I have model# 88202cop. The battery lost it's power and it wasn't replaced for some time, the battery corroided and the circuit board lost some of the green stuff. So I need to get a new "guts" of the clock. Is this possible for joe homeowner to replace and can I get the parts cheaply enough to make it worth while to fix the clock? thanks, Bill

My opener was flaky- intermittently going on and off. I could bang it and it would do the same thing so this suggested a loose connection somewhere. This wasn't a unit with the battery backup.

Safety note- don't take apart unless you first unplug the entire unit!!! I took it apart and there were two circuit boards- a logic board and a power supply board (latter was smaller of the two). I took out the power supply board and examined the solder joints on the back. I found one that was cracked (this soldered a connector pin), and another that looked like it wasn't good (not shiny). I resoldered and this fixed the problem.

Another time my wall control acted up (this has the IR sensor and buttons). There is not much room around the screws on the backside for connecting the wires. One of the wires was a little long and shorting out to a nearby component.

Hope this helps someone with similar problems.