Kenwood TS-440S repair

Problem: Unit is stuck in CW mode, buttons don't work. Reset does not help. Radio diagnostics show a stuck bit for the tuner. Hmmmm.

Solution: The UPD8255AC I/O chip has a stuck bit on the output. Part isn't new but found a NOS replacement stateside for less than $5. Cut out the old part, desolder the old legs, replace. Problem solved.

More later, including pics.

This page last modified Fri Aug 17 12:06:04 CDT 2012 by timc!

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