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

brymac · 16th Sep 2021, 1:26 pm

I think I've cracked it!

Having pulled and tested all the large semiconductors, I pulled and tested the two L7915CV voltage regulators. One was outputting 14 volts when fed 14V DC (yes, I checked the data sheet first) the other half a volt...

See photos.

New ones arriving tomorrow, together with two new o/p transistors (which I may not need...)

I'll keep you posted...!!

Bryan

16th Sep 2021, 1:26 pm	#21
brymac Hexode Join Date: Nov 2004 Location: East Sussex, UK. Posts: 389	Re: Carlsboro Cobra 1100 repair. I think I've cracked it! Having pulled and tested all the large semiconductors, I pulled and tested the two L7915CV voltage regulators. One was outputting 14 volts when fed 14V DC (yes, I checked the data sheet first) the other half a volt... See photos. New ones arriving tomorrow, together with two new o/p transistors (which I may not need...) I'll keep you posted...!! Bryan Attached Thumbnails