On Fri, 30 May 2008 01:50:29 GMT, (Fiat Sparks) wrote:

Sam Goldwasser wrote:

Never seen an FR uwave. Why would they use that when the basic
circuit is adequate and reliable (more or less!)?

Mostly less! :-) My Panasonic inverter unit just released the magic
smoke. First the magenetron died, and then after I replaced that, an
IGBT in the switcher shorted and did a fair bit of collateral damage.

I finally did find a service manual...in spanish (which I read
poorly,) but it did at least tell me what all the small resistors and
diodes were supposed to be (before they melted.)

So, $100 in parts later, I now have a working microwave again. And, if
I get tired of it, I can sell it on Craigslist for at least $35! :-/


Don't try to operate that oven from a cheap generator with a less than perfect
sine output. That's another excuse for the blue smoke to leak out. BTDT.

In my case I wasn't about to spend that kind of money to repair an oven that
barely cost that much, especially since I used it in my restaurant always on
high. Therefore I yanked out all those fancy electronics and installed the
transformer/diode/cap assembly from another old oven. I drilled a hole
through that nice touch pad and installed an Intermatic spring-wound timer
from Home Depot.

Viola, good as new and bullet-proof against nasty power.

John

--
John De Armond
See my website for my current email address
http://www.neon-john.com
http://www.johndearmond.com -- best little blog on the net!
Tellico Plains, Occupied TN
The secret to creativity is knowing how to hide your sources -Albert Einstein