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My problem is model no M1719N SAMSUNG INTERNAL PCB VOLTAGE WITCH VOLTS SYNCHONOOUS MOTOR AND TIMER PLEASE RESPONCE THANKS FAROOQ

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The lights and timer go on, but nothing from the fan, turntable nor noise from the magnetron


please follow this test and fix it. God bless you

  1. Check the power diodeThis electronic component is responsible for transmitting current in one direction. If the diode becomes defective it will cause your microwave to not heat. Test the diode and replace it if necessary.
  2. High voltage capacitorResponsible for storing electricity, this part is a key component in any microwave. Remove, discharge, and test the capacitor to determine if it requires replacement.
  3. Damaged magnetronResponsible for generating waves and producing heat. When your microwave is no longer heating properly, replacement will be required.
  4. Thermal CutoffsExamine the thermal cutoffs on both the magnetron and the oven itself. Take off one of the leads and using a volt-ohm meter on RX1, check the terminals. If you get a result other than zero, replace the thermal cutoffs.

Nov 09, 2013 | Microwave Ovens

1 Answer

Opened door ,oven light blew out,turntable motor stopped also noticed power button next to timer button shows nothin when you try it. but you can put in cup of coffee it will heet up.


This is a fairly easy one. First, make sure the turntable coupler under the glass dish is not broken. Second, on the control board, find the turntable relay and test for voltage. Some turntable motors are 24 volts DC, so make sure your testing the correct voltage. If no voltage from the control board, then replace the control board. Otherwise head towards the turntable motor.
On OTR models, you can get to the motor by un-screwing the bottom panel on the microwave. On countertop models, there will either be a knockout or screw on access panel. Check for voltage at the motor. If no voltage, check the wiring back towards the control. If voltage, then replace the turntable motor. The component list below also shows how to test a turntable motor.
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Apr 02, 2013 | Microwave Ovens

1 Answer

How many amps a fuse in breville mixer


Not knowing the model of the mixer you are talking about, or where you are in the world and the voltage you are running at, I can't tell you. But I can tell you how to figure it out. Simply do this:

You obviously know what your main power supply voltage is, either 240 volt or 110 volt
You can look at the mixer and there will be a data sticker with the wattage of the motor on it

Watts divided by volts = Amps

Therefore, if you have a 500 watt mixer on a 240 volt system 500/240 = 2.083 so use a 3 amp fuse
a 750 watt motor on 240 volts 750/240 = 3.12 so use a 5 amp fuse
a 500 watt motor on a 110 volt supply 500/110 = 4.5 so use a 5 amp fuse

etc etc etc.....

Hope this helps

Jul 26, 2011 | Microwave Ovens

2 Answers

GE JE1860WH04 oven - between one and two years old. Timer runs, but tray does not rotate and food does not heat. Tried unplugging and plugging back in - no help in the manual.


Firstly, do NOT attempt self repair of any microwave oven unless you understand the risks involved. Removing the cover exposes one to the magnetron and it's associated high voltage components. Lethal voltages exist when in operation.

Now, to your problem:
All microwave ovens operate on very similar principles, where the front panel controls switch power to the high voltage transformer (and then to the magnetron) and also any other related components, such as the turntable motor, and the internal lamp.
Most ovens have at least two protective devices that operate in cases of specific component failure.
These include: (1) Protective fuses that rupture when a short circuit condition exists, and, (2) a thermal cutout (mounted on the magnetron) that removes power in the event of overheating (usually magnetron cooling related). Unfortunately you did not state whether the control section is push button or the simpler rotary control version.

In the case of a push button (or digital) control system, it is quite possible that the circuit board has failed, and is not switching power to the rest of the microwave oven, despite the timer appearing to operate, or a protective fuse has ruptured.
In the case of a mechanical timer, either the timer has developed an internal fault (and is not switching power though) or a protective fuse has ruptured.

Thermal cutout devices, usually only operate when the magnetron exceeds a predetermined temperature (usually in the vicinity of 100 deg Celcius), and most of these thermal faults occur due to the cooling fan failing to provice adequate airflow though the heat distribution fins of the magnetron.

A volt meter would assist greatly in fault-finding, but beware of the high-voltage section, where voltages in excess of 3000 voltas are present.

Unless one is proficient with these devices (and fully comprehend the associated risks), I seriously recommend referral to a trained service provider.

Jun 08, 2011 | Microwave Ovens

1 Answer

I have a Samsung microwave model SMH7177STE/BE. Will only heat a few minutes before and shut off, now there is no heat. I am a licensed elect. but no experience with microwaves and having difficulty...


Its tripping a high limit most likely. Be careful there is 2100 to 4000 volt high side with a capacitor if its not an inverter. The standard components consist of noise board, fuse, touch panel and power controller, high limits, door switches, whipper motor, fan, transformer, capacitor, transformer, magnetron, diode, plate rotator.
Discharge cap (for safety and further testing).. Test fuse; if fuse tests blown test door switches first. Test limits. Check amp draw with slow blow fuse; open door to stop unit and again discharge capacitor. Test resistance to ground on whipper, fan, magnetron, light. Test resistance lead to lead (measurable on motors/coils/magnetron). Test capacitor in ferrads, compare to spec on print. Check diode forward and reverse. Test output voltage from power control board to transformer. Test transformer coils.
Best of luck and play safe; dont test voltage output from the transformer, voltage at capacitor or magnetron.

Aug 03, 2010 | Samsung Microwave Ovens

1 Answer

Model MW1080sta Problem: Turntable won't turn at all. Trying to change synchronus motor. What voltage should it show when I plug in power? Wanted to test before replacing it.


Most ovens that I have repaired the turntable runs from 115 volt ac. Most ovens have a schmatic on the inside, look at it and follow the motor leads back to the sorce of power and check any switches or interlocks that it may go through.
good luck

May 17, 2008 | Samsung Microwave Ovens

1 Answer

NEED PART DE41-10330A PCB AND/OR SCHEMATIC


Looks like the new part number is DE91-10368A and it's available for $90.25 from http://www.samsungparts.com

If you'd like the board repaired, we do that for $39.95 in most cases.

We have *critical* safety, disassembly, and troubleshooting info at our site, which is linked at our listing here on FixYa: http://tinyurl.com/yzjozk

Nov 05, 2007 | Samsung MW5580 Microwave Oven

1 Answer

My PCB transformer primary is always blowing off what could be problem


Is your line voltage correct? That needs to be measured, perhaps even monitored. Is it possible you have installed 120 volt replacements into a 220 volt model? Otherwise, there is a component shorted on the control board, such as a rectifier diode, zener diode, filter capacitor, or transistor. This would call for old-style troublehsooting. It's possible you have a bad sensor, but I doubt it. They could be disconnected or bypassed for test purposes.

Apr 09, 2007 | Panasonic NN-C994S Convection/Microwave...

2 Answers

NATIONAL NNN -C 2000P LOW VOLTAGE PRIMARY GETS FREQUENTLY OPENED


There is something on the secondary side which is drawing too much current. I would check all electrolytic capacitors, zener diodes, transistors, and voltage regulators.

Mar 27, 2007 | Panasonic NN-C994S Convection/Microwave...

1 Answer

High voltage surge


We regularly repair these GE / Samsung boards from customers nationwide with just such problems for $32.50. If it's too bad off, we can get this board (# WB27X10466 remanufactured) for $145. A new board runs about $180. We would need the full model number with suffix.

Sep 04, 2006 | GE JVM1490 Convection/Microwave Oven

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