In this video I troubleshoot some signal routing issues on the tuner board, try to identify a possible design floor and make a modification to the tuner unit.
I attempt to repair the TC-112NV reed relay. I also try to cover the basics of how the RF switching circuits work. This is part three of a series of videos diagnosing and repairing this radio. This is a component level electronic fault finding and repair video. Please feel free to leave comment as we’d love to hear from you.

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If you have equipment you would like to donate to the channel to make more repairs videos or have equipment you need sorting out you can contact me at the following email: [email protected]


Part 1 Link
   • Yaesu FT-1000MP Mark V No RX-TX Troub...  

Part 2 Link
   • Yaesu FT-1000MP Mark V No RX-TX Troub...  

Parts Used and Equivalents

Replacement for 2SA1563 I used MMUN2114LT1G
Link to datasheet https://www.onsemi.com/pdf/datasheet/...

Reed switch I used to repair the TC-112NV relay MDSR-7-10-25 from Little Fuse. Note: This is not fully tested as yet so I can't guarantee reliability please wait for further videos.