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Blown AC - AC Adaptor

Former Community Member
Former Community Member

 

I hope you can help me.

I have a Broil King BBQ which has 3 under lid lights as well as 9 LED lights on the dials.

 Now in the 4 years I have owned this BBQ I have replaced 4 AC -AC Adaptors, all supplied by Broil King.

The adaptors they send all blow from inside out, and I have attached the images.

Some of you have probably seen something like it before and immediately have an idea as to why.

My thoughts are, lack of ventilation and they are packed with a black resin.

 The original Adaptor supplied was 1600mA as were 2 replacements, but the latest one to fail was 1700mA

Unfortunately I do not have a working adapter to enable me to measure the current drawn, but I do remember taking the measurement last year and thought the 1700mA was too low.

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Blown Adaptors

Something sticks in my head that the current drawn was 2900mA, but I could be wrong.
 

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The Wiring Diagram

 

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  • Former Community Member
    0 Former Community Member

    The failure mechanism could well be interrupting an inductive load is causing a high voltage spike that destroys the adapter.  Good designs include Snubbers to absorb the energy but sometimes they are omitted.  Avoid this failure as follows;  only plug the adapter into a switched mains socket. When you have finished with your BBQ first switch off at the mains socket.  Second, wait one minute. Third; Unplug the adapter from the mains socket.

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  • Former Community Member
    0 Former Community Member

    The failure mechanism could well be interrupting an inductive load is causing a high voltage spike that destroys the adapter.  Good designs include Snubbers to absorb the energy but sometimes they are omitted.  Avoid this failure as follows;  only plug the adapter into a switched mains socket. When you have finished with your BBQ first switch off at the mains socket.  Second, wait one minute. Third; Unplug the adapter from the mains socket.

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