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In Reply to: RE: Perhaps posted by dd168168 on February 28, 2015 at 11:22:43
Not too difficult if you have decent soldering skills,and can get at it easily. Note there are two of those IC's in the timing circuit. Best thing is to replace them both.
Dan Santoni
Follow Ups:
Thanks. Which brand shoul I get?
The 555 timer is pretty generic. TI and Fairchild are probably the most popular.
Dan Santoni
Thanks for the quick anwsers. I have not opened the cover yet. But from the pictures online, it seems that NE555 was installed on the socket. It might be a lot easier job, just take the old ones out and insert the new ones.
Edits: 02/28/15
I've seen them with and without sockets. If you have the sockets then it's a five minute job. Make sure you orientate the IC the right way.
One other thing to look at if the IC's still don't work is C24. It is a 33ufd 16V capacitor. If that's failed the timer will think it's muted. The value controls the time it takes to un-mute.
Dan Santoni
Given the age it might be prudent to replace it if it is an electrolytic.
Dave
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