Sudenly it stop working look like no power almost year old Zaheer Siddiqi Ph.630 788 5330

6 years may be the point where the repair could cost more than a new unit----Call a local shop to see what it costs to look at the unit and if possible get a ballpark estimate---then weigh repair versus replacement.

At 17 years old, replacement would be appropriate.

If the microwave has been in storage or not used for a long time, parts may have corroded inside. Even though it worked for a while the parts may have worn faster. Other problems could be a dry joint, (but this often causes intermittent problems). Small bugs may have gotten inside and been fried across circuitry or moisture may have also caused a short.

check power. if good then check for fuses inside unit

Loud hum is usually due to faulty hv diod, resonance capacitor, or the magnatrone feed thru capacitor , chk it with a ohm meter , one by one n replace it .. zaheer Islamabad

Check the fuse inside the cabinet on the floor near where the power comes in.

The F-9 code indicates a problem with either the magnetron or inverter.

Due to the lethal voltages used and produced, I do not recommend that an inexperienced person work on these.

For Goldstar / LG / L.G. help, 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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There is no problem other than the ownere manual no explaining that level 2 is shown as P - 20, level 4 as P - 40. I don't know why, the sales rep at Wal-Mart doesn't know why, but that is how it works.

Sounds just like a bad door switch or door switch mount. Probably the upper one. Safety info, disassembly tips, and door switch test and replacement info are all available at our Web site. See http://tinyurl.com/yzjozk