Hello. For some reason my KLV1000 decided to play up after months of working fine.
At first I thought I heard a popping noise, but the power output and SWR remained unchanged, so I continued using it. Shortly it happened again, but still no change in power, so I thought nothing much of it. Shortly after again just before the 4amp fuse blew, I was keyed up for about a second, and everything was still fine.. SWR <1.1, and running at full power.
Now every time I replace the fuse, it blows instantly when I key up. All tubes are glowing as normal on standby. I read another post on this forum that suggested removing the driver tube, as that sometimes fails. I did that, and it's still blowing the fuse on key up. I checked the diodes and a couple of transistors surrounding the fuse and they seem fine.
What could it have been that was popping and eventually blew? I thought nothing much of it as the amp was still giving out full power while something was slowly blowing up, right up until the second the fuse blew.
At first I thought I heard a popping noise, but the power output and SWR remained unchanged, so I continued using it. Shortly it happened again, but still no change in power, so I thought nothing much of it. Shortly after again just before the 4amp fuse blew, I was keyed up for about a second, and everything was still fine.. SWR <1.1, and running at full power.
Now every time I replace the fuse, it blows instantly when I key up. All tubes are glowing as normal on standby. I read another post on this forum that suggested removing the driver tube, as that sometimes fails. I did that, and it's still blowing the fuse on key up. I checked the diodes and a couple of transistors surrounding the fuse and they seem fine.
What could it have been that was popping and eventually blew? I thought nothing much of it as the amp was still giving out full power while something was slowly blowing up, right up until the second the fuse blew.