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Re: Conformal coating of circuit boards(All Audi content)
In a message dated 97-02-28 20:10:21 EST, you write:
>At one time, if at all did Audi begin to put a conformal coating on the
>engine management circuit boards?
The ECU in my '83 UrQ was coated, but I still got a corrosion path at a
defect. It happened to be at an address line underneath the ROM and it
caused strange behavior indeed.
Fortunately Audi inhibits the spark unless it occurs in a "window" of the
signal from the Hall sensor on the distributor. Once I discovered it, it was
easy to fix I then baked the ECU in my oven and "conformal coated" it with