Re: [Elecraft] [K2] No signal at TP1 during Alignment and Test Part 2

Well it was T5! Sorry to take so long to get back but free time has been short lately. Lead 4 of the transformer was poorly stripped as expected. I also think I need to run a little more heat when I'm soldering from this point forward to make sure i get good connections made. Thank you to

Re: [Elecraft] [K2] No signal at TP1 during Alignment and Test Part 2

I agree with Don's comments on the soldering. I am not familiar with the kit, but if you had to wind the torroid yourself, were you sure to remove ALL the insulation from the wire ends before soldering them to the board? 73, Ron WA2EIO On 6/9/2017 10:41 AM, Don Wilhelm wrote:

Re: [Elecraft] [K2] No signal at TP1 during Alignment and Test Part 2

Robert, I just now had time to look at your photos. It seems to me that your solder on T5 (and maybe elsewhere) looks like "balls" with convex sides. That is indicitive of a solder connection that has not received enough heat. A good solder connection should have a slight fillet and end up

Re: [Elecraft] [K2] No signal at TP1 during Alignment and Test Part 2

It looks like classic PTTL (poorly tinned toroid leads) on T5. Vic 4X6GP > On 9 Jun 2017, at 5:20, Robert Forster wrote: > > Hi Don and Group, > > I got a bit of time to troubleshoot this evening. > > I do have a good signal at TP3 so I am ignoring the PLL and U4.

Re: [Elecraft] [K2] No signal at TP1 during Alignment and Test Part 2

Robert, Those voltages say the VFO is oscillating, but the DC voltage at the gate of Q18 indicates that either your DMM is dragging the voltage to a low level, or the oscillation is weak. If that is true, T5 is OK. I would suggest that you build up the RF Probe - parts are supplied with

Re: [Elecraft] [K2] No signal at TP1 during Alignment and Test Part 2

Hi Don and Group, I got a bit of time to troubleshoot this evening. I do have a good signal at TP3 so I am ignoring the PLL and U4. I did the DC measurements at Q18 and found some issues. the gate shows as a negative polarity but at -.001 volts Source is .08 Drain is at 6.8 This should lead

Re: [Elecraft] [K2] No signal at TP1 during Alignment and Test Part 2

Robert, Do you have a good signal at TP3? If so, ignore the PLL Reference oscillator and U4 for now. You need to get the VFO operating before doing anything else. Do the DC measurements a Q18. If you do not have a negative voltage at the gate, it is not oscillating. T5 is the most likely

[Elecraft] [K2] No signal at TP1 during Alignment and Test Part 2

Hello to the group! I'm afraid I need to lean on your collective K2 troubleshooting expertise. After a long break I have finally made it to the Alignment and Test Part 2 of my build. Everything was going OK until I got to the VCO Test. I have no signal at TP1. I have tested this with the built