Question about KitchenAid KHMS155LSS 1000 Watts Microwave Oven
Http://wiki.brandoncurtis.com/w/File:Microwave_Wiring_Diag this is a good diagram of a standard microwave. ive pretty much only seen on single mag ovens. "F" usually has a single wire from the hvtrans. "FA" is usually the gang off the cap.
Posted on Jun 13, 2017
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Posted on Jan 02, 2017
I’m sorry to tell you this but; I wouldn't recommend using a different transformer, even if it's the same size, it could cause serious damage. The HV transformer should only be replaced with the exact replacement part.
Posted on Mar 23, 2008
Even though the magnetron passed the continuity tests, it can still be bad. In fact, most of them fail in ways that do not show up in continuity tests.
And I am 99% certain yours is bad, especially since you have proven that the filament voltage and high voltage DC is being produced and sent to the magnetron.
I must say that the testing you have done is not recommended for people without plenty of experience, but apparently you did it safely. Please don't press your luck, since the high voltage can be instantly lethal.
For Goldstar / LG / L.G. parts, call 1-800-243-0000 (M-F, 7am-8pm CT, Sat 8-5 CT) and choose the appropriate prompt from the menu or visit here.
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Posted on Jul 18, 2008
hi i am suggesting that it is probably the magy as the res to grndis a bit low and therefore loading the sec supply down , just a thought
Posted on Oct 23, 2008
No solution yet but have ordered a replacement high voltage capacitor. If this works, I'll let you know.
Your expert did not respond to one of my questions which was whether he had experience with this type of problem with a microwave magnetron. When he did not reply after a substantial period, I assumed he had given up on the problem.
Posted on Dec 05, 2008
SOURCE: Wires to magnetron
The wire from the high voltage transformer high voltage tap goes only to one side of the high voltage capacitor. No other wire is connected to that terminal of the high voltage capacitor.
The other side of the high voltage capacitor connects to the anode (A) of the high voltage diode and to the "FA" terminal of the magnetron.
The cathode (K) of the high voltage diode is connected to chassis ground.
The pair of wires connected to the secondary (thinner) winding of the high voltage transformer are the filament wires and are connected to the "F" and "FA" terminals of the magnetron.
There should be a "mini-manual" (tech sheet) hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting, testing, and locating components.
It has the overall wiring diagram and schematic.
We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.
For further free help, e-mail me at http://www.microwavecontrol.com
Posted on Jul 13, 2009
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