Author Topic: st micro l387a  (Read 1652 times)

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Offline merser

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st micro l387a
« on: November 07, 2015, 03:51:57 am »
I have this oven controller that has failed and after testing voltages and various components without finding issue heated it up in another oven and tried and it worked. Once it cooled down it went basically dead again except for clicking noise through piezzo and faint flashes on digits of display.
So I got my butane solder pencil and heated various components one at a time until I discovered the l387a when heated would allow the board to come to life.
The voltage in and out is ok (+12 and +5) so I can only think the issue is in the reset circuit.
Does anyone know where I can get one fairly quickly or a suitable substitute. It appears to be an obsolete part.  :(

Offline tec5c

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Offline merser

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Re: st micro l387a
« Reply #2 on: November 08, 2015, 05:30:23 am »
Thanks. There are a few on ebay but none local. I guess I will have to be patient.


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