"Robert L. Milton, Sr." wrote in message
om...
I am trying to find a component part number or a schematic for a Blower
Control Board for a 1989 BMW with a 535i engine. The board has the number
275 526. L 06 stamped on it, and the Control Assembly has the name BEHR
and
the numbers 90 . 947 . 00 . 842, E 3264/11 and 1 388 629 . 2 stamped on
it.
There are four (4) blower motor settings on the control switch and only
one
(1) works...High Speed! Anyone that can let me know where to find the
replacement FET transistors on the board would be of tremendous help. The
four (4) FET's are all the same. I have looked at the transistors under a
magnifying glass and can find no numbers stamped on them. I do not know if
they are made by an European Manufacturer or not. I also do not know
whether
the FET's or N or P type or MOSFET's, etc. Any help as to the source of
this
information would be very appreciated.
Thanks!

Maybe a moot point, given the other answers to your question, but if there
are no identifying markings, how do you know that they are FETs? I totally
agree with the others that piece parts such as those transistors, are
virtually unobtanium, especially from the manufacturer. If you're intent on
finding replacement transistors, perhaps your best bet would be to find a
copy of the shop service manual for your car. Be sure that you get one that
has the complete electrical schematics and parts lists. There may be a
partial schematic in there, but in all liklihood, there won't be enough
detail to give enough info to identify the components.
Go to a junkyard and find the complete module. That's probably your least
painful route.

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