Shortwave is working ... sort of. Dial lamps get replaced. Sony CRF-320 restoration Pt.4 #pcbway#

Electronics Old and New by M Caldeira

description

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There is nothing more frustrating for a restorer than a device that works, but sometimes misbehaves for very short periods. The fact that the fault doesn't stay active for a longer period means that you don't have the time to test for the fault condition, before it jumps back to correct operation. I will have to give it some time to try and recognise the fault behaviour pattern, and hopefully manage to correct it once and for all. In the meantime, I have replaced the dial lamps, which were very dim. A common mod made to this model of radio involves replacing the AC dial lamps with LEDs, using a small PCB that rectifies the AC dial lamp signal, filters it, and then drives a green LED. I wanted to avoid adding the board, so opted for a simpler solution that I really liked. Stick around and see what you think. Hope you enjoy the video.

I will again reference the two videos on this radio that have been invaluable to me so far: Mr. Carlson's Lab: https://youtu.be/AlfJ1dxTuWI?si=4mmcjzi33TH-rHHb The Radio Shop: https://youtu.be/ub6bEbdyQ4A?si=sOTaTRSqdseTdYoh

Enjoy the video.

Other channels mentioned in this video: @MrCarlsonsLab @TheRadioShop

#RadioRestoration #SonyCRF #VintageElectronics

_HUNDREDS OF OTHER VIDEOS TO CHOOSE FROM DIY TEST GEAR: The title says it all: https://www.youtube.com/watch?v=7buNHf6HoDw&list=PLy5M_tA9ux7KkjmWX0I0zNocg6NF33EfL

RESTORATION BUILDING BLOCKS: A series of videos showing detailed steps used the restoration process of tube equipment: https://www.youtube.com/watch?v=7xvTGd4ysRE&list=PLy5M_tA9ux7JSYx8z2mw303vx287LHpzf

HowTo's: Various videos on some simple techniques and projects: https://www.youtube.com/watch?v=lgr-J_D6pSU&list=PLy5M_tA9ux7K3B77iUGyLPai3RIvJOrkO

See also playlists on some other completed restoration projects.

PHILIPS BX750A: https://www.youtube.com/watch?v=i8U9Lteja5o&list=PLy5M_tA9ux7IG6XgctidGO0u0DeT3_CxF

TELEFUNKEN OPUS 2114: https://www.youtube.com/watch?v=_HO2bjY5vuw&list=PLy5M_tA9ux7LhcZ9h9plfTFmjaM1mcifu

SABA UW-175-Z 3D: https://www.youtube.com/watch?v=cca4i60ZLw4&list=PLy5M_tA9ux7IWL18nsrSf4RnjsuPjHC-p

GRUNDIG 1070: https://www.youtube.com/watch?v=i4J5l0fwhko&list=PLy5M_tA9ux7JgnyYPRWOK763aJ8bg3iCI