Question about Samsung Microwave Ovens
Looked for schematics and related info.
IC chip 102 is a TNY276PN Off-Line Switcher Chip. I believe Power Integrations, Inc makes them. Make sure your power supply Zener diode ZNR101, along with your bridge diodes D101 through D104, (and, for good measure) D105 are all okay just to make sure they didn't short out and blow IC102.
Posted on Dec 01, 2014
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Posted on Jan 02, 2017
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Make sure that the program controller is working if not check power - step down supply, the pads are responding- if not faulty pads- or the door switches, if the switch contact are not good then it will not trigger the processor to switch on the waveguides. If the lights or fan work without any display or action of program being triggered to start then it can be a possible fault on the main board or the processor. Sometimes insect secretion can short the board and display panel and so the processor can work in such an erratic manner. If so clean, solder and reset the board. Now identify the parts by clicking this link: http://www.espares.co.uk/advice/microwave/a/5/141/identifying-microwave-parts.html
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