Transformer for battery charger

W

WbSearch

Guest
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 <wbsearch@aol.com> 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.
Click to expand...
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 <> jtodd@island.net

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.
Click to expand...
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.
Click to expand...
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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Tek 2465 $800, ham radio, 30pS pulser
Tektronix Concept Books, spot welding head...
http://www.geocities.com/SiliconValley/Monitor/4710/
 
Thanks, didn't see any fuse except the 1 amp on the mains input-which didn't
blow.
 
wbsearch@aol.com (WbSearch) wrote in message news:<20030921105307.08204.00001217@mb-m14.aol.com>...
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.
Click to expand...

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

Bill K7NOM
 
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