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Anyone replaced a bad TRIAC lately?


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Anyone had a bad TRIAC on a DIY controller that failed for no apparent reason? At DIYC we’ve started recording manufacture and part numbers. If you could check some time when you can look at your controller and post the part number, manufacturer and date code, it would be a big help in narrowing this down.

It appears to a possible bad batch from a group buy so far. The problem TRIAC is manufactured by ST Micro and marked Chn 912, (BTA04-700T). I posted a picture of the type others have been replacing.

Attached files 224975=12448-BTA04-700T.jpg

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