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Battery corroded inside microphone

I took out my microphone after quite a while of not using it... it had been left on with the battery inside, and the battery had corroded. Now it doesn't seem to be working. Is there a way to clean the contacts so that it can work again, or do I have a (very nice) ruined microphone?

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Re: battery corroded inside microphone

My experience with repairing Sony microphones for a television station is that once the battery corrosion eats the copper anywhere within the mic, the circuit (not the mic) is toast. I would send it in to Sony direct as they will have the parts and expertise to turn this around quickly for you.

Posted on Oct 30, 2006

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Can anyone please tell me how to use a shure sm58 radio antenna wireless microphone or manual as ive just purchased this of ebay and no instructions came with it so a little lost as no sound coming from...

Shure SM58 is not a wireless microphone, so clarify me the exact model for your wireless device in order to help you.

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Im doing some audio recording on my lexicon omega soundcard and i recently bought a microphone sennheiser e835s and i was wondering if this microphone can operate using phantom power?

Phantom Power (or an internal battery) is needed to operate 'Condenser' type microphones.
The E835S from Sennheiser is a 'dynamic' microphone and, as such, does not require any power source for it to operate.
If you are using several different types of microphone together (dynamic and condenser) it should be quite safe to have phantom power on - it won't cause any damage to the Sennheiser.
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I'm assuming that you have tried the obvious stuff like using a different cable and a different amplifier?
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No sound from my sm58 mic

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Assuming that you have tried using a different cable / amplifier to issolat ethe problem to teh microphone itself the most likely things are.
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  2. A broken capsule - this usually results from dropping the mic on hard surfaces. Replacement capsules can be bought quite cheaply.Just tak careful note of the wiring order before disconnecting the old one.

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Battery corroded now does not work

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Battery terminals corroded , back up batteries leaked and corroded contacts

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My relatively unused Shure PG 48 quit working.

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Sennheiser ew 100 g2 handheld microphone loose coil in capsule?

I had a similar problem with a sure sm 57 that I used on a guitar amp. I don't know if this is the correct fix but it worked for me. I took thin strips of paper to use as spacers and placed them evenly around the coil. I used a hot melt glue gun and placed 3 small drops around the edge of the coil. Remove the spacers and the coil should be secure.

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Batteries were left in the magic sing main microphone.

First, You should know that a leaking battery does not always mean any electronics the battery fluid has touched is ruined.  Quite often, depending on the severity of the leak, most battery fluid spills can be quickly and easily remedied with a few common household items, and maybe a trip to the electronics or hardware store.     Most alkaline batteries store their electrical charge in a chemical device, the battery cartridge.consumer electronics (AAA, AA, C, D, AND 9VOLT)  batteries are composed of alkaline electrolyte of potassium hydroxide and zinc powder and a chemical insulator between the two nodes.  Over time, alkaline batteries are prone to leaking potassium hydroxide, a caustic agent that can cause respiratory, eye and skin irritation.  When a battery leaks usually the cathode or + end with the raised button will leak the caustic potassium hydroxide fluid into the battery case of your microphone.  The battery fluid can cause a lack of conductivity on the battery terminals of your microphone and sometimes the circuitry also.     SOLUTION: First collect these items,   Rubber gloves.  The latex tight fitting type for protection from the caustic potassium hydroxide. Cotton swabs. You can use the small double ended cardboard type found in any drugstore or pharmacy.  A good electronics store will have long wood handled cleaning swabs (usually single-ended or one swab per wooden stick) if you need more reach inside to clean the compartment..  A small cup or can.  Warm water.  Baking soda. Paper towels or napkins. very fine sandpaper (400 grit or higher) or emery cloth.  dish soap. cotton swabs. an old toothbrush and clean , lint free rags. a blow dryer Open and disassemble the microphone as much as possible without disconnecting any soldered wires.  The idea here is to access ALL the surfaces of the mic so they can be cleaned of the caustic potassium hydroxide.  Make a nice solution of about one cup of warm water with one drop of dish soap add one tablespoon of baking soda. Stir well. With your gloves on, use the baking soda solution to clean the terminals and surrounding areas where the fluid has spilled. Use swabs, cotton and towels with the solution to clean the terminals, the surrounding areas and any circuit boards of the spilled fluid.  Do this as soon as you discover the problem, otherwise the powerful corrosive effects of the fluid will cause iron and zinc oxides (rust) to form and these will require a more aggressive approach, namely abrasives. If there are any rust like deposits left after cleaning with the baking soda wash use the blow dryer to completely dry everything.   Sanding should be kept to a minimum but is sometimes "a necessary evil".  The idea is to clean the nickel chrome battery terminals and NOT remove their nickel chrome from the spring-steel battery holder/terminals.  You want to clean the terminals, not remove so much material that the conductive plating is also removed or the battery doesn't fit because the gap filled by the battery is enlarged.  You just want to clean the chrome surface of the battery terminals of your device.  Make sure the unit is clean and completely dry before installing new batteries.  re-assemble your device if necessary, load new batteries and power up!    This is a common repair for any unit which has been stored with old batteries, or if exposed to prolonged heat  or humidity. Store all battery powered devices, especially transmitters, or remote controls in a cool, dry, place, removing battteries if stored over 6 weeks.    If this solution provides no repair, it would be reccommended to seek the Manufacturer's authorized repair center nearest you, or just replace the unit.

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Not getting any power in my 3-year-old Sennheiser MKE44P even with a fresh battery inserted.

Battery acid is very corrosive and if you have had a leakage then the acid could have gotten further up into the mic and corroded some of the components, most likely a small power lead from the contact. It is always worth taking the battery out after use, a £3 battery can ruin £300 worth of kit.

Oct 17, 2008 | Microphones

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