20 Most Recent
GE JVM1740DM Microwave Oven Questions & Answers
No power
If
your appliance has absolutely no functions at all, remove it from the
mains supply, remove the case and see where the mains lead goes in to
the appliance and follow the cable until you find the main fuse.
ONLY
USE THE SAME TYPE AND RATING OF FUSE TO REPLACE IT.
The usual
cause of this fuse failure is the door switches are contaminated or
sticking. Check the door switches before putting power back on to the
appliance.
Hope this helps.
Does not heat food
Toss out the old magnetron and replace with a new one old chap. Also, make sure you discharge the capacitor before tinkering around inside or it will shock the hell out of you.
Touch pad not working properly
That sounds like the interface controller which is just a little computer chip that cotrols everything and watches the signals from the touchpad is having problems. Usually these will behave like this and then just stop so your touchpad is totally dead. It may take out the time displays as well.
If you have warrenty from GE or the store it will be covered. If you are not covered then it can cost about the same or more as a new microwave as they will have to replace the board. Check your warrenty's, then check the repair cost and check replacement costs. Usually a new microwave is the cheapest.
I've got a GE Advantium 120/Model ZCS1001KSS01, the display will get lines thru it, and comes in and out of view, and will always finish its cycle. however, when you go back to use, it is dead.
The problem with your Display of your GE Microwave/Speedcooker is not the Digitron WB27X10856 display board? The flickering and ultimately failure over of the display is due to the WB27X10861 GE microwave control board which is a rebranded (LG 6871W1A417/6871W1A417A board) which GE then sells as a markup. The princple purpose of this board is to convert (i.e. rectify) AC to DC at various voltage levels needed by the rest of the microwave to run their control circuits in the microwave. A portion of the GE microwave is always on so the AC/DC supplly is always on. Overtime the electrolytic capacitors in a section of the board fail or degrade to a point they the DC suppy starts to produce ripples in the DC power supply which results in circuit board failures. These ripples produce deep spikes of voltage of 120 Hz that the other circuits are sensitive too. I just exmined a failed WB27X10861 board and measued the capacitance of each of the seven electroylic capacitors. Of the 7 capacitors, 2 had failed over time. The others 5 have degraded 10 to 15 percent but still within their design spec. The two that failed, C07 - 1000uF 25 V had a measured value of 207uF and the other C08 - 220uF had a measured value of 13uF. There was no visible bloating on either SAMWHA SG capacitor. Nomally, these capacitors are rated at 2000 hour at 85 degree C. 2000 hr is only 83 days, but since the voltage is less and the temperature is probably 40 to 50 degrees inside the capacitor these capacitors may last 10 years. They harder they work the shorter the lifespan. There are two solutions, either purchase a new replacement control board or replace the failed C07 and C08 capacitors within the failed board with better ones. You can easily buy 10,000 hour , 105 degree C rated capacitors for probably 25 cents more than 2,000 hour capacitor. Most people don't have the resouces to repair a board so buying a new board is their only solution. Don't buy a used board on ebay because a used board is probably on the verge of failure.
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