"Ron" wrote in message
...
After scanning many message boards about Sears/Craftsman garage door
openers, I found a lot of problems with their logic boards.

Yesterday I had a Sears technician troubleshoot a chattering originating
from the long screw in the channel (3/4hp screw drive model), and he
mentioned not to use 100w light bulbs due to excessive heat, especially on
the logic board side -- the one where the wires connect. Even though my
GDO is rated for 100w bulbs. He says the heat is the main cause of logic
board failure. He recommends only up to 60w.

For some reason, that makes a lot of sense. Indeed with the 100w bulb in
there, the plastic casing even with the metallic reflective foil became
very hot.

SO, reduce the heat by using lesser wattage bulbs. Hmm...wonder how
compact flourescents would work.

BTW, the chattering...he squirted WD-40 (?!?) and declared the sound
as normal. Sucky tech, but at least got some good advice from him.
I use a compact fluorescent because vibration on opening and closing caused
short life on an incandescent lamp bulb. W W