Re: QCX mini no power output
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Thanks for the suggestion, but looks like I have other issues. I took the unit out of the case and powered it up. Noticed that Q1 and Q6 got hot pretty fast. With a 12v power supply, I am drawing about 150 ma without the display and control boards attached. I guess that is a little high. Don't see any solder bridges or anything else abnormal. Anyone have any ideas where to look?
Arlen WA6AUF
A stab in the dark-- Try reheating the connections to the low
pass filter to burn off any remaining enamel.
The intermittent operation suggests that something (maybe
temperature) is activating a flaky connection.
Good Luck!
73, Paul -- AI7JR
On 8/21/23 09:40, Arlen Levin wrote:
I recently completed assembly of a QCX mini 30m version. It worked
on first power up, although the power output was a little low.
I took it on a camping trip a week or 2 later and on first
attempt, there was no power output. I tried again a few hours
later and it was working again.
The next day, same issue, no power output and was not able to get
any power output since.
When keying, I hear the side tone and also receive seems to be
active. I don't remember if this was the case or receive gets
muted on transmit.
So, my question is, do I have a problem with transmit/receive
switching or power output and anything else to check before
removing from case?
I did try a factory reset.
Tnx,
Arlen Levin
WA6AUF
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