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I being an experienced technician all I do is get micro buttons such as used in television set .I carefully apply minimal hot air from a hair dyer to the touch panel in a clean environment then strip the adhesive touch panel to check the wire ring that tress back to the pcb that is just beneath the touch panel. yo have to locate common and the wire responsible for touch, then drill a small hole where the micro button will sit solder to wires on the button then carefully solder them on the board.now make sure the button is on the same level with the surface before you return the adhesive touch panel make sure the button sits well then from beneath apply hot glue please don't use super glue if you don't understand I will send you pictures.
Time to throw it away. Microwave ovens can be dangerous if not working correctly. Micro-waves, (The actual waves themselves) can be lethal. Unless you really know what you are doing, do not under any circumstances dismantle the machine and switch it on. The cabinet of the machine is designed as a protective box and should stop random waves escaping and cooking anything else including you own insides. Generally Microwave ovens are uneconomical to repair, for the parts and labour you can buy a new one. Buy the most powerful you can. If you buy anything that is below 1000 Watts make sure it has a turn table. Remember that the more you place in a microwave oven, the longer it takes to cook. If you have a big family and you can afford it, you might like to think about a commercial oven 1600 - 1800 watts, that can cope well with large quantities well and will cook a tin of baked beans in less than a minute.
you mean it want power up or want work when you press the star buttom?
1. check the fuse if no power.
2. If it doesn't work when closing the door after setting timer it is the micro switch that the metal lach hits when the door close.
3. unpluge the micro wave unscew the scews to the cover of the microwave remove the cover. up front by the door you will see the micro switch maybe (brown,black,white,red/white ) what ever color it is disconet it take it to the hardware store buy a new one and replace it,themreasemble your micro wave.
Check your door interlock switch. Unplug the device, remove the cover DO NOT TOUCH THE SILVER CAN - POTENTIALLY LETHAL. Locate the small, probably black micro switch. Test it with a volt/ohm meter or other contunity tester. It should read "closed" when the door is closed and "open" when the door is open.
If you are like me, you turn the machine off by opening the door. When you do this, power sparks between the small contacts in the micro switch and eventually burns them up. When this happens, the machine thinks the door is open and will not turn on the magnatron - thus - no heat.
Find a replacement switch at a electronics or appliance parts place. You may have to provide make and model for an exact replacement. If you are handy, you can adapt any regular micro switch.
One of two thing happened here...
1. most likely...One of the interlock switches has malfunctioned. Micro. will NOT opperate unless ALL switches are working properly for safety
2. possible...the start button on the touch pad has failed in the circuit.
Unplug micro wave.
3 screws to remove top vent.
1-screw to remove touch panel from chassis.
tilts foward disconnect wires from board . I labeled for
1-screw holds the touch panel electrics to face plate.
There are 4-6 snap in plastic tabs holding it in place.
you have full access to the cheap plastic hinged buttons.
I hot glued mine once but they broke after 6 months.
I found this site:http://184.108.40.206/mwd/#brands
Good pics and you can see the buttons.
They sell a replacement button for $15 . There is also a
complete service manual for the Sharp 1505 for free download.
Did I mention to unplug the microwave before starting...