Re: How to repair Garage Door Opener?

[sdickson@xxxxxxx]

Keith,

finally got round to dismantling the remote control again there's a
crystal in there and it's definately rattling. I need help to
identify it please.  Standard 2 leg form and the markings are
26995.00 HT51215.  What does that mean, presume the 26995 is the
frequency in Hz or Mhz.

Thanks,

Steve
--- In ukha_d@y..., Keith Doxey <ukha@d...> wrote:
> [ukha_d] How to repair Garage Door Opener?There is probably a
crystal or
> ceramic resonator in there somewhere to run the oscillator.
>
> Broken crystals is a major cause of remote control failure. The
break when
> subjected to shock, eithere totally or a bit chips off and alters
the
> frequency. Either way .....it stops working as it should.
>
> Keith
>   -----Original Message-----
>   From: Steven Dickson [mailto:sdickson@xxxxxxx...]
>   Sent: 02 August 2001 09:25
>   To: 'ukha_d@y...'
>   Subject: [ukha_d] How to repair Garage Door Opener?
>
>
>   Guys,
>
>   I dropped (from my pocket whilst half way up a ladder, onto
concrete) the
> remote control for the garage door opener last night and now it
refuses to
> work.  It's one of those 'radio' type ones.
>
>   Before I end up destroying the thing how can I get it working
again.  The
> led still lights when the button is pressed.
>
>   I've taken the cover off and there's a few bits that would
perhaps have
> got messed up, two trimmers / pots, and an address bank switch.  I'm
> presuming that I've probably altered the frequency slightly.
There's not
> really allot else in there other than a few smt resistors and
diodes and an
> smt QFP chip.
>
>   I'm going to make a note of all the switch positions and then
change one
> at a time, then try the pots.  Any ides on how I might know if the
thing is
> transmitting anything in it's current state - haven't got a scanner?
>
>   Any help much appreciated.  It's a Kiwi unit and the
manufacturers have
> since gone bust.
>
>   Thanks,
>
>   Steve
>
>
>         Yahoo! Groups Sponsor
>
>
>
>
>   ____________________________________
>   Automated Home UK
>   http://www.automatedhome.co.uk
>   ____________________________________
>
>   Post message: ukha_d@y...
>   Subscribe:  ukha_d-subscribe@y...
>   Unsubscribe:  ukha_d-unsubscribe@y...
>   List owner:  ukha_d-owner@y...
>
>   Your use of Yahoo! Groups is subject to the Yahoo! Terms of
Service.


For more information: http://www.automatedhome.co.uk
Post message: ukha_d@xxxxxxx
Subscribe:  ukha_d-subscribe@xxxxxxx
Unsubscribe:  ukha_d-unsubscribe@xxxxxxx
List owner:  ukha_d-owner@xxxxxxx

Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/