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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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Hi,
The baking element on the bottom of my 1986 GE oven developed a hole, and was not heating up any more. So I removed the old element. Then, just for kicks, I decided to test the current between the 2 wires that had attached to the old element, to make sure it wasn't just a blown fuse. I used a test light that was apparently designed for much lower voltage / wattage/ whatever, and destroyed it instantly with a loud pop and bright flash of ligth when I made the connection. Yes, poster child for electrical safety. The oven still works (except for the baking element). However, the red light under the temp dial is now constantly on, unless I turn off the breaker. I reconnected the old element, and the red light still stays on. It is on even when every control is set to "OFF". There is a faint "electrical odor" now when using the circular stovetop burners. Have I fried / melted some wiring perhaps in the oven ? Time to yank it out and check things ? When I install a new baking element, will the red light go off? I don't recall it being on until I messed with the "continuity test". ![]() Thanks, Poster Child for Electrical Safety |
#3
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![]() "User132384" wrote in message ... | Hi, | | The baking element on the bottom of my 1986 GE oven developed a hole, | and was not heating up any more. So I removed the old element. Then, just for | kicks, I decided to test the current between the 2 wires that had attached to | the old element, to make sure it wasn't just a blown fuse. I used a test light | that was apparently designed for much lower voltage / wattage/ whatever, and | destroyed it instantly with a loud pop and bright flash of ligth when I made | the connection. Yes, poster child for electrical safety. | | The oven still works (except for the baking element). However, the red | light under the temp dial is now constantly on, unless I turn off the breaker. | I reconnected the old element, and the red light still stays on. It is on even | when every control is set to "OFF". Replace the element. Do not use the old element. 98% of the time all problems will cease after you replace the element. N |
#4
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![]() "User132384" wrote in message ... Hi, The baking element on the bottom of my 1986 GE oven developed a hole, and was not heating up any more. So I removed the old element. Then, just for kicks, I decided to test the current between the 2 wires that had attached to the old element, to make sure it wasn't just a blown fuse. I used a test light that was apparently designed for much lower voltage / wattage/ whatever, and destroyed it instantly with a loud pop and bright flash of ligth when I made the connection. Yes, poster child for electrical safety. The oven still works (except for the baking element). However, the red light under the temp dial is now constantly on, unless I turn off the breaker. I reconnected the old element, and the red light still stays on. It is on even when every control is set to "OFF". Sounds like you tried using a 12v electrical tester to measure 240v from the oven. Once it struck an arc it's effectively a short circuit, sounds like you caused the thermostat contacts to weld closed. You may be able to fix them or you may have to replace the thermostat if a new one is available. If it's electronic then there will be a relay of some sort controlling the element. Often a schematic is taped inside the back. |
#5
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Thanks for the replies !
No, I don't know if I have power at the bake terminals. I am afraid to test it. I don't have a voltmeter with enough resistance. The broiler element still works. Don't know about the thermostat. By thermostat I assume you mean the temp dial. When I turn the other dial to "bake", the broiler element gets hot ( I think it did before too). Have not been able to buy new bake element yet. I am hoping that, as one poster implied, that replacing the bake element will solve the red light problem also. More questions : If I need to look at fuses, wires, switch contacts, etc., how do i get to them? Can I simply walk / jerk the oven out of its slot and onto the kitchen floor, with adequate slack in the wiring to let me get it out a few feet ? Is everything located inside the control panel at the back of the top of the stove ? It is not "electronic" in that there are no LED readouts, just dials, two analog clocks for start/stop timing, a regular analog clock which no longer works and a switch for the latch/self-cleaning function. I can rock the oven a bit, but it isn't moving easily, and I don't want to go ripping wires out by moving the oven out of its slot. Thanks |
#6
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![]() "Synapse" wrote in message oups.com... | Thanks for the replies ! | No, I don't know if I have power at the bake terminals. I am | afraid to test it. I don't have a voltmeter with enough resistance. You just need an AC voltmeter with at least a 250 VAC range. .... | More questions : If I need to look at fuses, wires, switch contacts, | etc., how do i get to them? Can I simply walk / jerk the oven out of | its slot and onto the kitchen floor, with adequate slack in the wiring | to let me get it out a few feet ? Is this a built in? If so, look carefully at the control panel. It may be partly removable to let you get at fuses etc. In any case, yes, there is enough slack wire to pull it free of the wall, but have something like a table to slide it onto. There MUST be some retaining screws or clips to hold it in place. Find them first. N |
