Archive for the ‘TS-430’ Category

TS-430 Control Board: IC-5 Waveforms

**Note: All measurements below were using a x10 probe, but I forgot to set the scope to show that.  So rather than the 100mv/division that shows in the photos, I was actually using 1.0v/division. IC-5 is an 8-Channel Data Selector switch that is used to read the status of various switches or buttons from the […]

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TS-430 Mode Switch Diagnosis

One of my followers of this blog wrote to ask for help with diagnosing his Kenwood TS-430 transceiver. The problem was reported as being “stuck” in USB mode, unable to switch to other modes.  While running through the diagnosis via email, it became clear that many of the functions/switches were not operating. He had cleaned […]

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