A nice fridge with an annoying beep and fault!
Had this fridge for around 11 years now and it was not fit for purpose from the outset needing manual defrosting. Anyway, I'll cut to the chase.
It has a Magnetek 4080-02/9 power board for which I cannot find the service manual or any diagrams anywhere.
So... I buy a Peak ESR70 the other day after reading another thread (please feel free to read my introduction if interested) and decide that the fridge would be a good place to start.
It has a variety of caps on there. Elna, Teapo (which I note is in your bad list) and some others. I will identify them as necessary.
The symptoms are that the front LED display simply keeps flashing and the unit beeping. I cannot access the menus to clear the beep and set any temps on the fridge or freezer. Still working (in a fashion) but loathed to throw it out.
I have very limited electronics knowledge and am here to learn and grow and perhaps one day maybe even answer a question that is useful to a newbie (but that is probably a long way off).
I discharged all the caps and proceeded to measure them. The Peak ESR70 comes with a very limited typical ESR value chart which ends at 250V. I have a 400V capacitor in there so have NO idea what the ESR should be.
To kickstart this thread, I wanted to ask about one brown coloured cap in particular. It is rated at 100V 2.2 uF yet it is reading 529.2 uF with an ESR 0.58 Ohms.
From the very limited knowledge I have gleaned so far, this clearly isn't right but how?
Without taking the board out again today and looking at the capacitor manufacturer and trying to find the ESR for it on their site I am sure its tolerance isn't +25000%
Any ideas as to what may have gone wrong with it. I thought caps were supposed to deplete if anything over time?
Had this fridge for around 11 years now and it was not fit for purpose from the outset needing manual defrosting. Anyway, I'll cut to the chase.
It has a Magnetek 4080-02/9 power board for which I cannot find the service manual or any diagrams anywhere.
So... I buy a Peak ESR70 the other day after reading another thread (please feel free to read my introduction if interested) and decide that the fridge would be a good place to start.
It has a variety of caps on there. Elna, Teapo (which I note is in your bad list) and some others. I will identify them as necessary.
The symptoms are that the front LED display simply keeps flashing and the unit beeping. I cannot access the menus to clear the beep and set any temps on the fridge or freezer. Still working (in a fashion) but loathed to throw it out.
I have very limited electronics knowledge and am here to learn and grow and perhaps one day maybe even answer a question that is useful to a newbie (but that is probably a long way off).
I discharged all the caps and proceeded to measure them. The Peak ESR70 comes with a very limited typical ESR value chart which ends at 250V. I have a 400V capacitor in there so have NO idea what the ESR should be.
To kickstart this thread, I wanted to ask about one brown coloured cap in particular. It is rated at 100V 2.2 uF yet it is reading 529.2 uF with an ESR 0.58 Ohms.
From the very limited knowledge I have gleaned so far, this clearly isn't right but how?
Without taking the board out again today and looking at the capacitor manufacturer and trying to find the ESR for it on their site I am sure its tolerance isn't +25000%
Any ideas as to what may have gone wrong with it. I thought caps were supposed to deplete if anything over time?
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