On Mon, 09 Nov 2009 12:17:17 -0500, "Carl Denk" said: > Wife's kitchen oven has a .5" high 4 character plus colon, 7 segment > clock/timer display. The timer only beeps when time expires, there is no > control of the oven. Several of the LED segments are dim, and it they > are not consistent in brightness with time. The clock chips I am familiar with use the internal resistance of the segment drivers as the current limit. And they have only two commons, steered by the 60 cycle AC. There are usually failsafe resistors on those two commons as well as the steering diodes. Based upon your symptoms(different segments dim at various times) those diodes and resistors are the components I would focus on. A slim possibility is one leg of the center-tapped transformer has gotten funky. Cheers, Bob -- http://www.fastmail.fm - mmm... Fastmail... -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist