Welcome.
All function switch working, it's only display dark? Then please measure the VFD display heating voltage and DC -20V FIP drive voltage. Check the power supply fuse and 5V voltage on the front board.
Download the schematic: https://elektrotanya.com/kenwood_kr-v127r.pdf/download.html
Welcome.
All function switch working, it's only display dark? Then please measure the VFD display heating voltage and DC -20V FIP drive voltage. Check the power supply fuse and 5V voltage on the front board.
Download the schematic:
https://elektrotanya.com/kenwood_kr-v127r.pdf/download.html
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