Panasonic KX-TG25xx 2.4GHz Cordless Phones have a stability problem, which can be corrected by the common tinkerer. You'll notice the onset of problems when the dial tone starts to become unclear. As it gets worse you'll notice the range drop off. Eventually, you'll have thoughts of driving over it with your SUV and mailing the carnage to the Japan corporate office, asking for your hard earned money back. I've had three of these phones fail in the same way, and here's how I fixed it.
Stuff you'll need:
Put the phone on its base station to get properly synchronized with the base. This must be done when it is fully assembled as there are a few interlocks that prevent it from synching otherwise.
Remove the phone from the base station. Remove the battery cover (quarter works best). Do NOT disconnect the battery. The adjustment must be made with the phone and base station properly communicating.
Remove the rubber boot from around the top of the phone and antenna. It's easiest by starting in the front and then slipping a paper clip around the back side.
Remove the two screws in the battery compartment. Carefully peel the case apart WITHOUT disconnecting the battery. You may have to snip off one of the dog ears on the battery plug so that the back case can slip up the battery wires. If the battery plug comes out you will have to put the whole thing back together in order to synch it with the base station again.
Connect up the headphones (and put them on your head). Press the Talk On/Off button to (try to) get a dial tone. Using the straight blade screw driver, adjust top left adjustment until the dial tone is perfectly clear. You shouldn't have to turn it more than ~1/2 turn. If you are wise and/or cautious, you may want to put a original position mark on the case and on the adjustment pot before you start tweaking.
All done. Put it back together. Feel proud of yourself, or pissed at Panasonic, and get on with your day.
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© Chris Nelson, 2001. All rights reserved.