Is there any information around about how to work on the battery powered illuminator on a Meade 9mm eyepiece? I bought it used and it's never worked right since I've had it. The dimmer doesn't really work right, it will just all of a sudden come on bright. Now it does not come on at all and the switch seems to now go past the original "off" position. I'm wondering how to open it up and what I will find inside. I can't imagine it's too sophisticated. Nothing comes up on any searches I've tried, the only replacement I can seem to find from Agena is out of stock. Anyone have any "bright" ideas?