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