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

Jolly 7 · 22nd Jan 2019, 2:26 pm

If you are getting hiss from the speaker and are able to change the volume, it means your AF stages should be fine. Does your radio beat against another one nearby ?
I have had to make modifications to the PCB and add a couple of components to make mine work properly. The first one I made went dead due to blown preamp/ output transistors as a result of excessive current in the AF stages. This is due to defective circuit design.
I will attempt to post some photos of my mods and current consumption readings later today.

22nd Jan 2019, 2:26 pm	#111
Jolly 7 Octode Join Date: Feb 2018 Location: Southampton, Hampshire, UK. Posts: 1,061	Re: More Chinese AM radio kits If you are getting hiss from the speaker and are able to change the volume, it means your AF stages should be fine. Does your radio beat against another one nearby ? I have had to make modifications to the PCB and add a couple of components to make mine work properly. The first one I made went dead due to blown preamp/ output transistors as a result of excessive current in the AF stages. This is due to defective circuit design. I will attempt to post some photos of my mods and current consumption readings later today.