSearch wrote:
> I did open the wrapping to check if the wires came off the terminals. Don't
> see anything wrong. Wires are connected so I assume the break is internal.

Another place they put the thermal fuse is against the core, inside the
winding bobbin. or molded into a plastic bobbin.
mike

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Thanks, didn't see any fuse except the 1 amp on the mains input-which didn't
blow.

(E-Mail Removed) (WbSearch) wrote in message news:<(E-Mail Removed)>...
> Have a Ryobi charger, M/N CTH1202, which the 120 volt side of the transformer
> is open, no obvious broken wires or overheating. Anyway the following is
> stamped on the transformer: ES-66-287-1245. Does anyone have any idea where I
> can get a replacement transformer? Ryobi doeasn't service individual partsd
> for the charger. Thanks in advance.


answer: most of the times the termal fuse that inside the transformer
blow. to replace it you have gently and carfuly remove the paper on the primery
side of the transformer (120 [v] side) and will found it replace it white the
rating of temperature.
in other cases the resson is a semiconductur such as diode tra' etc.

WbSearch wrote:

> Thanks, didn't see any fuse except the 1 amp on the mains input-which didn't
> blow.

My unit had two fuses. One was soldered in and looks like a resistor. It
was on the transformer.

Bill K7NOM

Will take a much closer look, thanks.