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Best way to fix this is to take off the board that is over the power button and hot glue the button back in place. Only apply glue to the side of the button where it hinges - the other side needs to move freely or it won't contact the switch and operate correctly.
sadly this devices are no longer sold
you should try to find a damaged iHome and use for replacements or find a used one to replace your actual device
ihave an iHome too, and i had made some tricks to keep it working
If the tear is large, or the speaker cone is brittle because of age, you might be best off having the speaker completely reconed. There are companies that offer the service, or you can buy replacement cones and do it yourself.
For small tears (an inch or so long), you can glue a patch in place. I have used a piece of a paper coffee filter as a patch, and plain white Elmer's glue slightly thinned with water. Put the patch over the tear and use a small brush to spread a thin layer of glue over it. Give it a day to thoroughly dry and you should be set.
I have found this repair to be more effective on smaller speakers than on large woofers, though. The woofer cones are more mechanically active. But I patched a couple of 15-inch cones that had been punctured for a friend, and they are still playing after a year. So it can't hurt to try.
I belive it is a magnet which usually hold a CD on the spindle motor during playing. you need to take off top cover and find the spindle. The spindle has a round base for the disk, above the base should be another round piece with the magnet so during playing the disk is fixed between these two pieces. Check if there is missing round magnet in top piece. You can probably glue the magnet in place. Be careful, everything is fragile there, you can make more damages, probably better to bring it to a repair shop.
Depending on the manufacturer and age of the unit, I would usually start with the manufacturer. You should be able to locate a web page for them with a contact number or email address. If you send them the model of your receiver and description of the part or part number, I'm certain they will be able to assist you.
This kind of noise can be caused by a transformer that was poorly made.
Iron core transformers are normally 'potted' in a vacuum so that epoxy (or lacquer) is forced into the laminations to prevent them from trying to vibrate with the line frequency.
If you are adventurous, remove the housing, turn on the power and using an insulating probe such as a plastic rod (a plastic picnic knife will work), place the tip of it on any larger parts you see and place the other end behind your ear.
This will carry the sound in a more directional manner to your ear.
You should be able to locate the source of the buzz.
If you can, and it turns out to be a transformer, it will probably have a metal shield around it so it might not be possible to gain access to the laminations.
If the shield isn't ultra tight, you might be able to flow some 'Super Glue' into the cracks and with luck, 'glue' the laminations together.
Super Glue (or equivalent) is a good insulator so will not cause any electrical problems but take care not to get it on any plastics that are exposed with the housing on, it will cloud them forever.
You can purchase clear 2-part epoxy products at most home improvement stores. You will also need masking tape (or similar) a popsicle stick (or similar) a small piece of cardboard and a toothpick. Mix the epoxy with the popsicle stick and apply a small amount to the exposed surface of the volume control's stem. Holding the knob in place, run a strip of tape from the top of the unit, across the knob and to the bottom. These epoxies are very strong and fast setting. It's probably best to leave the tape for at least 8 hours but you should refer to the instructions for the epoxy you buy.
I'm probably a bit late in replying to help you, but my answer may help others. I had a DABR101 with an identical problem - just the display lit up bright blue, no text, no radio functions. As I am a qualified electronics engineer, I opened up the radio and found a flat ribbon cable joining the front panel to the main board via connector CN102 was partially disconnected. It's a very poor connector and the plug falls out easily, so probably the radio had been dropped or knocked. Anyway pushing the connector back together resolved the problem. Radio then working correctly. I secured the errant plug with a dab of hot glue. I hope this helps others with this issue, but you should not open up this or any other piece of electronic equipment unless you are qualified to do so as there are dangerous voltages inside.