on pinside a recommendation was made to me to check the bridge rectifier
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I did the test and one leg beeped so I am now assuming it is shorted based on this video.
I will have to find one of these and do a replacement.
I did notice when I was checking the fuses as well that there was a 5A SB in a 8A SB (F4 location) and a 7.5A in a 5A SB (F6 location), therefore a higher amperage was allowed in to potentially cause damage - is there anything else to check or just order the bridge rectifier at this stage?