- Bad Magnetron in microwave oven? - 3 Updates
| John Robertson <spam@flippers.com>: Dec 06 09:21AM -0800 On 2021/12/06 4:36 a.m., legg wrote: >> I had one that was misadjusted on a brand new microwave. It pretended to cook but no juice. > You wouldn't find an interlock switch in the 3KV rail. > RL No response from the OP to any suggestions... John :-#(# -- (Please post followups or tech inquiries to the USENET newsgroup) John's Jukes Ltd. MOVED to #7 - 3979 Marine Way, Burnaby, BC, Canada V5J 5E3 (604)872-5757 (Pinballs, Jukes, Video Games) www.flippers.com "Old pinballers never die, they just flip out." |
| Fax Machine <bdgfax01@gmail.com>: Dec 06 10:32AM -0800 On Monday, December 6, 2021 at 12:21:29 PM UTC-5, John Robertson wrote: > (604)872-5757 (Pinballs, Jukes, Video Games) > www.flippers.com > "Old pinballers never die, they just flip out." Oh dear, I didn't mean to make you think I wasn't responding. 1) I had already looked at http://repairfaq.cis.upenn.edu/sam/micfaq.htm and it didn't contain any more information about testing magnetrons than I had already completed. According to those tests (continuity between the filament pins and open circuit from filament pins to case), I have a good magnetron [but I still have no heat]. 2) This cannot be a door interlock problem because I do get 3KVDC at the magnetron. Had this been an interlock problem, there would be no high voltage. Also as legg wrote, there is no way that there would be a door switch interrupting the 3KV. I appreciate that you have parts available, but you're a million miles away (OK, a few thousand), and across the border from the US. By the time shipping was taken care of, "Cheap" would become "EXPENSIVE," and the cost really isn't the big thing here - I need to get this back on the wall (and working) sooner rather than later. I really do appreciate it, though - I have been lamenting the fact that there are no longer appliance "graveyards" anymore - just like car junk yards, there's no place of which I am aware to scrounge. I believe that at this point, I'll just shop (more locally) for a magnetron and see how it goes. I will report back here when I know more. Thanks folks. |
| "Peter W." <peterwieck33@gmail.com>: Dec 06 01:03PM -0800 That a magnetron tube tests "OK" with a VOM is not necessarily indicative of its fitness under actual load. A VOM on the OHMS setting puts out, on a good day, downhill, with a tailwind - perhaps 9 volts or so. Mostly far less. Actual in-use voltage may cause intermittent behavior such as you have observed, until the device finally just crapped out. Peter Wieck Melrose Park, PA |
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