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The silver bar (on off bar, upper left of key board) that covers the blue lens bar has become detached from the blue lens; both are loose.

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Magic Chef MCD1311ST: Our microwave oven no longer beeps. Is there a way to fix the problem?

I assume you are certain it isn't your hearing going bad - sometimes the high-pitched tones of beepers become inaudible without properly functioning hearing aids, or the ability to hear certain tones disappears altogether. This is easily checked by asking someone with known good hearing if the beeper is working. Hearing problems can occur at any age, so don't dismiss this too quickly.

If everything else works normally, it is either the beeper (usually a piezoelectric disc on the controller board or attached to the board with wires, but sometimes a small speaker) or a fault in the controller board's beeper circuit. The first thing I'd do is check the disk and any wires for cracked or loose connections. (CAUTION: unplug the oven before removing the cover.) It's usually located on or near the controller board behind the key panel. Generally, piezoelectric discs are about 1/2" to 2" in diameter, have a brass rim with a silver plated ceramic center, and may be enclosed in a drum-shaped black plastic housing with a hole in the center to let the sound out.

If the disk is connected to the controller with wires and a removable connector, unplug the connector, clean the pins and test it. Piezoelectric audio devices use very little current, but a dirty or oxidized connection will still keep them from working. It is possible that the disk itself has mechanical (spring) contacts, and the silver electrode plating at the contact is tarnished. In that case, gently clean the silver with a soft white pencil eraser. Do not over-polish; the silver film is very thin.

Is is possible, but difficult, to repair a cracked solder connection on the disk. You must use an acid-free solder flux and silver-bearing solder (3% silver recommended), and you must work quickly using an iron at the correct temperature for the solder or you will completely detach the silver film from the disk.

If necessary, you can find replacement disks at electronic component vendors such as Mouser Electronics. The primary specification is the frequency (musical pitch), given in Hz or kHz (Hertz or kiloHertz). If you don't have that number, getting a disk of the same diameter will probably be close enough. You'll want one with wires or PC leads already attached. piezoelectric Audio Devices Mouser

Oct 22, 2014 | Microwave Ovens

1 Answer

How do i retrieve my gmail mail on my xp laptop

open browser. in address bar on upper left, click till it becomes blue. hit backspace to clear it. type in the address bar then press enter.
you will then have access to your gmail.

Nov 12, 2013 | Google Gmail

1 Answer

How to reseat crt socket board hitachi

First if one was loose that color (red,green or blue) would be affected.

To look---guessing a older projection set and a model number would help-----the older ones front speaker grill comes off and an inspection plate behind it----necks of the 3 tubes will be pointed down with a board on each-----just look (do not touch) to see none are down or loose.

More commonly on some models they develop a problem where the filament voltage for the tubes is down and the picture gradually gets darker------have the lens(again a older set) been cleaned or not?

Remove rear cover with set unplugged and inspect the 3 large lens--if dusty clean with lens cloth---they are the light source and if dirty picture on these sets will be darker and dull looking

best answer possible with no model number given.

Dec 02, 2012 | Televison & Video

1 Answer

Eye piece lens detached

Find best compact bird watching binoculars for sale, best compact spotting scope that let you get closer to nature. Welcome to

Aug 20, 2012 | Minolta Optics

1 Answer

After winding 2 new bobbins, the LED screen remains showing the bobin being wound, even when bobin is removed from spindle and spindle is mived back to the left.

The front panel circuit board has a microswitch which is activated mechanically when the bobbinwinder is moved to the winding position. The error is most likely with the microswitch stuck in one position. The remedy requires you to have moderate mechanical aptitude. The best thing to do would be to take it to your dealer for repair. If you want to try to do it yourself, here you go:
  • Open the top lid and, with a straight slotted screwdriver, remove the two large silver screws
  • Close the lid and raise the handle into the carry position
  • Loosen, but don't remove, the small phillips screw underneath where the right side of the handle rests
  • Pull the top of the right side cover over slightly
  • Remove the small phillips screw underneath where the left side of the handle rests
  • With the handle up in the carry position and the lid closed, lift the entire top cover from the left side first, exposing where the handle attaches underneath
  • Carefully bend the lower part of the handle to the right and detach it from its mount
  • Remove the top cover and handle
  • With the top cover removed, you can see the bobbinwinder arm make contact with the microswitch
  • If you are extremely careful to not touch the circuit board with your bare fingers or with a metal object, you can manually press the microswitch to see if it works
  • The plastic microswitch "button" may have become detached
  • The "spring" on the end of the bobbinwinder arm may have become bent
  • Don't remove the bobbinwinder assembly

Nov 09, 2010 | Janome Memory Craft 4900QC Mechanical...

1 Answer

Regrding Olympus Stylus 500.. When turned on the lens cover opens half way twice then closes with a green flashing light and beeping sound.

Have just solved similar problem with mine. Problem turned out to be that the lens cover was very slightly dented in. It didn't really look dented at all, but just wasn't quite symmetrical and was a bit more recessed on the side away from the shutter button. This was causing it to rub on the case when it tried to slide. (Mine had been not sliding completely shut for a while before it stopped opening properly too).

To fix it I undid two small cross head screws which let the front panel be prised off. On mine, with the front panel off, the lens and lens cover mechanism all worked perfectly, as the problem was that the lens cover was rubbing on the front panel. If yours is still broken with the front panel removed, then your problem is not the same as mine...

I used a small screwdriver to push out the metal bar on which the top of the lens cover slides, pushing on the right hand end of the bar to slide it left and out through the USB connector compartment door. That lets the top of the cover come off the bar and move freely. To take the cover off, it has to be detached from the arm which moves it. There is a pivot trapped in a slot in the arm, but once the cover is off the bar at the top, it can be moved down so that the pivot reaches the bigger hole at the bottom end of the slot in the arm. This lets the whole lens cover come off the camera.

I then used a screwdriver to gently push out the middle of the cover until its shape was more symmetrical. (I'm not sure a screwdriver was ideal for this, as there are now tiny lumps in the cover where I was pushing it).

Putting it back together was the reverse of taking it apart, although you can test whether it's fixed or not before doing up the screws holding the front panel on.

Apr 28, 2010 | Olympus ? Stylus 500 Digital Camera

1 Answer

Have a HP mono lazerjet 2420dn cannot reload 11X after jam

There is an 'arm' on the right side of the top cover that clips into a lever which retracts the drum drive as the cover is lifted and engages it as the cover is closed. This lever has become detached. you should be able to reach in the slot with a 'hook' of some sort to capture the lever and re-attach it. It's unlikely that its broken. When attached properly, you can see the assembly move in and out as the cover is opened and closed.

*please rate me :)

Mar 20, 2009 | HP Office Equipment & Supplies

1 Answer

Green translucient vertical bar on left side of screen

Cover green CRT lens with towel and see if red/blue video is normal......= bad CRT ?.............................T.

May 09, 2008 | Toshiba 57H82 57" Rear Projection...

2 Answers

S45 sliding cover fault

When you start to close the lens cover, a pin pushes against a spring to trigger the lens retraction sequence. You can easily take off the front cover to investigate this, and possibly adjust the angle of the spring to make it less sensitive. Just be careful not to yank out the ribbon that connects it all together.

Dec 19, 2006 | Canon PowerShot S45 Digital Camera

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