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DMcMahon · 27th Feb 2020, 2:00 pm

Some of the microphone transformer wires that I had to disconnect connected to 2 of the jack sockets. This reminded me that way back in Post # 79 I had some confusion over the jack socket wiring and said at the time that would buzz them out using a jack plug.

So thought now would be good time to buzz them out, but when I went to fit a jack plug it would not fit (even with brute force) into any of the 5 jack sockets. I tried numerous 1/4" / 6.35mm jack plugs old and new, none of them would go in.

An old jack plug cable had come with the TK 819, I found that and it fitted in OK.

Measuring all my other 1/4" / 6.35mm jack plugs, their sleeve diameter are all very close to a nominal 1/4" i.e. 0.25"

The TK 819 jack plug measures 0.235" / 6mm

I remember now reading several weeks ago (cannot currently find it) in an older posting (I think for one of the Grundig TK 8XX threads) of someone encountering the same issue and fixing it by drilling though the jack sockets with a 1/4" drill ! saying something to the effect that with some 1/4" jack plug manufacturers, the sleeve diameter was smaller than the standard 1/4".

Seems a bit drastic to have to drill though the jack sockets so I will hang fire on that, maybe I can find a source for the < 1/4" jack plugs.

27th Feb 2020, 2:00 pm	#200
DMcMahon Dekatron Join Date: Apr 2019 Location: Worthing, West Sussex, UK. Posts: 6,600	Re: Grundig TK 819 Any Useful Info Some of the microphone transformer wires that I had to disconnect connected to 2 of the jack sockets. This reminded me that way back in Post # 79 I had some confusion over the jack socket wiring and said at the time that would buzz them out using a jack plug. So thought now would be good time to buzz them out, but when I went to fit a jack plug it would not fit (even with brute force) into any of the 5 jack sockets. I tried numerous 1/4" / 6.35mm jack plugs old and new, none of them would go in. An old jack plug cable had come with the TK 819, I found that and it fitted in OK. Measuring all my other 1/4" / 6.35mm jack plugs, their sleeve diameter are all very close to a nominal 1/4" i.e. 0.25" The TK 819 jack plug measures 0.235" / 6mm I remember now reading several weeks ago (cannot currently find it) in an older posting (I think for one of the Grundig TK 8XX threads) of someone encountering the same issue and fixing it by drilling though the jack sockets with a 1/4" drill ! saying something to the effect that with some 1/4" jack plug manufacturers, the sleeve diameter was smaller than the standard 1/4". Seems a bit drastic to have to drill though the jack sockets so I will hang fire on that, maybe I can find a source for the < 1/4" jack plugs.