I agree Les, a new hv transformer will be expensive, I took a quick search and it's somewhere around $180 for that microwave, the cost of the unit itself was $169 on sale.

Very often the high voltage transformer is not what fails in a microwave oven. I have removed quite a few of the high voltage transformers from discarded M.W.O. s. My intention is to develop a scheme for separating the core sections and replacing the high voltage portion with a lower voltage higher current winding. The simple goal being to produce, ultimately, a 12 or 14 volt DC power supply able to deliver perhaps 25 amps continually and 75 to 100 amps long enough, (10 to 20 seconds), to start an automotive size engine. Low voltage high current diodes are not a big problem now, nor horribly expensive. Today the big expense is the transformer. But a transformer that can provide 1200 watts in a MWO for 30+ minutes should, to my thinking, also be able to provide that power to a different load for 30 seconds.

 

My point being that in some areas a MWO usable for parts may be available for no charge. (FREE!)

 

My point being that in some areas a MWO usable for parts may be available for no charge. (FREE!)

Turns out you were correct Bill , just a week ago someone gave my bro a none working microwave oven for free ( bad control board) , he asked if i wanted it, being the tinkerer i am, i said yes even though i already bought another microwave to replace my broken one with the shorted HV transformer.
After he dropped it off noticed it was a different brand name than my old one ( Panasonic) , i removed the housing and it had a HV transformer that was identical to the one i needed for my old broken one. I removed the transformer from it , installed it in my old MWO , plugged it in and presto i now have a working microwave again , actually now i have two working microwave ovens !

Decided to keep one for a back-up and the donor one for spare parts, it also contained a wiring schematic stuck to the inside of the housing , ive attached a pic of that schematic and a pic of the repaired microwave " internals" for anyone interested or for future reference.
Thanks to everyone who responded , much appreciated.

 

I have a magnetron that looks a lot like the one in the photo, and the transformer was in a similar position. My guess is that there are a lot more brands than manufacturers for these products. Probably the TS is not near the 48067 zip code or I could provide another magnetron tube as a spare.

It would be interesting to see just where the failed transformer actually failed.