UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - 'Beau Decca 131 projection receiver 1950'

FERNSEH · 22nd Oct 2015, 10:18 am

Hi John,
Those capacitors in the tripler network can be reason for low EHT.
The EY51 diodes are often blameless. Jac has informed me that the capacitors have a value of 2.5nF (2500pF) apiece.
The nearest value I have is 2nF in the form of disc capacitors, these were bought from Sendz Components many years ago. It's unlikely the capacitors could be used inside the transformer can, they are too big.

An external tripler might solve the problem.

DFWB.

22nd Oct 2015, 10:18 am	#33
FERNSEH Dekatron Join Date: Mar 2005 Location: Gateshead, Tyne and Wear, UK. Posts: 7,444	Re: 'Beau Decca 131 projection receiver 1950' Hi John, Those capacitors in the tripler network can be reason for low EHT. The EY51 diodes are often blameless. Jac has informed me that the capacitors have a value of 2.5nF (2500pF) apiece. The nearest value I have is 2nF in the form of disc capacitors, these were bought from Sendz Components many years ago. It's unlikely the capacitors could be used inside the transformer can, they are too big. An external tripler might solve the problem. DFWB.