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OldTechFan96 · 18th Nov 2017, 7:03 pm

Hello,

Recently I bought a Pye Black Box as a project for over the winter. It is in decent cosmetic condition. The 'Hi Fi' badge is missing the 'F' and unfortunately I could not find it amongst the packaging. The speed selector knob is broken and will need to be glued back together.

So far I have gave the cabinet, amplifier and BSR turntable a good clean.

I'm not too sure which model of BB this is. I can't find any dates inside the cabinet or on any components. The valve lineup is: EL42*2, EZ41, and a ECC8?. I can't make out the markings on the last valve. I've been using Trader Sheet 1360.

I intend to replace all of the paper HUNTS capacitors and the smoothing capacitors. Of the paper capacitors two are 0.0047uf and one is 0.0022uf. My local component shop does not stock these values. Would it be all right to use 0.047uf and 0.022uf paper capacitors instead?

Before I replace any capacitors I would like to test the transformers. The mains transformer checks out OK with my DMM against the values on the TS 1360. I'm not sure about the O/P transformer. Should points A to D measure 1600 ohms? Is it measured from the cathode of V2 to the cathode of V3?

Thanks for reading.

18th Nov 2017, 7:03 pm	#1
OldTechFan96 Octode Join Date: Jul 2017 Location: Newcastle Upon Tyne, Tyne & Wear, UK. Posts: 1,178	Pye Black Box Restoration Hello, Recently I bought a Pye Black Box as a project for over the winter. It is in decent cosmetic condition. The 'Hi Fi' badge is missing the 'F' and unfortunately I could not find it amongst the packaging. The speed selector knob is broken and will need to be glued back together. So far I have gave the cabinet, amplifier and BSR turntable a good clean. I'm not too sure which model of BB this is. I can't find any dates inside the cabinet or on any components. The valve lineup is: EL42*2, EZ41, and a ECC8?. I can't make out the markings on the last valve. I've been using Trader Sheet 1360. I intend to replace all of the paper HUNTS capacitors and the smoothing capacitors. Of the paper capacitors two are 0.0047uf and one is 0.0022uf. My local component shop does not stock these values. Would it be all right to use 0.047uf and 0.022uf paper capacitors instead? Before I replace any capacitors I would like to test the transformers. The mains transformer checks out OK with my DMM against the values on the TS 1360. I'm not sure about the O/P transformer. Should points A to D measure 1600 ohms? Is it measured from the cathode of V2 to the cathode of V3? Thanks for reading. Attached Thumbnails