Question about Frigidaire FMV156DC Microwave Oven

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Key ribbon How di I remove the key ribbon from a frigidairFMV157D

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I have uploaded a handy guide with pictures showing you what's typically involved.

You can usually find helpful exploded view diagrams and order parts by entering your full model number here.

There should also be a "mini-manual" hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting & testing.

At our Web site, we have a video available showing how to remove a typical over the range control panel assembly in under
5 minutes.


If you would like to have us do this repair for you, we do that for $39.95 plus part costs.


Feel free to contact me directly (and please remind me of your full model number from the tag on the unit) for more information & help.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

William E. Miller, AS-EET
prototech@usa.net
http://www.microwavedisplay.com

Posted on Feb 14, 2009

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My microwave says "SE" or "5E" and won't work. What does this mean?


The problem lies with the mylar ribbon cable that connects the Keypad to the circuit board. The Mylar ribbon cable folds back onto itself and are touching. Over time the mylar 'breaks down' electrically and the wire traces in the mylar will 'arc' onto the other mylar ribbon cable. The solution is to separate the two mylar ribbon cables using paper and electrical tape. I've done this on several microwaves (not just Samsung) and it has worked every time. Patience and about 20 minutes is all it should take to fix it. I've described below how I did it for the SMH9187ST Microwave Good luck to all.

1. UNPLUG THE MICROWAVE !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

2. 1. Remove the top front cover by removing the (2) screws that are along the top edge (phillips).

3. 2. Slide the cover to the left about a half inch (there are tabs holding the cover in place) and remove.

4. 3. Remove (1) screw from the top of the Keypad Housing (phillips). Lift the Keypad Housing upwards about half an inch (there are tabs holding the Keypad Housing in place) and remove. Be careful of the metal grille that is just above the Keypad Housing as this may fall out since it is being held in place by the Housing.

5. 4. Be careful not to pull on the wiring harnesses that are attached to the Housing. Carefully unplug the wiring harness that has the RED connector on it from the circuit board. Carefully unplug the small white connector that has the mylar ribbon cable on it (this cable is see-through and you can see thin, flat wires in it).

6. 5. Remove (4) screws that are holding the circuit board onto the Housing.

7. The Housing should now be free of the circuit board and wiring harnesses. It's safe to let the wiring harness/circuit board hang free, but caution should be used anyway.

8. 6. Remove the thin metal frame from the Housing. There are (4) plastic tabs holding the frame in place. Using a small screw driver pry one side of the frame away from the housing (try to do this to the side that has smaller plastic tabs). When this side of the frame is free of the Housing you have to lift the frame out at an angle to remove. It might put up a fuss, but be patient and be gentle with it since the frame is thin and fragile.

9. 7. With the frame out of the way you will see the mylar ribbon cable that is coming out from underneath the Keypad assembly. You will notice that the mylar ribbon cable folds back onto itself as it re-enters the Keypad assembly. This 'touching of the two ribbon cables' is where the trouble lies. The ribbon cables may be stuck together. Carefully separate these two and then insert a small piece of paper between them (paper can be 1/2 x 1/2 ) and work the paper all the way down into the Keypad assembly as far as it will go.

10. 8. Using electrical tape, apply a small piece between the ribbon cables to hold the paper in place. Next, use more electrical tape and put it between the mylar ribbon cables enough so as to keep the ribbon cables separated.

11. 9. Re-attached the thin metal frame making sure to press it into the Keypad assembly enough so that the (4) tabs click into place.

12. 10. Use electrical tape and apply it to the raw metal edge of the thin metal frame to prevent the mylar ribbon cables from rubbing on the metal edge.

13. 11. That's it. A final word of caution. Be careful when inserting the ribbon cable connector back on to the circuit board. The connector is loose and you need to gently place the ribbon cable into the circuit board connector.

14. 12. Reverse the order of assembly from above.

15. 13. Plug in the microwave and then it should reset and ask you to set the time.

Best of luck to you

Dec 29, 2014 | Maytag Appliances Over-the-Range Microwave...

1 Answer

Whirlpool m575 set


The problem is a bad connection between the ribbon cable from the key pad and the connector that it sits in on the printed circuit board. Take the cover off, write down the location of all the wires connecting to the circuit board and remove them. Remove the keypad and unlatch the lock on the ribbon connector. Remove the ribbon cable and gently clean each contact point so it is no longer dull in colour. Put it all back together.

