On Sun, 11 Feb 2007 11:28:24 GMT, "Arfa Daily"
wrote:
No problem, at least we know what's going on now. I still would be reluctant
to believe that the bulb is going to have done anything directly to the
board, evn if it is connected to it by way of being relay switched. The
relay contacts are electrically isolated from the coil by virtue of
substantial mechanical separation.
Thatīs what I was convinced too up to the day when the bulb was blown
for the first time. Well, Iīll tell you something, I have one sheet of
paper which came with the PCB, but which only describes part of the
external connectors (i.e. actually only the ones which interface to
the motor on the backside of the PCB). The "funny" thing about is that
this sheet shows a very rough outline of the PCBīs external connectors
and mentions a fuse which is said to be there in the (N)eutral line of
the PCBīs power supply. Ha! I would be glad if there was that fuse
which is rated at 1A F(link). "F(link)" in German means with very
quick response time. And what do I see when I look at the backside of
the PCB? Ha! The manufacturer has simply left out the fuse and has
soldered a piece of wire instead of the fuse holder. Well done.
Now that you've got as far as putting
power on the board, you should be able to look for relay drive activity, by
using the test button, or by fooling the board into thinking that it's
installed.
Thatīs not easy to do, īcause I have no documentation of what signals
the RHS large pins on the frontside of the PCB wait for. So, putting
the PCB into thinking that itīs installed is not (yet) possible for
me. I only know that the external remote control receiver is connected
to two of these pins. Moreover, two external limit switches are
connected to the other 4 pins. I first would have to find out more
details measureing the switches out in the garage.
Arfa
Again, thanks for your kind support.
Joachim