My kitchen stove got BadCap-itus!
The clock/timer suddenly started keeping crazy time, the cooking timer went kaput and when a key was pressed to set the time, the "beep" sound was weak and uneven indicating rapid voltage fluctuations.
So after a month or so of being driven nuts without a good cooking timer apart comes the stove.
The timer has an external, soldered-on power board that can pivot over on the leads protruding from the timer board. This board has 3 'lyctic caps on it, a 1000/25 Samsung SSL, a Samxon 100/16 GF and a Samsung 470/16 SSL. All caps appeared fine with no sign of bulging or leakage.
The ESR meter saves the day! The 470/16 has something like .50Ω which was apparently just enough to ruin my cooking experience. The other caps were at .06 and .09Ω but I replaced them anyway with Nichicon PW.
Plug it all back in and just like new! Keeps time and a nice loud Beep.
I'm not so impressed with the quality of this thing which was made by an American company in Mexico.. It had several cold joints and the circuit traces were fragile and poorly adhered. Even HKFA Co. makes better boards than this thing.
The power board has the 4-diode treatment and a row of big power resistors.
A SMPS would probably save me some money over time as those resistors look like 2w each which is just warming up the back of my stove 24/7.
Yay! One less project!
Have Fun,
Keri
The clock/timer suddenly started keeping crazy time, the cooking timer went kaput and when a key was pressed to set the time, the "beep" sound was weak and uneven indicating rapid voltage fluctuations.
So after a month or so of being driven nuts without a good cooking timer apart comes the stove.
The timer has an external, soldered-on power board that can pivot over on the leads protruding from the timer board. This board has 3 'lyctic caps on it, a 1000/25 Samsung SSL, a Samxon 100/16 GF and a Samsung 470/16 SSL. All caps appeared fine with no sign of bulging or leakage.
The ESR meter saves the day! The 470/16 has something like .50Ω which was apparently just enough to ruin my cooking experience. The other caps were at .06 and .09Ω but I replaced them anyway with Nichicon PW.
Plug it all back in and just like new! Keeps time and a nice loud Beep.
I'm not so impressed with the quality of this thing which was made by an American company in Mexico.. It had several cold joints and the circuit traces were fragile and poorly adhered. Even HKFA Co. makes better boards than this thing.
The power board has the 4-diode treatment and a row of big power resistors.
A SMPS would probably save me some money over time as those resistors look like 2w each which is just warming up the back of my stove 24/7.
Yay! One less project!
Have Fun,
Keri
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