Sharp R-1872 Convection/Microwave Oven - Page 4 - Answered Questions & Fixed issues

Something must have spilled into the mechanism and dried there. You'll need to access and clean it out.

Download pdf manual https://elektrotanya.com/sharp_r-8460_r-8560_sm.pdf/download.html

You should check for 3 volts on sec coil supply for magnetron but do this check with the hv capacitor and hvr disconnected if 3volts is present , most probably your magnetron is deffective, replace it with the same type

Hi Timothy, your Microwave Sharp Half Pint, does not have any receptacle for batteries, therefore, if unplugged, it cannot generate any sound As Robert Oliver suggests, notice that another device nearby, that if it has batteries, may be making that sound I hope you find the origin of the beeper Greetings Franco Dosil Hola Timothy, tu Microondas Sharp Half Pint, no posee ning?n recept?culo para bater?as, por lo tanto, si esta desenchufado, no puede generar ning?n sonido Como te sugiere Robert Oliver, f?jate que otro aparato pr?ximo, que si tenga bater?as, pueda estar haciendo ese sonido Espero que encuentres el origen del emisor de pitidos Saludos Franco Dosil

Sounds like a door latch needs an adjustment that only a qualified technician can perform for safety reasons.

Try unplugging uni t for 10 seconds,then plug back in. If that doesn't work, contact a technician. For service.

Check your users manual for installation instructions. then reverse engineer them.

Needs a new screen. May be uneconomical to repair.

Contact Sharp

Consult users manual for programming instructions visit www.repairclinic.com for manuals on your particular model.

manufacturer or online search

It's probably a defective bottom door switch, or the amount for the bottom door switch is loose, misaligned, or broken.

You should be able to find a parts diagram and find the part you need here: http://goo.gl/zWz6Bz

Either the high voltage capacitor or the high voltage diode has failed. Its possible that the magnetron has open circuited but its unlikely. Get someone who knows microwaves to have a look. Be warned ! These high voltage parts can cause serious injury or kill you if you are not careful.

http://siica.sharpusa.com/portals/0/downloads/Manuals/R-1870_R-1871_R-1872_Microwave_Operation_Manual.pdf

IT MEANS THAT ITS TOO HOT AND PULL THE BUTTEN OFF

The buzzer is responsible for beep,it is mounted on PCB assembly,either remove the same or cut the supply sourse to it.

o sintoma e de maus contactos. e aconselhar levar a um t?cnico para resolver.

It shows that microwave is not working,check supply of HT transformer,Check HT diode diode by replacing still problem than replace megnatron.

The fuse is given inside the microwave next to the mains cord connected inside , it can be checked by series tester or by a multi meter ,it must provide the continuation.

You may be able to pick up a user manual at Manualsonline.com or some other online manual website.