That 270 volts you refer to is the "270 VDC" from the power supply.
Check to see the covers are on tight and aligned correctly such that the
safety interlock is engaged as it should be. Make sure a wire is not
holding the cover off and thus not seating correctly.
73
Bob, K4TAX
On 4/30/2019 2:52 PM, Mike Streeter via Elecraft wrote:
----- Forwarded Message ----- From: Mike Streeter <[email protected]>To:
[email protected] <[email protected]>Sent: Tuesday, April 30,
2019 02:50:12 PM CDTSubject: KPA 500 HV Problem.
My KPA 500 has been running ok for several years on 120 Volts. Today I turned it off on
the back , unplugged it and opened the top because I thought I might need to change the
voltage tap. I did not need to change it. I replaced the top cover, plugged it in and
turned it on at the back. All ok, but when I turned it on with the front panel button the
HV reads .1 in standby. If I tap OPER it shows a hard fault and "270V error"
.The Manual says this is a 270V supply failure and to recycle the mains power KPA 500
after it is corrected. I tried recycling the power but still faults. I don't have any
270V power from the mains, if I did it would be 240ish, not 270. The fuse block on the
back is set to 115V.Any advice would be welcome.Mike, WM5DX.
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