On Wed, 24 Aug 2005 20:18:13 GMT, Tom MacIntyre
wrote:

On Wed, 24 Aug 2005 17:57:24 GMT, (Gerard Bok) wrote:

On 24 Aug 2005 09:13:10 -0700, wrote:

Garage door opener power supply transformer has an opened primary. It's
actually a burnt coil wire right on the pin. I did manage to solder it
back on but I'm worried it may fail again.

You better be worried about a fire hazard !
There usually is a good reason for a transformer to burn it's
coil.

There is nothing basically wrong with resoldering the part, but
_please_ make sure that there is some thermal cutout device in
the circuit. (And that it is thermically coupled to the
transformer.)

Don't most/all transformer primaries have this?

They should have. (But I wouldn't bet on it.)

Depending on where you live, extra care should be taken when you
do the repair yourself.
If there is a fire, an insurance company may require proof that
you didn't tamper with any fireprotection that was present in the
device.

--
Kind regards,
Gerard Bok