There is no way I will have faith in an older RR oven that is 40yrs old+The tube is bound to go sooner or later.And---can you still get replacements-often when the magnetron goes-other items can go with it.I can remember the electromagnetic magnetrons-same idea as the old electromagnetic speakers.I used to have a service manual on microwaves-lent it out-never saw it again-was an exclllent book!from Tab Publications.They printed all types of service manuals on various devices.
Another Vacuum tube application soon to go solid state?
- Thread starter kb0nes
- Start date
warmsecondrinse
Well-known member
BRIEF Topic Hijack!
"Absolute pitch" - I'd love to experience that just to know what it's like. It's a brain thing, not an ear thing. I've seen people with almost no usable hearing rip their hearing aids out and/or run out of a room because someone is singing (VERY loudly, obviously) off-key, flat, etc. What's funny is that they can't fathom how people with normal hearing are able to stand it.
"Of course there's another aspect to this - since Reagan killed the middle-class rise up the ladder, [people] can't afford to pay more for better quality."
Thank you! Thank you! Thank you! It's a major pet peeve of mine to hear consumer behavior (or any behavior, really) framed as though preferences, desires, etc. are the only relevant factors.... as if the majority of consumers aren't forced to work within parameters they do not set and cannot change.
I now return you to your regularly scheduled forum discussion
Jim
"Absolute pitch" - I'd love to experience that just to know what it's like. It's a brain thing, not an ear thing. I've seen people with almost no usable hearing rip their hearing aids out and/or run out of a room because someone is singing (VERY loudly, obviously) off-key, flat, etc. What's funny is that they can't fathom how people with normal hearing are able to stand it.
"Of course there's another aspect to this - since Reagan killed the middle-class rise up the ladder, [people] can't afford to pay more for better quality."
Thank you! Thank you! Thank you! It's a major pet peeve of mine to hear consumer behavior (or any behavior, really) framed as though preferences, desires, etc. are the only relevant factors.... as if the majority of consumers aren't forced to work within parameters they do not set and cannot change.
I now return you to your regularly scheduled forum discussion
Jim
panthera
Well-known member
Two aspects of hearing don't fade with age/old magnetron
Transient response and perfect (absolute) pitch.
Jim, you're welcome to my perfect pitch. It's a curse, a congenital disease and a major source of nausea and headaches.
It's why I defend Andrea Bocelli when my non-dilettante music loving friends decry my 'taste' in singers. It's why I was forced to play the violin as a child/teen/student even though I'm horrid at at. Can you imagine the agony of playing in an orchestra filled by people who can't discriminate pitch closer than an octave who are playing fretless instruments?
The stupid discussions about how it's all cultural and tempered scales 'prove' blah, blah, blah.
Pass. Totally, completely, pass. If only I could. In my next life, no freckles, skin and hair colour besides pink and orange and normal hearing.
As to the lifespan of vacuum tubes - it's all over the place. Just like transistors - we now know that silicium atoms wander out of of place (a lot like Teflon creep or aluminium flow, though the process is, of course, totally different) and that's that for a lot of solid state devices which we once believed were going to last indefinitely.
I'd expect a 40 year old magnetron to be coming to the end of it's life, too - but I know a few real Amana RR that are still running perfectly well from that long ago, so - who knows? The transformer, capacitor, diode and tube are all still available so, worst case, it's all repairable.
For that matter, there's youtube clips on repairing the most typical Panasonic Inverter failures on all three generations, and all the repairs are pretty easy. It's mainly (shocking, I know) discreet components which go. So, maybe I'll think about one again. I sure do miss the 1350 Watts....
Transient response and perfect (absolute) pitch.
Jim, you're welcome to my perfect pitch. It's a curse, a congenital disease and a major source of nausea and headaches.
It's why I defend Andrea Bocelli when my non-dilettante music loving friends decry my 'taste' in singers. It's why I was forced to play the violin as a child/teen/student even though I'm horrid at at. Can you imagine the agony of playing in an orchestra filled by people who can't discriminate pitch closer than an octave who are playing fretless instruments?
The stupid discussions about how it's all cultural and tempered scales 'prove' blah, blah, blah.
Pass. Totally, completely, pass. If only I could. In my next life, no freckles, skin and hair colour besides pink and orange and normal hearing.
As to the lifespan of vacuum tubes - it's all over the place. Just like transistors - we now know that silicium atoms wander out of of place (a lot like Teflon creep or aluminium flow, though the process is, of course, totally different) and that's that for a lot of solid state devices which we once believed were going to last indefinitely.
I'd expect a 40 year old magnetron to be coming to the end of it's life, too - but I know a few real Amana RR that are still running perfectly well from that long ago, so - who knows? The transformer, capacitor, diode and tube are all still available so, worst case, it's all repairable.
For that matter, there's youtube clips on repairing the most typical Panasonic Inverter failures on all three generations, and all the repairs are pretty easy. It's mainly (shocking, I know) discreet components which go. So, maybe I'll think about one again. I sure do miss the 1350 Watts....
Tolivac, you might have missed it in my response, but yes, you can still get the '78 and up magnetron brand-new from just about any source- amazon, ebay shops, your local dealer through a WP #, there's millions of them. The only other parts in the power supply on these are a combo filament/power xformer, diode and cap. Diode and cap are also readily available and the xformer has overcurrent protection to fail safe. You've also got two thermal cutouts on these models, and those parts are available, too. Door springs and glass trays are the biggest weakness, and they're easy to replace.
Should anyone have an old RR they'd like to keep running for the next 50 years, do a google search and I'll pop up. At any given time I've got 50+ Radaranges here, some in the collection, some as parts machines and some under repair for others. I also do board-level work on panels for '76-'84 models. As long as I'm around, there'll be parts.
Should anyone have an old RR they'd like to keep running for the next 50 years, do a google search and I'll pop up. At any given time I've got 50+ Radaranges here, some in the collection, some as parts machines and some under repair for others. I also do board-level work on panels for '76-'84 models. As long as I'm around, there'll be parts.
Speaking of microwaves, talking about repairs jogged my memory. I'd guess it was mid 70's we bought a Litton microwave - huge thing just barely fir in the 18" between the counter top and the upper cupboards, had to be 26-28" wide. Had a basic touch panel, nothing special. Worked for years. then the panel died. I was adventurous so I bought the latest model control panel - it was the same dimensions, and replaced the old controller with the then high tech model with lots of extra options. The guts of the machine were the same, but we did gain some functionality. Lasted a number of years after that to be replaced in the late 80's with an OTR GE unit that survived another 15 years.
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