Here are my voltage readings taken from everything on page 23: U1 pin 1 - 1.35v U1 pin 7 - 1.97v U1 pin 13 - .00 U1 pin 14 - .6 U1 pin 15 - .4 U1 pin 20 - 1.2 U1 pin 27 - 2.0 U1 pin 28 - 2.0 U2 pin 10 - 13.4 U4 pin 1 - 13.4 U4 pin 11 - 1.4 U5 pin 1 - .05 U5 pin 7 - .05 U6 pin 6 - .01
Definitely some problems there. Sounds like U1 is bad??? -Chris KL9A On Tue, 2006-05-09 at 22:21 -0400, [EMAIL PROTECTED] wrote: > I have had the basic K2 up and going for a while, and have been using it > while I build the KPA100. Got the KPA100 built and all the inital tests > were fine on RX. I came down to the shack today (school club statio) to > align the TX (since I don't have a 50w dummy load at home) and I ran into a > problem. > > I was adjusting C1 and all was fine. OK, on to the next step. I had the > plastic handled screwdriver in my hand while reading the manual, and I > dropped it. Right into the opened KPA100. A couple sparks went flying. > It looks like it hit the ground jumper on the front of the board since > there is a black spot on it. Who knows what else it hit. > > Here's the problem. Ever since then, I get the NO PA PS message, even > without a PS connected to the K2. I can just plug in the PS to the KPA100, > and it turns on. I also get audio from my antenna connected to the KPA100. > There is no antenna connected to the K2. Then after the NO PA PS message > goes away, the audio goes to zero (no antenna) but the rig stays on. > Connecting the antenna to the K2 shows that it reverts back to the K2 > antenna port. *BUT* it doesn't do this ALL the time. The other times I > turn it on, it just thinks the KPA100 is gone entirely, and I don't get a > NO PA PS message. It just turns on and is silent. Again, this is with > EVERYTHING plugged into the KPA100. The speaker works all the time. > > Any ideas??? I am thinking (hoping?) it's just a chip that I can order > easily. Where should I start testing? > > Thanks, > Chris KL9A > > > -------------------------------------------------------------------- > mail2web - Check your email from the web at > http://mail2web.com/ . > > > _______________________________________________ > Elecraft mailing list > Post to: [email protected] > You must be a subscriber to post to the list. > Subscriber Info (Addr. Change, sub, unsub etc.): > http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/subscribers.htm > Elecraft web page: http://www.elecraft.com -- Chris Hurlbut <[EMAIL PROTECTED]> _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
