Meat Plow wrote:
On Mon, 30 Oct 2006 06:08:47 +0000, Techguy Has Frothed:


Some of the LCD elements (small squares) on the display are failing to
light. If I push on the end of the ribbon cable where it connects to the
edge of the display driver PC board, the problem elements will start
working until I remove the pressure. This leads me to think that the
ribbon cable's connection pads are failing. Is there any way to repair the
PC connection pads for each conductor of the ribbon cable on the edge of
the board? There isn't any hardware connector for the ribbon cable on the
board. It connects directly to the pads on the edge.


I've done it before but without a picture it's hard to tell what you have.


BTW- This is the second time the display has failed in the same way. I
replaced the entire display assembly (LCD and driver board) about two
years ago. Cost about $90. The replacement worked fine until recently.
Since the home is not occupied in the winter, the heat is turned off.
The temperature can get down to well below freezing for days or weeks.
Could this be why the display has failed twice?

Thanks


I doubt it. Lots of new stock is stored in non climate controlled areas in
the winter.

I would buy a new oven if you can't fix this one for a lot less than 90
bux.

The microwave is built into the cabinets above the stove with an exhaust
fan. A new one would cost at least $200 along with the hassle of
removing and installing.

This ribbon cable is a thin plastic strip about 50-mm wide. It has two
layers. One layer has the conductive traces imprinted on the inside
surface. The other serves as a backing layer to protect the traces. The
back surface of the ribbon cable is peeled away from the conductor layer
at the end of the cable. The backing is glued to the reverse side of the
PC board edge to relieve the strain on the conductor connections. I
can't tell for sure if the ribbon conductors are soldered to the board.
The protective backing makes me think the conductor traces are self
adhesive and the backing has to be removed to attach the conductors to
their corresponding pads on the PC board.

Does this sound like the kind of ribbon cable you repaired? Could you
give me a general idea of what you did to repair yours? I can supply a
picture if necessary.

Thanks