The schematic for the amp as received. I have added a bleed resistor for the HT supply (not shown on this diagram), something that was sorely missing from the original, especially as the HT supply terminates in an exposed pin plug!

 Wiring is finished for the amplifier. The original hole for the power cord now has a jewel in it, back-lit by a LED. The three electrolytic capacitors take the place of both the chassis mounted dual capacitor, and the tag mounted capacitor. 5W wire wound resistors replace the original higher wattage carbon composition resistors and will be a lot less noisy. Metal film resistors have been used in place of the lower wattage carbon composition resistors. The HT fuse is now in a safe fuse holder mounted where the original power switch went.

Above the chassis you can see an insulating sheet has been put over the terminals of the HT filter choke. The HT wiring to the speaker transformer (right) has been heat-shrinked. In the former location of the main filter capacitor is a small die-cast box that contains a modern IEC power socket, switch and fuse combination.