Jeff CT-17 11 Posted September 18, 2023 Share Posted September 18, 2023 Hello, I purchased my CT-17 with AV-64 new in the 80s. After sitting in its box for a few decades, a lot of moving for a while, I pulled it out and the tuner display would not light nor would any of the buttons work. There is intermittent function when holding remote buttons down. Based on other sites I replaced all power supply caps and checked for bad solder joints. These had no effect. I found that if I unground the circuit board with the tuner, the tuner functions works. Not sure what this means. Wondering if anyone has run across this before? Electronics are not my strong suite. Thank you. 3 1 Link to comment Share on other sites More sharing options...
wrf 3,829 Posted September 18, 2023 Share Posted September 18, 2023 Jeff, Welcome to the site. Sorry to hear your CT-17 is having trouble. Your symptoms are fairly typical. The CT-17 is known to have some poor solder joints on the display board. The display board is actually two boards sandwiched together. Several studs are used to hold them together and to pass signals from one board to the next. For some reason these studs were soldered in place separate from the components. Often the joints will oxidize and provide poor/intermittent connections. Add this to all the 30 year old small caps that may or may not be bad and you've got a major puzzle on your hands. There is a terrifying level of disassembly necessary just to get to the display board. Beware. Some folks have had success focusing just on the display board solder joints and replacing the caps on the display board. Others, not so much. There are a lot of caps in the CT-17. In any case, it's not for the the novice. You may want to consider sending it to a pro. Search around in the preamp sections of the site here. You will find several posts about the CT-17. 2 Link to comment Share on other sites More sharing options...
Community Admin AndrewJohn 8,184 Posted September 18, 2023 Community Admin Share Posted September 18, 2023 Welcome to the site, @Jeff CT-17. Glad you found us. If you pursue a fix, please post some pictures of what you are seeing to help others understand the issue. 1 Link to comment Share on other sites More sharing options...
Zenith4me 1,386 Posted September 18, 2023 Share Posted September 18, 2023 Welcome to The Carver Site. Someone here should be able to help you troubleshoot your issue. 1 Link to comment Share on other sites More sharing options...
Ar9Jim 6,061 Posted September 18, 2023 Share Posted September 18, 2023 Hi Jeff. Welcome to TCS.. Enjoy! 1 Link to comment Share on other sites More sharing options...
3M_Audio 882 Posted September 18, 2023 Share Posted September 18, 2023 Welcome Jeff 1 Link to comment Share on other sites More sharing options...
Jeff CT-17 11 Posted September 19, 2023 Author Share Posted September 19, 2023 Thank you for the information. I will get some photos uploaded this weekend. 3 Link to comment Share on other sites More sharing options...
halfbaked 167 Posted September 20, 2023 Share Posted September 20, 2023 Welcome indeed to thecarversite and help spread the gospel.😁 Link to comment Share on other sites More sharing options...
Jeff CT-17 11 Posted October 11, 2023 Author Share Posted October 11, 2023 Sorry about not getting photos uploaded. I found the issue was on the display board as suggested above. Not sure which specific solder joint was cold. I simply reflowed all joints on the front display/switch board and am back up and running. I appreciate the suggestions. 3 1 1 Link to comment Share on other sites More sharing options...
Community Admin AndrewJohn 8,184 Posted October 11, 2023 Community Admin Share Posted October 11, 2023 13 minutes ago, Jeff CT-17 said: Sorry about not getting photos uploaded. I found the issue was on the display board as suggested above. Not sure which specific solder joint was cold. I simply reflowed all joints on the front display/switch board and am back up and running. I appreciate the suggestions. Love an easy fix! Great news. Stick around and enjoy! 😉 Link to comment Share on other sites More sharing options...
Cring08 149 Posted October 11, 2023 Share Posted October 11, 2023 Welcome! The crew on here will definitely steer you in the right direction! Link to comment Share on other sites More sharing options...
wrf 3,829 Posted October 11, 2023 Share Posted October 11, 2023 3 hours ago, Jeff CT-17 said: Sorry about not getting photos uploaded. I found the issue was on the display board as suggested above. Not sure which specific solder joint was cold. I simply reflowed all joints on the front display/switch board and am back up and running. I appreciate the suggestions. Wow. Congratulations. Not many around here can lay claim to a successful CT-17 repair. Link to comment Share on other sites More sharing options...
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