Philips TX500U Fixing - Page 2 - UK Vintage Radio Repair and Restoration Discussion Forum

Maarten · 31st Aug 2014, 8:14 pm

N.B. Verstemmen door 1500 pF + 470 ohm tussen top kring en chassis te verbinden.

N.B. Detune by connecting 1500pF + 470 ohm from the top of the circuit to the chassis.

Roland Huisman · 10th Sep 2014, 3:48 pm

Nice find that 21KX100A ! That is the third K4 I know of which has left the Netherlands for about a year! They are quite rare as it was only a set for tests. There are serial numbers know which indicate that there were at least 400 sets made.

I have one myself too. You can find it on: http://technischmuseum.nl
(Sorry the text is Dutch only at the moment. English will come later)

Regards and enjoy your TX500 too!

PE9ZZ_JO22KI · 11th Sep 2014, 7:12 am

Nice work on that site! Sure beats my effort...

Tjerk, 9ZZ

31st Aug 2014, 8:14 pm	#21
Maarten Dekatron Join Date: Dec 2007 Location: Haarlem, Netherlands Posts: 4,204	Re: Philips TX500U Fixing N.B. Verstemmen door 1500 pF + 470 ohm tussen top kring en chassis te verbinden. N.B. Detune by connecting 1500pF + 470 ohm from the top of the circuit to the chassis.

10th Sep 2014, 3:48 pm	#22
Roland Huisman Tetrode Join Date: Jul 2009 Location: Zwolle (Netherlands) Posts: 74	Re: Philips TX500U Fixing Nice find that 21KX100A ! That is the third K4 I know of which has left the Netherlands for about a year! They are quite rare as it was only a set for tests. There are serial numbers know which indicate that there were at least 400 sets made. I have one myself too. You can find it on: http://technischmuseum.nl (Sorry the text is Dutch only at the moment. English will come later) Regards and enjoy your TX500 too!

11th Sep 2014, 7:12 am	#23
PE9ZZ_JO22KI Pentode Join Date: May 2014 Location: Amsterdam, Netherlands Posts: 202	Re: Philips TX500U Fixing Nice work on that site! Sure beats my effort... Tjerk, 9ZZ