UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

crackle · 29th Oct 2019, 8:25 am

Hi
I tried the green LED I originally bought first one way with the dots down and then the other with the dots up. When it was reversed only 2 segments worked. see image in post #3 (which I showed upside down) I seem to remember that when I tested it after your post #23 that I determined it was a common cathode.
It may be that another similar LED of the correct type, common anode, would have worked.
The LED was sold as suitable for Cybernet radios and I got a full refund, I had stated on the order it was for a Rotel RVC240 type. It is quite possible that it would work in the modern Cybernet radios.
I dont fancy rewiring the PCB at all to work with a common cathode display.

So it looks like the dot on those displays is superfluous then.

Mike

29th Oct 2019, 8:25 am	#30
crackle Rest in Peace Join Date: Mar 2011 Location: Basildon, Essex, UK. Posts: 4,100	Re: CB spares Hi I tried the green LED I originally bought first one way with the dots down and then the other with the dots up. When it was reversed only 2 segments worked. see image in post #3 (which I showed upside down) I seem to remember that when I tested it after your post #23 that I determined it was a common cathode. It may be that another similar LED of the correct type, common anode, would have worked. The LED was sold as suitable for Cybernet radios and I got a full refund, I had stated on the order it was for a Rotel RVC240 type. It is quite possible that it would work in the modern Cybernet radios. I dont fancy rewiring the PCB at all to work with a common cathode display. So it looks like the dot on those displays is superfluous then. Mike Last edited by crackle; 29th Oct 2019 at 8:31 am.