The first thing to do is try a rest:? Hold down the MEM button while applying power.
It certainly that the mixer is shot, and possibly the IRF510.
Good luck.
Larry W1HUE/7
On the web at w1hue.org
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On 12/4/2019 2:45 AM, Vicenc Llario, EA3ADV wrote:
I have in my workbench a friend's QRP++ with S/N 15XX which needs attention. Las weekend I switched it on and had the S/N on the screen followed by an odd frequency reading. Trying to switch bands through the MEM button did not work properly. My best guess is the the battery is exhausted but I do not know if perhaps the EPROM is corrupted as well.
Although there is audio, no reception in any band with the rig connected to an antenna. I checked it on TX and unfortunatelly just a few mW read on my WM-2 wattmeter. I checked as well the iddle current of the IRF510 and with the power pot set to the minimum PWR the current was 980mA.