#7
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![]() "Synapse" wrote in message oups.com... Thanks for the replies ! No, I don't know if I have power at the bake terminals. I am afraid to test it. I don't have a voltmeter with enough resistance. Huh? The resistance of the volt meter isn't an issue, any $15 multimeter should allow you to measure 240v, most go up to 1000v, however I think it'd be easier to just put a new element in there, if it doesn't heat then you know you don't have power there, if it does heat then the voltage is fine. When I turn the other dial to "bake", the broiler element gets hot ( I think it did before too). Have not been able to buy new bake element yet. I am hoping that, as one poster implied, that replacing the bake element will solve the red light problem also. I can virtually guarrantee you that it will not. The contacts of the thermostat are welded, or if it's solid state then the triac is shorted, it happened when you essentially short-circuited the element. More questions : If I need to look at fuses, wires, switch contacts, etc., how do i get to them? Can I simply walk / jerk the oven out of its slot and onto the kitchen floor, with adequate slack in the wiring to let me get it out a few feet ? Is everything located inside the control panel at the back of the top of the stove ? It is not "electronic" in that there are no LED readouts, just dials, two analog clocks for start/stop timing, a regular analog clock which no longer works and a switch for the latch/self-cleaning function. That depends entirely on your particular oven and the way it was installed. Usually there's some screws holding brackets around the face, sometimes you have to take some trim off to get to them. There has to be some slack in the wire because someone had to install it there at some point. Check if you can take the control panel apart without taking the oven out though, everything should be right there on the back of the panel, if it's all mechanical then the thermostat will be directly connected to the temperature knob by the shaft poking through the panel. It may be possible to pop the contacts apart with a small screwdriver or it may be fully enclosed and rivited shut, in which case you'll likely have to replace the thermostat. Oh, I should mention, make sure you shut off the circuit breaker before you tear into it. |
#8
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Thanks again for the replies. I have to go to a Christmas party today
and cannot have fun with the oven, unfortunately. But tomorrow, I will try out my new present, a multimeter. It has a 500V setting, which I will try. I will also read the directions first. All this takes time, which these darn parties use up so well ! The oven is placed at floor level, and is tightly inserted in between floor level cabinets/drawers. I see 2 screws on the top of the control panel, and can feel but not see 2 screws on the back of the control panel. I'm going to have to pull the oven out at least 6 inches just to get to the screws on the back. BTW, the flat metal "spade" pieces on the ends of the leads for the bake element are sort of burned/melted. I hope to be able to use them again. We'll see. Thanks again for the info, everyone ! I'll be back with more questions / results. ![]() |
#9
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"Synapse" writes:
Thanks again for the replies. I have to go to a Christmas party today and cannot have fun with the oven, unfortunately. But tomorrow, I will try out my new present, a multimeter. It has a 500V setting, which I will try. I will also read the directions first. All this takes time, which these darn parties use up so well ! The oven is placed at floor level, and is tightly inserted in between floor level cabinets/drawers. I see 2 screws on the top of the control panel, and can feel but not see 2 screws on the back of the control panel. I'm going to have to pull the oven out at least 6 inches just to get to the screws on the back. BTW, the flat metal "spade" pieces on the ends of the leads for the bake element are sort of burned/melted. I hope to be able to use them again. We'll see. Those connections must be very secure or else they will melt. Make sure they are tight going onto the new element. Squeeze them a bit with a pair of pliers if necessary. --- sam | Sci.Electronics.Repair FAQ Mirror: http://repairfaq.ece.drexel.edu/ Repair | Main Table of Contents: http://repairfaq.ece.drexel.edu/REPAIR/ +Lasers | Sam's Laser FAQ: http://repairfaq.ece.drexel.edu/sam/lasersam.htm | Mirror Sites: http://repairfaq.ece.drexel.edu/REPAIR/F_mirror.html Note: These links are hopefully temporary until we can sort out the excessive traffic on Repairfaq.org. Important: Anything sent to the email address in the message header above is ignored unless my full name is included in the subject line. Or, you can contact me via the Feedback Form in the FAQs. Thanks again for the info, everyone ! I'll be back with more questions / results. ![]() |
#10
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OK, I bought the new bake element. $26.95. Installed it.
