- Microwave oven - 11 Updates
- How do they put the flux in solder? - 1 Update
| Trevor Wilson <trevor@rageaudio.com.au>: Mar 25 04:38AM +1100 On 23/03/2019 6:37 am, Cursitor Doom wrote: > suggestions as to what to check for? I have the gear to measure up to > 50kV if necessary, and I'd guess the magnetron HT is considerably less > than that figure. So... where to start looking first? **First off: As Phil has stated, these things are VERY dangerous. NOTHING like working on the EHT of a TV set (which certainly can bite). 2kV+ of DC WILL kill. No doubt about it. Next: If it has a big ole' transformer (easy to tell, if you need two hands to carry it), it should be an easy fix. Diode or magnetron. Most likely the magnetron, though they usually fail slowly, due to emission loss. It could be something else though. Lastly: If it employs an SMPS, rather than a big lump of iron and copper, dump it and buy a new one. Not worth the effort. -- Trevor Wilson www.rageaudio.com.au --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus |
| Phil Allison <pallison49@gmail.com>: Mar 24 01:15PM -0700 Cursitor Doom wrote: > Phil would probably like to see me and several other posters here dead if > the truth be known. ** Just all the trolls - like you. > There is so much hatred in that man. ** Yep - I hate trolls. They ruin newsgroups for everyone. > Fortunately, > since I perma-plonked him some time ago ** What a gutless waste of space you are. > I could accept Phil's attitude problem if he gave 100% accurate advice, ** No such thing is possible or required of anyone here. You are completely insane. > I'd happily ignore all the bile as a personality quirk, but he's > frequently wrong ** FFS prove it - not once have you ever done that. You lying pile of shit. ..... Phil |
| Cursitor Doom <curd@notformail.com>: Mar 24 08:40PM On Mon, 25 Mar 2019 04:38:56 +1100, Trevor Wilson wrote: > **First off: As Phil has stated, these things are VERY dangerous. > NOTHING like working on the EHT of a TV set (which certainly can bite). > 2kV+ of DC WILL kill. No doubt about it. *CAN* kill. *Not* WILL. Depends on *several* factors so your "no doubt about it" is incorrect. There is one large fat potentially-lethal capacitor in there that needs to be discharged as the first job to do after the removal of the outer casing. It doesn't appear to have a bleed resistor for some reason (not with this particular oven anyway.) -- This message may be freely reproduced without limit or charge only via the Usenet protocol. Reproduction in whole or part through other protocols, whether for profit or not, is conditional upon a charge of GBP10.00 per reproduction. Publication in this manner via non-Usenet protocols constitutes acceptance of this condition. |
| tabbypurr@gmail.com: Mar 24 02:27PM -0700 On Sunday, 24 March 2019 14:26:10 UTC, Cursitor Doom wrote: > > I'm pretty sure how I approach it is safe, but enjoy your trip. > Phil would probably like to see me and several other posters here dead if > the truth be known. I don't doubt it. > I'd happily ignore all the bile as a personality quirk, but he's > frequently wrong and when that's pointed out to him he invariably attacks > whoever exposed it in the most visceral way. Yup > I struggle to see how > personal attacks are going to improve his credibility, but if that's what > he believes there's nothing you or I or anyone else can do about it. It would be sensible to say microwaves can electrocute people, not so sensible to insist everyone, despite not knowing what skills they do or don't have, does not have the necessary skills to work with them. It's not difficult, just need to know the issues/gotchas. There's EHT, soakage, leakage, and the principles of the interlock system. Otherwise it's just more electrical equipment, with its design quirks like the transformer. NT |
| Phil Allison <pallison49@gmail.com>: Mar 24 06:13PM -0700 > It would be sensible to say microwaves can electrocute people, ** Idiotic to say otherwise - you fool. not so sensible to insist everyone, despite not knowing what skills they do or don't have, does not have the necessary skills to work with them. ** Insane crap. You must KNOW the person has the knowledge, skill and necessary safety gear on hand. Plus they must not work alone. Impossible to ascertain that via usenet so the only safe option is to advise against and offer no help. > It's not difficult, just need to know the issues/gotchas. ** Totally insane crap. One needs to be trained on the proper precautions with microwaves ovens and USE them. You are one dangerous fucking idiot. ---------------------------------- ..... Phil |
| tabbypurr@gmail.com: Mar 25 05:06AM -0700 On Monday, 25 March 2019 01:13:16 UTC, Phil Allison wrote: > > It would be sensible to say microwaves can electrocute people, > ** Idiotic to say otherwise - you fool. so we get abuse for agreeing with you lol > not so sensible to insist everyone, despite not knowing what skills they do or don't have, does not have the necessary skills to work with them. > ** Insane crap. > You must KNOW the person has the knowledge, skill and necessary safety gear on hand. Plus they must not work alone. Neither I nor you need know what skill Mr Doom has. > Impossible to ascertain that via usenet so the only safe option is to advise against and offer no help. There are people taking that tack on any subject. Thankfully some are more constructive. > > It's not difficult, just need to know the issues/gotchas. > ** Totally insane crap. > One needs to be trained on the proper precautions with microwaves ovens and USE them. If you understand the gotchas & are sensible you're going to use them. We can't do more than that on usenet. > You are one dangerous fucking idiot. With respect you don't know what my working practices are with microwaves, which makes your statement a bit silly. NT |
