90 Accord and broken power door locks

So, here is my situation. I have a 1990 Accord EX coupe. When I
bought the car, the power door locks worked. Worked fine for about a
year. Then, one day they stopped working. I didn't think it was a
problem because they working the day after that. They worked fine for
about 2 weeks and then they went dead again for about 2 days. This
kept happening; the length of them going out kept getting longer and
the interval between them going out was getting shorter. Then, one
day they just stopped working and haven't worked in over a year.

So, does anyone have any ideas of what is wrong? What could I do to
do diagnose the problem? How can I fix it, preferably by myself?

Thanks.



Eric Hollins