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Yes, short or lack of a good ground. It could also be the cord attached to the mic. The mic itself should provide the needed feedback to the radio that a mic is plugged in. Do you have anything connected to the accessory jack in the back of the radio? That can cause the same issue.
1. Check microphone(s) batteries and replace if the charge is low. 2 Remove local sources of UHF interference, such as lighting equipment. 3. Adjust the squelch controls on the front of the UHF- 5800 receiver. 4. Signal may be too weak. If so, reposition antennas. If possible, move them closer to the transmitter. 5. Reposition the receiver, perform a "walkthrough", and observe the signal strengths. If audio dropouts persist, mark these "dead spots" in the operating area and avoid them during the performance. If none of these could help it is possible that the device has really some faulty operation and needed to carry it to service center. Good luck! gylacz
The slightly low voltage / current handling of the power supply won't help. You could probably get away with up to 15v without difficulty - many laptop universal power supplies are capable of generating the higher voltage so might be better than normal multi-voltage transformers that only go up to 12v - they will also be more stable in output.
The polarity of your power supply could be the wrong way round - check the symbols on the case near the power input socket - it matters with some brands and not with others.
Move the wireless receiver away from any other sources of interference - anything with a large electro-magnetic field (CD or DVD players, tv, hearing loop amplifiers, mains transformers) or any large lumps of metal that may attenuate the signal.
Only use balanced (xlr) cables to connect receiver to amplifier mixer and make sure they do not run parallel to any cables carrying mains electricity.
Turn the signal gain on the receiver up and the sensitivity on the amp /mixer down to improve the signal to noise ratio.
If the set allows try switching to a different frequency
Your 722 receiver may be in single mode. This is the case usually when you have the same picture on both TVs and the remote won't function. On the receiver when it's in single mode, you will have a green light for TV 1 and an amber light for mode under the single box.
To put in dual mode, open the door on the right side of the receiver (the door will open to the right). Once open, in the upper left corner of that area you have a mode button (to the right of the power button). Press the mode button and the amber light will now illuminate under the 2 boxes. The blue light for TV 2 should also illuminate indicating the receiver is now in dual mode. This will separate the 2 TVs and you can now watch different channels on both TVS, plus the remotes will now work. I hope this helps.
I would advise you to check your fuses in the block under the hood and on the driver's side of your dash. If that doesn't fix your problem, you probably need a new transfer case selector motor. A quality aftermarket replacement can be purchased for around $250, and is fairly easy to change. Hope this helps!
No one hears you because your microphone is probably set on mute. Go to your start menu, then go to control Panel, find Volume and Sound Control should be the icon that looks like a speaker. Double click that icon. From there Click Options and then properties, find the Microphone option and click the box to the left. This should add Microphone to your menu, then simply unmute your microphone.