Apr 27, 2014 | Microwave Ovens

1 Answer

Keypad replacement


Remove the front housing and diconnect the ribbon cable very slow.look to see how the key pad was installed and remove it and install the new one. it's not very hard just watch what you are doing and don't lose any small screws

Mar 19, 2014 | Samsung 30" 1.6 cu. ft. Over-the-Range...

2 Answers

Samsung microwave shows SE on display


The problem lies with the mylar ribbon cable that connects the Keypad to the circuit board. The Mylar ribbon cable folds back onto itself and are touching. Over time the mylar 'breaks down' electrically and the wire traces in the mylar will 'arc' onto the other mylar ribbon cable. The solution is to separate the two mylar ribbon cables using paper and electrical tape. I've done this on several microwaves (not just Samsung) and it has worked every time. Patience and about 20 minutes is all it should take to fix it. I've described below how I did it for the SMH9187ST Microwave Good luck to all.

1. UNPLUG THE MICROWAVE !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

2. 1. Remove the top front cover by removing the (2) screws that are along the top edge (phillips).

3. 2. Slide the cover to the left about a half inch (there are tabs holding the cover in place) and remove.

4. 3. Remove (1) screw from the top of the Keypad Housing (phillips). Lift the Keypad Housing upwards about half an inch (there are tabs holding the Keypad Housing in place) and remove. Be careful of the metal grille that is just above the Keypad Housing as this may fall out since it is being held in place by the Housing.

5. 4. Be careful not to pull on the wiring harnesses that are attached to the Housing. Carefully unplug the wiring harness that has the RED connector on it from the circuit board. Carefully unplug the small white connector that has the mylar ribbon cable on it (this cable is see-through and you can see thin, flat wires in it).

6. 5. Remove (4) screws that are holding the circuit board onto the Housing.

7. The Housing should now be free of the circuit board and wiring harnesses. It's safe to let the wiring harness/circuit board hang free, but caution should be used anyway.

8. 6. Remove the thin metal frame from the Housing. There are (4) plastic tabs holding the frame in place. Using a small screw driver pry one side of the frame away from the housing (try to do this to the side that has smaller plastic tabs). When this side of the frame is free of the Housing you have to lift the frame out at an angle to remove. It might put up a fuss, but be patient and be gentle with it since the frame is thin and fragile.

9. 7. With the frame out of the way you will see the mylar ribbon cable that is coming out from underneath the Keypad assembly. You will notice that the mylar ribbon cable folds back onto itself as it re-enters the Keypad assembly. This 'touching of the two ribbon cables' is where the trouble lies. The ribbon cables may be stuck together. Carefully separate these two and then insert a small piece of paper between them (paper can be 1/2 x 1/2 ) and work the paper all the way down into the Keypad assembly as far as it will go.

10. 8. Using electrical tape, apply a small piece between the ribbon cables to hold the paper in place. Next, use more electrical tape and put it between the mylar ribbon cables enough so as to keep the ribbon cables separated.

11. 9. Re-attached the thin metal frame making sure to press it into the Keypad assembly enough so that the (4) tabs click into place.

12. 10. Use electrical tape and apply it to the raw metal edge of the thin metal frame to prevent the mylar ribbon cables from rubbing on the metal edge.

13. 11. That's it. A final word of caution. Be careful when inserting the ribbon cable connector back on to the circuit board. The connector is loose and you need to gently place the ribbon cable into the circuit board connector.

14. 12. Reverse the order of assembly from above.

15. 13. Plug in the microwave and then it should reset and ask you to set the time.

16. Hope this works for you !!

Jun 13, 2012 | Samsung SMH9187ST Microwave Oven

1 Answer

I have GE microwave oven model JVM1740DM1WW-1000W. the key pad 1 to 6 on express is not working. all other key pad works. how to troubleshoot this problem?


you can try removing the outer cover and being careful,check all ribbon cables to the keypad by removing if they are plugged in and not soldered to the keypad circuit board and re plugging them back in,if this doesnt solve the problem you will need to replace the keypad board

Aug 07, 2011 | GE Spacemaker JVM1740 Microwave Oven

1 Answer

We have an lg microwave oven with the control pad on bottom of door...removed pad by lifting on sticky stuff but it is attached with a circuit board ribbon, How do I remove the ribbon


where the ribbon cable makes connection to the control board there is a plastic insert around it you need to grab one both sides just the plastic piece not the ribbon and it will pop up approx 1/8 inch to 1/4 inch and allow the ribbon cable to come out..there are two small holes that are in ribbon cable once you remove you will be able to see that align with 2 plastic tabs so when pressed down the ribbon cable connects with the control...good luck to you

Jan 06, 2011 | Microwave Ovens

1 Answer

My oven is saying F7 d6. The d6 is flashing. The oven is beeping. It is a GE model number jsp42s0k4ss


Sorry to read about your problem, I hope this helps you out.

