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Do-It-Yourself (DIY) Question & Answer Forum
Diodes in the Flex Cable
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<blockquote data-quote="Martin Stone" data-source="post: 485427" data-attributes="member: 31724"><p>Hi. My first post on this forum so go gentle with me. I am not an electrician just a DIYer.</p><p></p><p>I recently moved in to my new house and needed to get the boiler serviced. The house is a 70s build and has warm air heating from a Johnson &amp; Starley Modairflow boiler. I managed to get hold of a service engineer who came and did the service but also replaced the flex cable to the boiler (as he thought the lump on the cable was a join). Afterwards he took the heat shrink off to reveal two 1N4007 diodes in-line with the line &amp; neutral. Ever since he removed it the timer makes a buzzing noise whenever we switch it on.</p><p></p><p>All I want to know is what the diodes are doing?</p></blockquote><p></p>
[QUOTE="Martin Stone, post: 485427, member: 31724"] Hi. My first post on this forum so go gentle with me. I am not an electrician just a DIYer. I recently moved in to my new house and needed to get the boiler serviced. The house is a 70s build and has warm air heating from a Johnson & Starley Modairflow boiler. I managed to get hold of a service engineer who came and did the service but also replaced the flex cable to the boiler (as he thought the lump on the cable was a join). Afterwards he took the heat shrink off to reveal two 1N4007 diodes in-line with the line & neutral. Ever since he removed it the timer makes a buzzing noise whenever we switch it on. All I want to know is what the diodes are doing? [/QUOTE]
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Diodes in the Flex Cable
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