| Cursitor Doom <curd@notformail.com>: Mar 25 03:24PM On Mon, 25 Mar 2019 05:06:04 -0700, tabbypurr wrote: > With respect you don't know what my working practices are with > microwaves, which makes your statement a bit silly. See, you politely disagree with him and all you get in response is a load of foul-mouthed abuse. As if that's really going to win people over! :-D -- This message may be freely reproduced without limit or charge only via the Usenet protocol. Reproduction in whole or part through other protocols, whether for profit or not, is conditional upon a charge of GBP10.00 per reproduction. Publication in this manner via non-Usenet protocols constitutes acceptance of this condition. |
| Cursitor Doom <curd@notformail.com>: Mar 25 03:29PM On Mon, 25 Mar 2019 05:06:04 -0700, tabbypurr wrote: >> advise against and offer no help. > There are people taking that tack on any subject. Thankfully some are > more constructive. Funny, that. Phil has offered advice to all-comers over the years with questions about how to fix mains-powered appliances which of course CAN also kill if you don't know what you're doing. So there you have it: more proof he doesn't even follow his *own* advice! :-D -- This message may be freely reproduced without limit or charge only via the Usenet protocol. Reproduction in whole or part through other protocols, whether for profit or not, is conditional upon a charge of GBP10.00 per reproduction. Publication in this manner via non-Usenet protocols constitutes acceptance of this condition. |
| John-Del <ohger1s@gmail.com>: Mar 25 09:15AM -0700 On Monday, March 25, 2019 at 11:29:52 AM UTC-4, Cursitor Doom wrote: > questions about how to fix mains-powered appliances which of course CAN > also kill if you don't know what you're doing. So there you have it: more > proof he doesn't even follow his *own* advice! :-D The difference is everyone knows that mains inputs will kill, but most people are unaware of just how dangerous a microwave is compared to any other plug in appliance around the home. "The U.S. Consumer Product Safety Commission reports that four people are electrocuted each year trying to repair their microwave ovens." https://www.richmond.com/news/man-dies-while-fixing-microwave/article_ee48c2ac-0128-5530-b7c3-4c7a1c3ff15a.html |
| Cursitor Doom <curd@notformail.com>: Mar 25 04:34PM On Fri, 22 Mar 2019 14:18:03 -0700, tabbypurr wrote: > Likely candidates are the HV diode & HV fuse. Of course it can be other > things. And of course they're in the killer section. Spot on. Blown 5kV fuse and HV diode open circuit both directions. Transformer secondary showing 188 ohms across the winding, so *hopefully* a quick fix. But I'd better just check the magnetron first....... :-/ -- This message may be freely reproduced without limit or charge only via the Usenet protocol. Reproduction in whole or part through other protocols, whether for profit or not, is conditional upon a charge of GBP10.00 per reproduction. Publication in this manner via non-Usenet protocols constitutes acceptance of this condition. |
| Fox's Mercantile <jdangus@att.net>: Mar 25 11:38AM -0500 On 3/25/19 11:15 AM, John-Del wrote: > The difference is everyone knows that mains inputs will kill, but most people are unaware of just how dangerous a microwave is compared to any other plug in appliance around the home. > "The U.S. Consumer Product Safety Commission reports that four people are electrocuted each year trying to repair their microwave ovens." > https://www.richmond.com/news/man-dies-while-fixing-microwave/article_ee48c2ac-0128-5530-b7c3-4c7a1c3ff15a.html Ya-but. How many people die from accidents with guns? Drunk driving. Trying to make "jack ass" videos for you tube? Considering the number of microwave ovens out there,that's a pretty low death rate. The best advice you can give about working on micro wave ovens is: The voltages, and the components that use/store them are lethal. In the words of Sgt. Phil from Hill Street Blues, "Let's be careful out there." -- "I am a river to my people." Jeff-1.0 WA6FWi http:foxsmercantile.com |
| Trevor Wilson <trevor@rageaudio.com.au>: Mar 25 04:43AM +1100 On 16/03/2019 6:20 am, John Robertson wrote: > I'm still trying to figure out how they put the filling in the Cadbury > Caramel bars... > John ;-#)# **Cadbury chocolate. :PUKE: Not the worst chocolate on the planet (that honour goes to Hershey, or some of the Asian makers), but not far behind. They generally make pretty decent TV ads though. Gotta give 'em that. Loved the gorilla one. -- Trevor Wilson www.rageaudio.com.au --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus |
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