Do you have the dreaded F7 message pulsating from your oven? The original purpose of the F7 message is to signal a stuck START key, which is a rare occurrence.

The more common cause is a type of short circuit that occurs in the touch panel near the cable slot. The fix that I will describe addresses this type of fault. It will not fix a stuck START key. It will not fix a faulty Electronic Range Control (ERC). If you are getting other errors, such as F1, the fix may still do the job. F0 is usually a shorted off key.
Cleaning the ribbon cable connector is a myth. What you accomplish is to temporarily disrupt the short circuit occurring near the slot in the touch panel. With time the short circuit grows back. It happens more often when the humidity is high. So here is my solution to the F7 problem.
The most important step is first turn off the power to the oven at your circuit breaker panel.
You will need to open the touch panel. There are typically three small screws on the bottom edge of the touch panel. It is advisable to have an assistant to hold up the panel while you work on it. Pull the panel outward at the bottom to gain access. There are many wires attached to the panel. Do not allow the panel to dangle by the wires.
When the panel is open, you will see a flat ribbon cable connecting the ERC to the touch panel. See photo # 1. The principle of the fix is to apply additional insulation in and around the ribbon cable at the slot where it exits the touch panel.
There are three basic styles of touch panels. Here is how the fix is applied for each style.
1. Plastic touch panel with a two-segment ribbon cable.
Apply a slip of paper or file card material between the two segments of ribbon cable in the area of the slot. Work the paper down as far as it will penetrate. Typically it will only go in about 1/8". See photo # 2.
2. Metal touch panel with a two-segment ribbon cable.
Apply the extra insulation as per style 1. In addition, apply extra insulation on both sides of the ribbon cable and the edges of the slot.
3. Metal touch panel with a one-segment ribbon cable. Apply the extra insulation on both sides of the ribbon cable and the edges of the slot.
If your style is different from the above three styles, the fix will not work for your situation.
Don't be concerned about using paper for the insulation. It will not get hot enough to burn. You will probably find a set of instructions printed on paper in the top of the oven when you open the touch panel.
If the fix doesn't work for your situation, you will need to replace either the touch panel or the ERC. Here is how to determine which one is faulty.

1. Turn the power off.
2. Remove the ribbon cable connector from the ERC.
3. Turn the power back on.
If the F7 does not appear after a few minutes, the problem is in the touch panel and it must be replaced.
If the F7 returns after a few minutes, the problem is with the ERC and it must be replaced or repaired.

I tried to help you. Please help me and Rate/Vote on my response. We take the time to answer your question. take the time to rate us.Thanks and good luck

Dec 25, 2010 | Microwave Ovens

1 Answer

Numbers 1-6 not working on Samsung Microwave


front key pad needs replacment. it fits like a sticker on the front panel. Before you can remove it, remove the outer cover and disconnect the ribbon cable.Once done, peel off old keypad from front and reverse proceedure with new one.Reconnect ribbon cable.

Sep 14, 2009 | Microwave Ovens

1 Answer

Key pad not working


Hi there,

First of all try this - - unplug Microwave and remove the back panel to gain access the the control panel. There is a ribbon connector that connects keypad to control. Remove the key pad from control and use a pencil eraser and clean the end of this ribbon connector wher it fits into control . Reconnect and see if that corrects the problem, If this will not works then You'll have to replace the control (key pad control).

Good Luck!!

Thanks

Aug 24, 2009 | Magic Chef Microwave Ovens

6 Answers

Microwave Keypad not working


This model does have a child lock. If it's on, the display will say "LOCKED". It is turned on and off by holding dfown the "0" key for 4-5 seconds. You may also have a bad keypad, which in many cases can be replaced. A bad keypad may be worn out due to age, damaged, or it may have gotten wet or otherwise contaminated. Moisture and contamination can be caused by spraying of cleaners, by storing the microwave in an unheated garage or shed, or infestation. I warn my customers to never spray cleaner directly onto the microwave keypad, since the liquid can get inside and "lock up" or even ruin the keypad or controller. Apply an alcohol-based cleaner (such as the purple kind) to a cloth (paper towels can scratch) and gently wipe it off. I suggest to my customers that they NEVER use any ammonia-based cleaner (like the blue stuff) on a microwave, since the ammonia will crack and distort polycarbonate plastics. Repost if you need more help.

Nov 04, 2006 | LG LMVM1935 Convection/Microwave Oven

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