A few years ago, I did some research and found instructions on fixing KX-T123211D power supplies in the archives. (I actually used the instructions to fix a KX-TVP150 power supply, which is similar to the KX-T123211D.) This is what I found:
----------------------- From: "Richard Smith" I just had two KX-T123211D system power supplies die in the last week (we have around 30 to maintain). The symptoms are, dead system, no lights, no smoke, no blown fuse. I would suggest if it's smoked or the fuse blows, then send it to the Atlanta depot, otherwise read on. Both failures occurred after the system was unplugged from the ac power for a short time after running for years. The problem is caused by two capacitors in the oscillator section of the supply, C112 and C113 which should be replaced with low impedance 10uf 50v electrolytic capacitors such as Digi-Key's P10316-ND which sells for .19 each qty 10. If you find that C109 is a 1uf 50v electrolytic, replace that also with a .1 50v mylar which is a factory change. I have fixed about a half dozen units this way so far, which is a lot cheaper than sending them to the Atlanta depot which I used to do. I suspect that all of my 30 some systems will probably fail in this way eventually. The repair job will take you about an hour as there a lot of screws to remove and replace. Other than this weakness, these systems seem indestructible. > After a power failure of 3+hours, the KX-T123211D -3 doesn’t power > up. This > unit has worked flawlessly for about 12 years. > > > > I checked the fuse and it’s fine. > > > > But the unit has no lights on the exterior panel, and no leds are > lit on the > board below the power supply unit. There is power to the plug. > > > > Other than just ordering a new power supply, anything else I should > check? > > > > I saw another post where someone had a power supply problem after a > power > failure, but it sounded like they at least had some panel lights. > Has > anyone experienced a similar power supply problem? > > > > Thanks > > Ed > > > -- > No virus found in this outgoing message. > Checked by AVG Anti-Virus. > Version: 7.0.300 / Virus Database: 265.6.9 - Release Date: 1/6/2005 > > _________________________________________________________________ > KX-T Mailing list --- http://kxthelp.com/ > Subscription changes: http://kxthelp.com/mailman/listinfo/kxt > > _________________________________________________________________ KX-T Mailing list --- http://kxthelp.com/ Subscription changes: http://kxthelp.com/mailman/listinfo/kxt
