View Single Post
  #1   Report Post  
Posted to sci.electronics.repair
William R. Walsh William R. Walsh is offline
external usenet poster
 
Posts: 288
Default Panasonic KX-TG2382 Cordless Phone Hookswitch Troubles

Hello all...

I have a Panasonic KX-TG2382 cordless phone system in good condition that is
having hookswitch issues. I noticed the problem at first when answering
calls--if the "talk" or "speaker" buttons were pressed on the handset to
answer the phone, the telephone system would behave as though I had pressed
flash or quickly hit the hookswitch (the dialtone would come on and pulse a
few times before going solid). If I shut the phone off after attempting to
answer the call, the line would start ringing again, and I could catch the
incoming call with another (wired) phone.

If there is not a call on the line, and I turn on the phone to place a call,
the phone may not come off hook for anywhere from several seconds to almost
instantly. There are two handsets and both behave the same way, lending some
support to a theory that the problem is in the base unit.

At first I suspected the handsets, but they're working fine. So I looked
inside the base unit and started tracing the circuit, as that's where the
actual "hookswitch" event would probably be handled. There's a transistor on
the board in the base unit that appears to do the job, marked "A1625" on its
casing. From what I can tell, it should be a "KSA1625" high voltage
switching transistor.

Am I right in thinking that little transistor might be failing after many
years of helping to answer calls?

William