Very handy. Toasters often appear at Repair Cafe events so having this sort of information is very useful, especially for an expensive and repairable model such as a Dualit.

@michaeldranfield7140

10 ай бұрын

you say these are expensive and it would seem that way but if electrical goods had kept up with inflation like cars have done then £230 for a toaster would be about right, as I kid I worked in an electrical shop and we sold russel hobbs electric kettles for £29.99 which when you think about it as a lot of money in the 1970 s .

The classic fault is a raisin from a teacake tripping the RCD.

@michaeldranfield7140

10 ай бұрын

this could be why the whole element is now enclosed in Mica and there in no exposed heating elements .

Not the same issue, but I have a cheap Sanyo four slice toaster. The centre element popped open. These toasters are not meant to be serviced, but I figured I could spot weld the break back together, If I had a spot welder. I didn't, so made one from a microwave oven transformer. The spot weld repair was successful, and three years on it still works. Cheers Pete' New Zealand.

@michaeldranfield7140

9 ай бұрын

This is one of very few toasters that is built to be repaired, most are not repairable or there are no parts available .

Many thanks for this video. I have just repaired a Dualit toaster which was tripping but couldn't find the fault why. Your video is identical to the fault I experienced. Replaced the elements and all working well. On these particular toasters, it is normally the rotary timer switch which goes. Thanks again.

@michaeldranfield7140

4 ай бұрын

after replacing the elements its important to remember the toaster needs to be pre heated before use as the end elements for some reason seem to take longer to warm up but you should get a leaflet with the new element explaining this , I have not had the timer go faulty yet but I spoke with someone a couple of weeks ago who fitted a new timer and his didn't even last 12 months so I wonder if the quality of these is not up to scratch .

Would have thought it would be cheaper to buy a new toaster - Always amazed what people want mending instead of buying new - thanks for sharing with us

@rscelectrical7091

10 ай бұрын

Take a look at the price of a new Dualit toaster, they're not cheap.

@michaeldranfield7140

10 ай бұрын

British made with all spare parts available and £220 to buy a new one makes this well worth repair .

@vk3hau

10 ай бұрын

I thought the same, till I looked up the price of a new Dualit 4 slice toaster, $499.00 AUD.

@michaeldranfield7140

10 ай бұрын

@@vk3hau in reality this is only one item that has kept up with inflation , all electrical good should be this price , not continuality falling in price .

same as my toaster good unit class 1 test i found food jammed between wires and bad elements when i worked for the company i did lot of repairs on all these toaster

@michaeldranfield7140

9 ай бұрын

The elements on the replacement are totally enclosed within a mica sandwich so this should eliminate leakage through jammed toast .

Shoddy for an expensive toaster cheers for another good educational video mate

@michaeldranfield7140

10 ай бұрын

I think its about 10 years old so its not done bad.

Nice repair what an odd fault, ours normally trips when a current (excuse the pun) from a tea cake bridges across, quick bang on the base of the toaster upside down and it’s all good

@michaeldranfield7140

10 ай бұрын

Maybe this is now why the whole element is enclosed in mica ?

@wisher21uk

10 ай бұрын

@@michaeldranfield7140 very true Michael, ours are uncovered elements

nice repair

@michaeldranfield7140

10 ай бұрын

Many thanks .

Thank you for sharing this interesting and educational video with us. It would be interesting to call the helpline number and see what they say if you were to tell them you had the "non-winged Black Heat" elements.... In this modern day is it still cost effective to repair a toaster?

@rscelectrical7091

10 ай бұрын

This type of toaster yes.

@michaeldranfield7140

10 ай бұрын

must be some reason they changed the design other than having exposed elements, its well worth repairing this toaster as this is an item that has kept up with inflation and its British made with all spare parts available, one of these cost something like £220 to buy new .

It'd make a good video to run a high voltage test in the dark, see if you could see any flashing around the leakage points

@michaeldranfield7140

8 ай бұрын

it would ! , test it until breakdown , I suspect though the leakage would increase with temperature

Nice job Michael, I quite enjoy repairing Dualit etc toasters.

@michaeldranfield7140

10 ай бұрын

Only the second one I have ever done

The old-style elements were prone to dying if you used the toaster to toast a currant teacake - loose currants would carbonise in the heat and create a short circuit with the exposed element. Flash. Bang.

@michaeldranfield7140

10 ай бұрын

Maybe this is the reason they now totally enclose the heating elements ?

Nice repair. I had this same model, bought it in the late 90's and it always worked well. I gave it away a few years ago!

@donny121able

10 ай бұрын

I don't think I've ever had a toaster last me more than a year.

@GreenJimll

10 ай бұрын

@@donny121able I suspect you might not have spent as much on a toaster as one of these. They are very expensive, but they're very sturdy and as can be seen in the video you can get parts for them. Hence the popularity in cafeterias, guest houses, etc.

@donny121able

10 ай бұрын

@@GreenJimll makes sense. .

@michaeldranfield7140

9 ай бұрын

@@donny121able These are over £200 to buy new and all spares are available .

the earth test on a appliance tester is the earth continuity test making sure the earth connection is continus from the plug to the exposed metal work. it hard to see from the angle but it looks like your croc clips isnt making a good connection thats why it failed. the test for leakage is the isulation which it never completed as it stops the test if it fails.

Ooooh I fancy some toast now! 😋

@michaeldranfield7140

10 ай бұрын

says in the instructions these elements are built to run 8 hours a day with no problems .

