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by brian_mk
Sat Aug 21, 2021 12:18 pm
Forum: Electrics Forum
Topic: How to test an AC/AC doorbell transformer?
Replies: 16
Views: 2843

Re: How to test an AC/AC doorbell transformer?

You have two choices: Either open up the cases and try to diagnose and fix the problem yourself or return both supplies for a refund or replacement. It could be something simple like a connector or soldered joint. Opening up the cases may be difficult or impossible if they are glued. It would also p...
by brian_mk
Sat Aug 21, 2021 9:58 am
Forum: Electrics Forum
Topic: How to test an AC/AC doorbell transformer?
Replies: 16
Views: 2843

Re: How to test an AC/AC doorbell transformer?

It sounds like a mains fuse inside the power supply may have blown or the transformer primary winding has failed open circuit. Some transformers incorporate a thermal protection device that may have tripped if there was a short on the secondary. It's very unlikely that this would have been caused by...
by brian_mk
Fri Aug 20, 2021 10:56 am
Forum: Electrics Forum
Topic: How to test an AC/AC doorbell transformer?
Replies: 16
Views: 2843

Re: How to test an AC/AC doorbell transformer?

I would start by checking that the 13A mains socket is working by temporarily plugging another appliance such as a table lamp into the same socket. If that's ok then check the resistance of the transformer primary and secondary windings using the multimeter (obviously with the transformer not plugge...
by brian_mk
Tue Aug 17, 2021 5:24 pm
Forum: Electrics Forum
Topic: Old Hygena HG913 oven repair
Replies: 2
Views: 1610

Re: Old Hygena HG913 oven repair

I found someone looking for exactly the same information in another forum. His post dates back to 2004 and relates to an Electrolux ECD 22 dishwasher but it is the same device:- ELTH Type 261 16(3)250 T 130 K See:- m He reached the conclusion that it should switch off at 130 degC. However, I am not ...
by brian_mk
Fri Aug 13, 2021 9:31 am
Forum: Electrics Forum
Topic: Old Hygena HG913 oven repair
Replies: 2
Views: 1610

Old Hygena HG913 oven repair

I have an old Hygena HG913 oven. A few days ago the Temperature Overload Cutout (TOC) attached to the rear of the fan failed open circuit. The oven no longer gets hot even though the fan works and the 'oven on' neon is illuminated. The oven element itself is fine. It looks like a rivet that holds on...
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