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Re: Blown Range lights - Damage to Circuit Board
Frank7580 and Guest:
We see (and repair) this a lot. The problem is on the control panel, which we regularly repair nationwide by mail for $39.95 postpaid.
This light failure often occurs when a bulb goes out and the filament shorts, or when the bulbs are removed or installed without first unplugging the oven from the power line. Either can cause such a failure on the controller.
This can often also affect the exhaust fan operation, too. The lights and fan can be inoperable or stuck on too.
Details of our service and critical safety information and disassembly information is at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk
We're happy to help and we appreciate your thoughtful rating of our answer.
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probably caused a short while replacing the bulb(s) and, causing damage to the circuit board. pull the board out and carefully check for burned foil traces; and rebridge with solder. it may or may not work. always unplug the microwave when replacing the range lamps.
This error code
on a Kitchen Aid range indicates a keypad short on the Electronic Range
Control (ERC) board. This is the clock/timer on the operator console.
The recommended fix is to replace the ERC. You can generally find
replacement parts at these websites:
All these sites offer great service with competitive pricing, so shop and compare.
Replacing an ERC is not a difficult repair and can be accomplished by
the average do-it-your self offer. If you decide to order the part and wish
to repair this on your own, follow these steps:
1. UNPLUG the range. Dangerous voltage is still present inside even with the range turned off.
2. Pull the range away from the wall and turn the unit around so you can access the rear panel.
3. Remove the screws on the back of the operator console.
4. Carefully disconnect the connector plugs to the ERC. Take note of
how they are connected, so that you can reinstall them correctly.
NOTE: The connectors are usually color coded with the colors printed on
the circuit board. However, if the colors are not printed on the board,
write them down. (A digital camera also comes in real handy for this).
5. With the connectors removed, remove the mounting screws to the ERC and the assembly will come out.
NOTE: Most replacement ERC boards do not come with the overlay. This is
the plastic pre-printed number display. The overlay can easily be
peeled off and re-used. Just make sure you properly orient the overlay
so that you don't inadvertently place it on the new board upside down.
If your existing overlay is damaged, you will need to order separately.
6. Install new ERC using the steps provided in reverse order. Minimize
handling the new circuit board with your bare hands to avoid damaging
the board. I hope this information helps you.
Hi, Unfortunately the unit will have to be opened up to check any further problems. If you can, check inside on the power circuit board for blown fuses or any other component which seems to be burnt. It's not always possible to see if a component is blown without testing it but the problem is almost certainly on the main power board. Best wishes, Graemevm
To Person who answered Best Solution above,
This worked nicely thank you.
After removing my circuit board the long silver strip was intact, however where it makes the turn about quarter inch, the solder or foil seam had a break in it which I filled-gap with solder.
My guess is if the "foil" or thin 2" long strip is serving as a fuse, it would still melt again even with my solder on the shorter section, in event of overload. Also seen on the plastic area directly behind where the circuit board would mount, and where the "foil" was blown, was a small blackened area as evidence of the blown foil. 2 new bulbs and all is well again Thanks!
This usually indicates damage to the circuit board of the control unit assembly.
We repair these control units nationwide for only $32.50 postpaid.
If you decide first to remove or replace the bulbs or check the sockets or wiring, please unplug the microwave first. Failure to do that is usually how the boards get damaged.
If you or a friend decide to work on it, we have *critical* safety and disassembly info at our site, which is linked at our listing here on FixYa: http://tinyurl.com/yzjozk
You can usually find helpful exploded view diagrams and order parts by entering your base model number (without the suffix) here: http://tinyurl.com/gv383
BUT - I don't recognize NN-2501 as a valid model number. Could you confirm that?
That would almost certainly be a problem on the control circuit board.
If the bulbs happen to short / blow out or if they are removed or installed while the microwave is still plugged in, there is often an arc which causes damage to the board.
We repair regularly these boards for such problems for $32.50 nationwide.
The problem is damage to the control circuit board.
This damage is usually caused by removing or installing light bulbs without disconnecting the oven from the power line first.
We regularly repair these GE / Samsung smart boards for this problem for customers from across the country for $32.50.
We have an important file called "safety.txt" which you can find by doing a search for "microwave safety.txt" on Yahoo.com.
It's important information to consider before proceeding.
When the varistor fails, it will be shorted. That will cause the whole oven to be "dead". It's almost certainly fine.