Re: [drakelist] DRAKE TR-7 TROUBLESHOOTING HELP NEEDED

[Don and Diana Cunningham]

Paul, For the lost audio, look at the coax you plugged into the filter board (on the left side, looking from the front of the rig).  I've had that coax center lead short to the metal partition when I inserted it wrong and that definitely kills the audio.  73, Don, WB5HAK ----- Original Message ----- From: K3PZ - PAUL To: [EMAIL PROTECTED] Sent: Monday, March 15, 2004 9:04 PM Subject: [drakelist] DRAKE TR-7 TROUBLESHOOTING HELP NEEDED I had a perfectly functioning Drake TR-7.  I removed the NB-7 & Filter board to put in to another TR-7. I then installed a NB dummy card and filter board with stock filters back in to the original TR-7. When I powered it back on, it would not work properly. I think I may have been off 1 pin when I inserted the NB dummy card. The symptoms are: No audio at all, it is completely dead. On bands 160 - 20 meters the display cycles at approximately 17Mhz and will not lock. On bands 15 - 10 meters the display will cycle at approximately 33Mhz and will not lock. When I key the radio up in CW mode, the output seems fine 100 watts+ on all bands. I'm not sure exactly where to check voltages but on the bottom of the parent boad, the +10v seems OK. The +5v also seems OK.  There is also a +10T and a +10R which are both close to 0V. Not sure where to go next with this.  Any help would be greatly appreciated. Thanks in advance.   Paul K3PZ [EMAIL PROTECTED]