On Wed, 9 Feb 2011 23:04:18 -0500, Michael & Sue Trussell wrote: >I did remove the DR7 board to gain access to the audio pot perhaps I may have >one of the connectors upside down??? Can you look at your DR7 board and if >you would let me know how your connectors are installed.
If that were the case, it wouldn't work at all. Sideband selection is accomplished by selection of the fixed passband adjustment pots on the power supply PCB in the front right corner of your radio. It sounds like you may still have a dirty/oxidized Molex PCB connector somewhere, or possibly the mode switch needs cleaning. If you worked anywhere near those fixed passband pots, you probably bumped one or more of them without even realizing it. They should be checked as a matter of routine every time the rig is serviced. Adjustment procedures can be found in the service manual and on the Drakelist web site. The +10v adjustment should be checked as well, and if it's very far off, set it to 10.000 and perform the AGC/S-Meter adjustments as well. The TR-7 service manual really does a very good job of explaining how the radio works. It would be well worth your time to study it. 73 -Jim -- Ham Radio NU0C Lincoln, Nebraska, U.S.S.A. TR7/RV7/R7A/L7, TR6/RV6, T4XC/R4C/L4B, NCL2000, SB104A, R390A, GT550A/RV550A, HyGain 3750, IBM PS/2 - all vintage, all the time! "Give a man a URL, and he will learn for an hour; teach him to Google, and he will learn for a lifetime." HyGain 3750 User's Group - http://groups.yahoo.com/group/HyGain_3750/ http://incolor.inetnebr.com/jshorney http://www.nebraskaghosts.org _______________________________________________ Drakelist mailing list [email protected] http://mailman.zerobeat.net/mailman/listinfo/drakelist
