Is there any obvious visible damage to the magnetron itself e.g terminals blackened, cracked magnets, burnt antenna dome or any black heat marks on other parts close to it?
Blackened connections could mean loose or badly crimped connections causing heat. The other problems may be due to overheating caused by microwaves reflected back to the magnetron . You don’t state the model but has it got a stirrer blade and is it working OK?
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Check the resistance of the magnetron with an Ohmmeter. Normal test is ∞ (infinity) i.e. infinite resistance or open circuit (OL) if you like. Any other reading means that it is faulty
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Check the resistance of the magnetron with an Ohmmeter. Normal test is ∞ (infinity) i.e. infinite resistance or open circuit (OL) if you like. Any other reading means that it is faulty.
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If the magnetron tests OK then you may have to look for another reason why the fuse blows.
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Have you measured the resistance of the HV transformer?
Is there any obvious visible damage to the magnetron itself e.g terminals blackened, cracked magnets, burnt antenna dome or any black heat marks on other parts close to it?
Blackened connections could mean loose or badly crimped connections causing heat. The other problems may be due to overheating caused by microwaves reflected back to the magnetron . You don’t state the model but has it got a stirrer blade and is it working OK?
-
Check the resistance of the magnetron with an Ohmmeter. Normal test is ∞ (infinity) i.e. open circuit (OL). Any other reading means that it is faulty
+
Check the resistance of the magnetron with an Ohmmeter. Normal test is ∞ (infinity) i.e. infinite resistance or open circuit (OL) if you like. Any other reading means that it is faulty
Is there is obvious visible damage to the magnetron itself e.g terminals blackened, cracked magnets, burnt antenna dome or any black heat marks on other parts close to it?
+
Is there any obvious visible damage to the magnetron itself e.g terminals blackened, cracked magnets, burnt antenna dome or any black heat marks on other parts close to it?
Blackened connections could mean loose or badly crimped connections causing heat. The other problems may be due to overheating caused by microwaves reflected back to the magnetron . You don’t state the model but has it got a stirrer blade and is it working OK?
Check the resistance of the magnetron with an Ohmmeter. Normal test is ∞ (infinity) i.e. open circuit (OL). Any other reading means that it is faulty
Is there is obvious visible damage to the magnetron itself e.g terminals blackened, cracked magnets, burnt antenna dome or any black heat marks on other parts close to it?
-
Blackened connections could nean faulty connections. the other problems may be due to overheating caused by reflected microwavesto the magnetron . You don’t state the model but has it got a stirrer blade and is it working OK?
+
Blackened connections could mean loose or badly crimped connections causing heat. The other problems may be due to overheating caused by microwaves reflected back to the magnetron . You don’t state the model but has it got a stirrer blade and is it working OK?
-
Check the resistance of the magnetron with an Ohmmeter. Normal test is ∞ (infinity) i.e. open circuit. Any other reading means that it is faulty
+
Check the resistance of the magnetron with an Ohmmeter. Normal test is ∞ (infinity) i.e. open circuit (OL). Any other reading means that it is faulty
Hi,
Is there is obvious visible damage to the magnetron itself e.g terminals blackened, cracked magnets, burnt antenna dome or any black heat marks on other parts close to it?
Blackened connections could nean faulty connections. the other problems may be due to overheating caused by reflected microwavesto the magnetron . You don’t state the model but has it got a stirrer blade and is it working OK?
Check the resistance of the magnetron with an Ohmmeter. Normal test is ∞ (infinity) i.e. open circuit. Any other reading means that it is faulty