I have a Sony CF-450 I inherited from my Dad. I didn't find the power cord. I understand that it is uncommon and not easily found. The connector for the cord is a 4-point terminal. I am pretty handy working with materials. I am confident I could create a plug to fit the terminal socket. What I need to know is which 2 of the 4 points I should plug into the 120V mains. Perhaps I'm being overly optimistic and the 4-point connection is intended to connect with a wall-wart power supply that plugs into the 120V mains. I'd love to use this device, but I don't want to be buying batteries to keep it in power. thanks, baumgrenze
https://www.ebay.co.uk/itm/VTG-Sony...447409?hash=item3d7961a4f1:g:TPQAAOSwXnBb49ER First clue was If you create an account on RadioMuseum (I haven't yet) you can download the schematic https://www.radiomuseum.org/r/sony_radio_kassetten_recorder.html Finally Mister-X here has one of these so maybe he can give more details and confirm that the Ebay lead is the correct one http://stereo2go.com/forums/threads/sony-cf-450.2209/
Nice! Just a great looking legacy box. Mine's still a shelf queen since I don't want to alligator clip the power, I'm just too clumsy and seem to hook things up wrong and I think there is a possibility with this unit. I know I found internet information on which pins to power but it's on another computer that I can't get to. These boxes tend to have a decent resale value and the cord was pretty common on 70's Sony Equipment, I'd just grab one off Ebay, although they can be kind of spendy. It might be cheaper to find an old Sony Radio or TV with the cord. https://www.ebay.com/itm/Vintage-Am...h=item4b534aa0d0:g:vqAAAOSwLSNbb7IT:rk:1:pf:0
Thank you, Longman, for a prompt and effective solution! I ordered and got the part for $16, less than the Radio Museum subscription cost. Perhaps another time I'll do that. I have several "Walkman" size cassette players from the 70's. Last time I check each one had an issue. FWIW, here is a quick, hand-held photo of the AC/DC port on the CF-450 with rough dimensions taken with a dial calipers. Note that the pins on the left are AC and on the right are 6VDC, but the polarity is not specified. Thanks again, baumgrenze
Now that I have a power cord, I've learned that the 'radio' toggle switch on the top may be faulty. When I push it into the "on" position the radio turns off, but it behaves like it is a spring loaded momentary switch and jumps back to "off" when I remove my hand. Has anyone else encountered this problem and solved it? Does anyone have a pdf service manual to share? Perhaps that might have a parts breakdown list? Thanks, baumgrenze
The on/off (RADIO) switch has an odd feel to it, like your loading it when you push it to "on" and it clicks stop there. It feels like a spring is pushing towards "off". There must be a catch in the on position and yours is bent or broken so it's not catching the lever.
I see that my question contains a 'major flaw.' I meant to say: "When I push it into the "on" position the radio turns ON, but it behaves like it is a spring loaded, momentary switch and it jumps back to "off" when I remove my hand from the handle." Mister X, do you mean intend to imply that the (RADIO) switches supplied with these devices have always behaved in an unusual way, but that they are intended to click and stay on? I don't recall seeing my Dad use the radio. Trips to visit him were rare. He lived on Lake Winnibigoshish in northern Minnesota and I live on the San Francisco Peninsula. When I did visit we talked with one another, we didn't listen to the radio. I don't doubt that at other times he used it quite regularly. Perhaps the switch is simply worn out. That is why I asked for access to a parts breakout diagram and/or a service manual. Thanks for replying, baumgrenze
Does the radio stay on when you flip the switch and it falls back to off or does it shut off. If it stays on perhaps it is working as intended. I have come across these momentary toggles in the past but from the photo it feels like the tab that locks the switch in position may have failed. Not sure how easy it is to find a switch but in a worse case scenario you might be able to fashion a small wooden wedge to fit onto the switch and keep it pushed into the on position.
Thanks, I'd written another 'not working as intended' reply when I decided to check one more time just how much return force the switch was presenting to my finger. I was pleased to 'discover' that when I released the pressure gradually the switch stopped in the vertical position and the radio was on. Thanks for persisting with me. I will explore later today how well it still performs. In my 'office space' the tuner seems 'fussy' and it is very hard to tune in an FM station. Along the way I get a lot of static. Perhaps the variable tuning capacitor (if that is the technology used in the CF-450) is dirty and it needs a blast of 'compressed air' to clear it out. thanks baumgrenze
