Microphone PG58 won't turn on, it has a blinking red light when I push the power button

"PG58" is just the capsule on top. That capsule has been offered on many Shure wireless. We would need to know the model number of the transmitter (it is inside the battery compartment).

Blinking of power LED are fault indications. Count the number of blinks occur at one time switch on. For this number, you can get an idea about the faulty section circuit inside it. It will make troubleshooting much narrower. If you wish to get more details about the blinking codes, check this link. Pull up older posts there.

Impossible to diagnose over email. Contact Shure for assistance in troubleshooting and/or getting the product repaired.

Make certain the mic and the receiver are in the same exact frequency band. There are stickers on both products that list the frequency band.

The handheld is in a different frequency band than the receiver. There are stickers on both that saw what frequency range they can tune to.

No, do NOT pry things off or damage the casing like these guys said, first, unscrew the the collar right under the mic head, the head will come off with the collar, then uscrew your battery access cartridge, remove the battery, look on the opposite side of where your on/off switch is there is a small black philips head screw, remove this screw, then push on the positive and negative contacts that your battery plugs in to and this will slide out of the hand held cartridge, and that is your circuit board, the on/off button is on that circuit board. get you some contact cleaner spray and spray a little on that button, let it dry for a few minutes and then plug your battery into the end of that circuit board and push that button in and out quiet a few times and it should start working properly for you, did for me.

ONCE TRY TO SWITCH ON AFTER CHANGING BATTERY IF IT NOT WORKS YOU HAVE TO CONTACT NOKIA CARE....

It could be many different things. An experienced technician would need to look over the entire transmitter to diagnose what is wrong. The following company might be able to repair it: www.deltaaudio.biz

Information on having your microphone repaired can be found on the Shure website at:

http://www.shure.com/americas/support/service-repair/index.htm