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Re: Your opinion please. #qmx


 

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I'll have to find some freeze spray. Would love to use it to identify what the heat is affecting.

73,
Cliff, AE5ZA



On Sep 29, 2023, at 20:54, Paul - AI7JR <paul.hanchett@...> wrote:

If it'll fix it I'll do it. I like building things, but don't like undoing things if there's any way around it.

Copy that! I managed to melt my CPU while doing intial testing on my QMX (I think some clippings got where they didn't belong), so I ordered a second kit.

Built it this last week, except that my ADHD wouldn't tolerate going step by step through the instructions in the assembly manual. I think I got all the right parts in the right places (yet to be seen...), but I exchanged the male and female connectors for JP304/JP206 and JP303/JP205. And in the midst of it all, somehow I knocked C107 off the board (and I can't find it anywhere!)

I thought building a second time would be a snap, though winding the torroids would be tedious. I WAS WRONG!

Good luck with that transformer-- Could you spray it with cold when it's hot, to see if that's whats causing the power decrease?

Just a thought!

73, Paul -- AI7JR


On 9/29/23 18:39, Cliff wrote:
Paul,

Could be. It gets pretty hot, but I've read that is normal, but maybe not.

As a desperate move I've thought about winding the new type.

Let's see now, new finals, drive IC and output transformer. Hmmmm... If it'll fix it I'll do it. I like building things, but don't like undoing things if there's any way around it.

73,
Cliff, AE5ZA


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