Tested oven and stove. Thermostat is working properly. Set oven at 350. Put oven thermometer in oven and got a 350 reading. Broil setting works. All 4 coils on stovetop work. Just one problem : The red light under the temp dial stays on, even after the oven has cooled down. The red light does go off, but only in "bake" or "broil", when the dialed temp has been reached. The light clicks on and off as usual during cooking. But after shutting down the oven, and setting the dial to "OFF", the red light comes back on as soon as the oven temp cools down to below the thermostat setting. The temp stays low, the oven does not try to heat up again, but the red light comes on anyway, and stays on forever until I shut off the breaker, or cook something. I guess I can live wth this. Just have to get used to seeing that red light on all the time unless cooking. I removed the back panel and saw several wires that were "rippled" near their connections to their receptacles( the dials on the control panel) , but no obvious "melted wires". If the red light eventually burns out, will it affect anything else ? Thanks |
#11
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![]() "User132384" wrote in message ... | OK, I bought the new bake element. $26.95. Installed it. | | Tested oven and stove. Thermostat is working properly. Set oven at 350. Put | oven thermometer in oven and got a 350 reading. | | Broil setting works. All 4 coils on stovetop work. | | Just one problem : The red light under the temp dial stays on, even after the | oven has cooled down. | | The red light does go off, but only in "bake" or "broil", when the dialed temp | has been reached. The light clicks on and off as usual during cooking. | | But after shutting down the oven, and setting the dial to "OFF", the red | light comes back on as soon as the oven temp cools down to below the thermostat | setting. The temp stays low, the oven does not try to heat up again, but the | red light comes on anyway, and stays on forever until I shut off the breaker, | or cook something. | | I guess I can live wth this. Just have to get used to seeing that red light | on all the time unless cooking. Interesting. There should be a wiring diagram on the oven somewhere. That should give a clue as to what is keeping it on. It may be that you welded 'ON' an Aux contact on the control switch or thermostat. | I removed the back panel and saw several wires that were "rippled" near | their connections to their receptacles( the dials on the control panel) , but | no obvious "melted wires". | | If the red light eventually burns out, will it affect anything else ? Probably a neon. It'll take years to 'burn out'. N |
#12
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#13
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Hi!
The red light does go off, but only in "bake" or "broil", when the dialed temp has been reached. The light clicks on and off as usual during cooking. But after shutting down the oven, and setting the dial to "OFF", the red light comes back on as soon as the oven temp cools down to below the thermostat I have an old Hotpoint range (dual ovens, really big, old, but a wonderful stove to cook on and very easily serviced) where the control for the primary oven does this same thing from time to time. At first it worried me, but after finding that the oven remained totally cool and that rotating the selector knob through all the ranges would "clear" the light, I didn't worry much about it. http://greyghost.dyndns.org/stove.jpg (I haven't yet cleaned up tonight's dinner!) That has probably been five years ago. When switched from "bake" to "off" the primary oven controller still leaves that red "bake" light on from time to time. I'm not sure where the fault lies, and parts are still available for my stove, but I see no point in replacing something that isn't really broken. I would guess that your oven experienced a more rapid version of the "failure" that mine is experiencing when you shorted the element out. If the red light eventually burns out, will it affect anything else ? There should be no ill effect. My own oven's red light is still functional despite having spent many days in the "illuminated" state. I doubt you will miss it even if it does burn out and a replacement shouldn't be that hard to find. I would assume that many different GE and other brand stoves use that style of illuminator. William |
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