K2 Alignment and Test, Part III
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K2 Alignment and Test, Part III
 
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I have a K2 and have completed up to page 74. On page 75 the 40-Meter
Transmitter Alignment did not work. When in TUNE, my readings are .3 on the built-in wattmeter. Adjusting L1 and L2 does not make any change. "If you cannot get power output to 2.0 watts or higher, see Troubleshooting". There is no increase. There is a 50 ohm dummy load hooked to the antenna bnc. Could someone please let me know if there is MENUE or EDIT function that may not be enabled? Should I go directly to the Trouble shooting and take measurements? Thank you, Dale, kc9cwb _______________________________________________ Elecraft mailing list Post to: [hidden email] 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 |
RE: K2 Alignment and Test, Part III
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Dale,
Go directly to troubleshooting to locate the source of the failure - you may have to get into the Transmit Signal Tracing section of Troubleshooting (look following the tables). Once you locate the failing stage, it will be easy to locate the failing component (we can help at that point - right now all we can say is that 'It's broke' <G>). All in all, you will most likely find a bad solder connection or unsoldered connection, and the second most likely is that you will find an incorrectly placed component. So it may be a good idea to try a good visual inspection first, you may get lucky and not have to wade through the troubleshooting. When you do get into the troubleshooting, go to section 155 Power output low and follow the steps there - do not skip around (shotgunning), do things in order and your progress will be much faster. 73, Don W3FPR > -----Original Message----- > > I have a K2 and have completed up to page 74. On page 75 the 40-Meter > Transmitter Alignment did not work. When in TUNE, my readings are .3 on > the built-in wattmeter. Adjusting L1 and L2 does not make any change. > "If you cannot get power output to 2.0 watts or higher, see > Troubleshooting". There is no increase. There is a 50 ohm dummy load > hooked to the antenna bnc. Could someone please let me know if there > is MENUE or EDIT function that may not be enabled? Should I go directly > to the Trouble shooting and take measurements? > > No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.432 / Virus Database: 268.15.9/571 - Release Date: 12/5/2006 11:50 AM _______________________________________________ Elecraft mailing list Post to: [hidden email] 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 |
Re: K2 Alignment and Test, Part III
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In reply to this post by Scheidler, Dale A.
Don,
I did not see obvious solder connection problems and have started the part 155 on page 7 in Troubleshooting. R67/R68, R66/R69 and D9 were visually checked. As for checking component values in the RF detector, I went to page 17 and am working on the table "RF Board". Have completed down through Q18. My measurement is listed last. D1 A 0 0 D2 A 8.0 7.8 D3 A8.0 7.8 D4 A 8.0 7.8 D5 A 0 0 D6 A 8.0 7.8 D7 A 0 0 C 7.5 7.1 C7.5 7.1 C 7.5 7.15 C 7.5 7.16 C8.0 7.8 C7.5 7.2 C7.5 7.2 Q5 E 0.6, 0 Q6 B 1.0,0 Q7 B 0.6,0 Q8 B 0.6,0 Q10 S 1.6, 0 Q11 E 0.0,0 Q12 S 0.0,0 B 1.3,0 C13.3,13.4 C13.4,13.4 C 13.4,13.4 G 8.1,0 B 0.6,0 G6.0,0 C 12.4,13.4 E0.4,0 E0.0,0 E0.0,0 D1.6,4.7 C1.3,0 D0.0,0 Q13 E0.6,0 Q16 E0.6,0 Q17S0.00,0 Q18G-1.0,0 B1.3,0 B0.6,.6 G2.2,2.1 S2to3,1.9 C7.5,0 C2.2,2.1 D2to3,2 D6.3,7.9 Thank you, Dale, kc9cwb Dale, Go directly to troubleshooting to locate the source of the failure - you may have to get into the Transmit Signal Tracing section of Troubleshooting (look following the tables). Once you locate the failing stage, it will be easy to locate the failing component (we can help at that point - right now all we can say is that 'It's broke' <G>). All in all, you will most likely find a bad solder connection or unsoldered connection, and the second most likely is that you will find an incorrectly placed component. So it may be a good idea to try a good visual inspection first, you may get lucky and not have to wade through the troubleshooting. When you do get into the troubleshooting, go to section 155 Power output low and follow the steps there - do not skip around (shotgunning), do things in order and your progress will be much faster. 73, Don W3FPR _______________________________________________ Elecraft mailing list Post to: [hidden email] 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 |
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