Hi All,
Thanks for your patience with this. Please remember that I'm a CLUELESS BEGINNER, so it's no use thinking I'm capable of anything technical, LOL.
Willie N1JBJ : I am on firmware V1.02 and have tried power-cycling multiple times. to no avail.
Julian N4JO : I am in the UK but thanks for offering to look at it.
Robin G8DXQ : I have nothing other than a digital multimeter.
Alan G4FZQ : I will look at all the solder joints you mention, but the unit was working perfectly before the over-voltage and transistor blow-out. Yes, it was transmitting at time of over-voltage. And yes, I guess I got lucky replacing just the one transistor - but it's putting out a solid 5W with 9V input and 3V with 7V battery.
I have just made two short videos showing an Audio Filter Sweep and an RF Filter Sweep. I have no idea what these should look like, but hopefully, you guys do.
I've also done a quick video of the Input Analysis tes. All double-dutch to me, lol.
Take a look and let me know what you think.
? Test 1
? Test 2?
Below is a photo of the QDX and IC-705 sharing the same antenna. There is clearly something VERY wrong with the QDX but it does output a good 5W with 9V input.
Thanks again for your help guys - really appreciated!
73, Tom, M7MCQ
Tom M7MCQ