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PJL · 23rd Sep 2019, 3:09 pm

From the circuit, it is indeed feedback and is more complex than Philips sets! Do as suggested and if it stops the whistle you could try reversing the secondary connections but you may struggle to get it stable.

23rd Sep 2019, 3:09 pm	#15
PJL Dekatron Join Date: Sep 2005 Location: Seaford, East Sussex, UK. Posts: 5,997	Re: Pye PJ500 blown resistor. From the circuit, it is indeed feedback and is more complex than Philips sets! Do as suggested and if it stops the whistle you could try reversing the secondary connections but you may struggle to get it stable.