WL184 shure lavalier mic and T4N

I would prefer to hear it to be sure which one it is, but the four biggest causes of noise in a wireless system are: 1) Something hitting the mic (check to make sure the mic is free of clothing, other people, faces, etc.) 2) If the mic is a lavalier or in some way has a cable that plugs into the transmitter, something pulling on it could create a loud noise. Check to make sure it's in snug. 3) RF Interference with another mic or some other interference source. Try changing the frequency. 4) Something blocking the signal between the transmitter antenna and the receiver antenna. This is most likely to happen with a lavalier in someone's pocket or under clothing, and/or if the transmitter is far away from the receiver. The SLX series is okay for what it is, but part of why it's on the cheaper side is because of its limited distance. Unfortunately the only ways to alleviate this are to a) Reduce the distance, b) get a stronger wireless system, c) move the transmitter somewhere that the antenna is free, and d) invest in True Diversity antennae for the receiver.

Sounds like your wireless transmitters (mic) and receivers have drifted from their original factory set frequency. Also, older units may fall into the "illegal " 700Mhz frequency band and should not be used...

http://www.fcc.gov/encyclopedia/wireless-microphones

Mic plug has been replaced (new lav mic) so that leaves the mic jack connected to the body transmitter. Corrosion is a possibility...

Radio Shack tuner cleaner http://www.radioshack.com/product/index.jsp?productId=12784986

but I think it's something to do with the mic jack on the transmitter. Some units solder these connectors directly to the internal PC board and after a while, the solder connections break. Have a tech open it up and closely inspect the input jack's solder pads.

Most problems with radios that receive but do not transmit are antenna or antenna wire/connector issues. It's easy to receive with a marginal antenna but transmitting requires a good working antenna. If you have a SWR meter or can get your hands on one, install it in line with the antenna and test for reflected power. Of course, make sure your TX light comes on when you depress the mic switch. If not, switch mic and try again.
Hope this is helpful! Reply if u can.

There is a company in Chicago that can still repair old Shure wireless. Delta Audio 877-764-3634.

The Shure SLX2 hand-held microphone has similar performance characteristics to the much-loved (cabled) Shure SM58 vocal microphone. It has a 'cardoid pick-up pattern' intended for close work - being spoken / sung straight into the top of the capsule at no more than about 8 inches from the mouth of the user- to minimise feedback and extraneous noise. If you double the distance between the mouth and microphone the sound level will drop four-fold so distance really matters.
The SLX1 lapel/ lavalier is a semi 'omni-directiona'l pick up pattern microphone, which should work satisfactorily up to 12 inches from the speakers mouth, but closer is better. Always try to get your users to hang it about 6 inches below their chin, at most, and preferably with the top of the microphone capsule pointed upwards towards the mouth.
Here are a few other things for you to try:

1. There is a volume (gain) knob on the back panel of the SLX receiver unit. Try turning this up to maximum (needs a small screwdriver)
2. Make sure that both aerials on the receiver are fully extended at different angles to each other and in a clear 'line-of'sight' with the transmitter pack, with no large bits of metal in between which could block the signal. Ideally the receiver should not be more than 25metres from the transmitter. If distance is a problem locate the receiver near to the transmitter and run a balanced (xlr) cable to your mixer/ amplifier.
3. The angle that the receiver aerials are at should be broadly similar to the angle that the transmitter antenna is at to optimise signal reception.
4. Make sure the receiver is not located too close to other electrical equipment which may be interfering with the signal (especially voltage transformers, CD or DVD players and hearing loop induction amplifiers which have a strong magnetic field)
5. Always use good quality batteries - Duracell Ultra or equivalent ( do not use rechargeable batteries as they seldom achieve optimum voltage)
6. Check that the antenna is tightly screwed into the SLX1 transmitter pack and not damaged.
7. The SLX2 hand-held microphone has an adjustable level switch inside the body - unscrew the top of the microphone to access it - switch to maximum.
8. Another possible cause could be an impedance mis-match between the SLX receiver and your amplifier or mixer. There are two outputs on the rear panel of the receiver. One is an XLR (large 3 pin socket) this is LOW impedance and needs connecting to a low impedance input on your mixer/amplifier. You should normally be using this output even if your amplifier has a jack-socket input (use a proper balanced XLR to 6mm trs jack cable rather than a adapter plug). The other output on the receiver unit is a 6mm HIGH impedance, unbalanced, standard jack socket (labelled 'line in'). This would normally be to connect to a guitar amplifier which has a high impedance 'line level' input socket. If you are using this output you may need to use a pre-amplifier to get a big enough signal for a microphone.

You can find the Shure SLX user manual here http://www.shure.com/idc/groups/public/documents/webcontent/us_pro_slx_en_ug.pdf

There is some reception problem happening. Unfortunately, there are many, many things that can cause this. Try the following suggestions:

http://shure.custhelp.com/app/answers/detail/a_id/3834
http://shure.custhelp.com/app/answers/detail/a_id/2510

If you still can't resolve the problem, give Shure a call at 847-600-8440.

That would be nearly impossible to do. However, you should be able to get a schematic from Shure Service at [email protected]

On some mics, one of the lights will NOT turn on unless the battery is low. The mic is the transmitter, so I am not sure what you mean by it not lighting, but the transmitter is lighting?

Make sure the mic's freq. is within the scanned range of the receivers. Often the mics get mixed with other receivers and the resulting pair are incompatible.

The receiver should show if signal is being received. If it is, then the module in the microphone dynamic cartridge MIGHT have been damaged. If it is damaged, it has to be replaced.

make sure that you havent pulled one of the wires loose inside.. it is pretty easy to do.. I did it myself and didnt realize it until i had the same problem.. check where the mic. plugs into the radio first, if that is okay then it may be in your mic itself.. what kind of mic do you have it hooked up to