I've got a Jenn-Air electric Expressions wall double-oven. I don't know what the model # or s/n is. Can't find it. It may be WW30430. The LCD display for the clock is basically unreadably dim anymore. In the dark of night I can barely make out the numbers. It works well, seems to keep the correct time. The temperature and timers also appear to work fine. I just can't read the numbers. Suggestions please. Hope it's a DIY fix.