Question about Whirlpool GH4155XP Microwave Oven

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1994 Whirlpool Microwave Mod MH7115XBQ-2

This is my mom's microwave, working fine for 13 years, today it has no power. There is power to the outlet, but nothing on the display. Can anyone tell me if there is a fuse to check, or perhaps secondary transformer voltage? I guess she's lucky for a microwave to run trouble-free for this long, hopefully longer if there is a possible easy fix (or something easy to check before we put the microwave on the curb). Thanks all, Matt

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Re: 1994 Whirlpool Microwave Mod MH7115XBQ-2

You can find exploded view diagrams and order parts here: The most likely causes are: diagram 5, ref. 5 fuse diagram 7, ref. 2 thermistor diagram 2, ref. 5 control board If it's a problem with the control board, we repair them nationwide for $32.50. We also have important safety and disassembly information we recommend:

Posted on Feb 04, 2007

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first check the power to the outlet.
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