Pocket radio repairs - Page 3 - UK Vintage Radio Repair and Restoration Discussion Forum

Herald1360 · 28th Feb 2021, 11:08 am

If you have a DMM with a diode check facility, you can sort the Ge from the Si and spot (should you be lucky) the odd Schottky. Ge will read around 0.2V, Simon around 0.6V and Schottky somewhere in between around 0.4V. Simples

OA47 if you can find one is good (low Vf) but any old Ge will do, as will the B-E junction of a gash small signal Ge transistor. (Link C to B). Make sure it's the right way round in the set but you can use either PNP or NPN.

If you want a couple of gash Ge diodes for £1 Inc postage, PM.....

lightning · 1st Mar 2021, 11:08 pm

Thank you!

But l think l am going to pass this set on to someone on here who has looked at my Sony, as l can't even locate the said diode.

l did have some success tonight, l managed to repair another of my tiny sets, which picked up no stations at all.
Replacing the capacitors cured this little set.

28th Feb 2021, 11:08 am	#41
Herald1360 Dekatron Join Date: Feb 2007 Location: Leominster, Herefordshire, UK. Posts: 16,536	Re: Pocket radio repairs If you have a DMM with a diode check facility, you can sort the Ge from the Si and spot (should you be lucky) the odd Schottky. Ge will read around 0.2V, Simon around 0.6V and Schottky somewhere in between around 0.4V. Simples OA47 if you can find one is good (low Vf) but any old Ge will do, as will the B-E junction of a gash small signal Ge transistor. (Link C to B). Make sure it's the right way round in the set but you can use either PNP or NPN. If you want a couple of gash Ge diodes for £1 Inc postage, PM..... __________________ ....__________ ....\|____\|\|__\|__\_____ .=.\| _---\__\|__\|_---_\|. .........O..Chris....O

1st Mar 2021, 11:08 pm	#42
lightning Heptode Join Date: Nov 2008 Location: Stockport, Cheshire, UK. Posts: 713	Re: Pocket radio repairs Thank you! But l think l am going to pass this set on to someone on here who has looked at my Sony, as l can't even locate the said diode. l did have some success tonight, l managed to repair another of my tiny sets, which picked up no stations at all. Replacing the capacitors cured this little set. Attached Thumbnails