Back in the day when Dualit toasters were made for commercial use only I guess that earth leakage wasn’t such a problem as often there was no RCD or pat testing, to protect against it. I guess the leakage could be caused by small amounts of carbon getting on the exposed elements over time, the odd burnt slice of toast and crumbs getting into the works.

@michaeldranfield7140

9 ай бұрын

carbon deposits could well be the problem and maybe why the new elements are totally enclosed , it did say in the instructions it could be run for 8 hours a day without any problem so ideal for commercial use .

why didnt you ring the helpline @4:48 and ask about the old elements? It would have been a more interesting video - maybe do a Part 2? and explain how it managed to trip the RCD as well?

@michaeldranfield7140

10 ай бұрын

simple answer is i am repairing for a living and time cost money , RCD would trip due to earth leakage and you have to remember a PAT test is either 250 0r 500v , where as a multi meter runs on a 9 volt battery so there is a word of difference between testing with A digital multimeter and a PAT tester ,.

@steve6375

10 ай бұрын

​@@michaeldranfield7140 Fair enough, sorry. I am not an expert but I thought RCDs needed 20mA ish to trip, so why would the elements alone trip the house RCD? Isn't earth leakage test for a PAT test 240V x 5mA = 50K which is nowhere near the MegOhms you measured on the elements or is there something I don't understand (which probably there is !).

great repair great mystery Grease and carbon from toast silver mica disease😮 mica and elements looks ok mica contaminated

@michaeldranfield7140

9 ай бұрын

could well be ,the replacement elements are totally enclosed so maybe they had problems with this element .

I always enjoy and learn from your videos Michael. It must be a very good toaster that the customer is very fond of - otherwise I can't imagine a cheap toaster would be worthwhile to repair at all!

@rscelectrical7091

10 ай бұрын

No it's not worth repairing the everyday cheap toasters most people have, even if parts were available. But toasters made by companies like Burco, Dualit and Lincat are good quality and expensive so are well worth repairing & parts are usually readily available.

@michaeldranfield7140

10 ай бұрын

this wasn't a cheap toaster to buy, British made with all spare parts available, one of the only things that has kept up with inflation, this would cost something like £220 to buy another .

@Petertronic

10 ай бұрын

@Dick Dualit are commercial grade high end toasters. Design is almost unchanged for decades and they are made to be serviced.

@michaeldranfield7140

10 ай бұрын

@@Petertronic absolutely , you get what you pay for .

So the Earth leakage would be like or the same as a short to ground?

@michaeldranfield7140

10 ай бұрын

Correct , a high resistance short to ground that should not be present .

Congrats Michael, you have succesfully untoasted a toasted toaster 😅 But i have a few questions about this repair. 1:14 with 3,6 Mohm and 240V, there is only arround 66 µA of leakage, how can 66µA of leakage trip a RCD ? 1:57 with 2 elements with a resistance of 26 Mohm between the heatingwire and earth, even if these elements are connected in series to the mains, the leakage is in parallel and is combined arround 13 Mohm, so the 3.6 Mohm is from somewhere else caused during mounting? 5:50 this box with volt and amp meter is a isolation transformer if i'm not mistaken, did you made a modification to get the external RCD working?

@richarddunkling2807

10 ай бұрын

My guess is that the resistance value might be changing depending upon the applied test voltage. A high voltage test from the PAT tester is more likely to track across the leakage path than the less than 9 volt applied test voltage from the DVM.

@michaeldranfield7140

10 ай бұрын

you have to remember I did a PAT test at 500v as opposed to a digital multimeter which runs on a 9 volt battery , buy yes as soon as I started to disassemble to toaster the earth leak on my DVM differed to when I first started .

I wonder if it's a form of silver mica disease. Maybe the metal from the elements is migrating through the mica. I can't see it being anything else really.

@michaeldranfield7140

9 ай бұрын

unless it could be caused by grease or carbon deposits , maybe this was a problem with them and that's why totally enclosed element's are now supplied ?

@radio-ged4626

9 ай бұрын

@@michaeldranfield7140 Now I can see what else it could be LOL. Why didn't I think of that. An obvious reason really. I think I've spent too much time fixing old valve radios.

@michaeldranfield7140

9 ай бұрын

I like old valve radios but most of the AM stations have gone now , last radio I repaired only got two stations , one on LW and one on MW, and I can see FM going the same way in the not to distant future.@@radio-ged4626

@radio-ged4626

9 ай бұрын

Yes I'm afraid I have to agree. It's "progress" as they say.

Silver mica disease lol

@michaeldranfield7140

10 ай бұрын

could well be .

@kevvywevvywoo

9 ай бұрын

only if it contains silver, do Dualit use silver in their elements?

@michaeldranfield7140

8 ай бұрын

@@kevvywevvywoo dont know but I think these elements are of a quality construction , it say on the paper work they can run 8 hours a day without problem so ideal for commercial use .

Carbon tracking internal to the Mica?

@michaeldranfield7140

9 ай бұрын

could well be .

Is your PAT test the same as a Hi-Pot test ?

@michaeldranfield7140

9 ай бұрын

no , PAT is either a 250 volt or 500 volt breakdown test , HI Pot uses something like 5,000V Hi Potential .

I expect heat generation is causing the mica insulation to become unstable over a period of time.

@michaeldranfield7140

9 ай бұрын

Quite possible , the new elements are completely enclosed in mica.