On Thu, 08 Feb 2007 23:59:28 +0100, Joachim Wunder
wrote:

Hi there,

I have a garage door opener named "Liftboy SMD 3200" which was
installed into my garage back in 1990 (in Germany). I couldn´t get any
information about this garage door opener on the net. The motor
control PCB of it just failed this week. I suspect either any capacity
or the voltage regulator to be the culprit. Does anyone know the
manufacturer of the PCB shown under
http://img255.imageshack.us/img255/9023/cimg0094aq6.jpg ?

Unfortunately, the 40-pin PIC´s type isn´t readable under the sticker
at all ´cause its surface seems to have been scratched off under the
sticker by the manufacturer of the PCB. Yagh. Which PIC is it supposed
to be? There is a Quartz which reads "4.000 SUNNY 7624".

Moreover, the same applies to the 16-pin IC: It´s surface seems to
have been treated by the manufacturer of the PCB, i.e. the exact type
has been completely scratched off on purpose as well. Is there any
way to find out which IC it might be?

I just measured the pins of the 16-pin IC with a logic tester: Pin 14
always stays HIGH at +5V with 2 MHz. Does that point me to a Philips
I2C with a SCL line at Pin 14? If so, which I2C might that be?


Please advise.

TIA,
Joachim

Thanks,
Joachim