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Reply to "TIU Blows fuses with no load"

You can measure them in circuit for shorts, but Alan is almost surely correct, they're shorted.

Measure each of the four TVS diodes, if you find any that read a direct short, they need to be replaced.

It's possible to do this job from the top, but it takes a bit of finesse with the soldering iron.

Here are the locations of the parts in question.  Click on graphic for full-sized version.

MTH TIU TVS Diode Locations


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  • MTH TIU TVS Diode Locations
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