MULLARD MODEL 402 (1952)

The Mullard model 402 was manufactured for C. & A. Odlin Ltd by Philips Electrical Industries of N.Z. Ltd in 1952.

Other radios based on the same chassis:

4-valve broadcast band mantle radio

Same as a Philips BZ126A


To remove the dial, simply pop the chrome buttons off then it lifts out (or, not realising this you might do as the author did and drill them out from behind, ruining the attachment system 😲)

Technical Information

Valves (4): ECH42, EAF42, EL41, EZ40

Intermediate Frequency: 455 Kc/s

Frequency Bands: 1

Chassis Notes(most schematics can be clicked to download a full size version)

Full service information (Philips_BZ126A_Mullard_402-_4V_BC_AC_-_1952.pdf) here

Cathode-biased output valve version:

1952 Philips BZ126A

Back-biased output valve version:

1952 Philips BZ126A

1952 Philips BZ126A

1952 Philips BZ126A

General Construction Notes for Philips Electrical Industries of N.Z. Ltd:

Model codes are explained on the Philips brand page.  Philips early-mid century were probably the Google of their time - they had branches in many countries and a global brand that everyone knew - and were apparently happy to let engineers come up with new ideas and implement them.  Construction is often overly complex but very well engineered - although repairs can also take a complex path.  They used time-in-motion studies to find the most cost effective way to asemble sets and sometimes this means repairs can be nightmarish (if you've ever worked on a V7A Theaterette this will be all too aparent).  U suffix model numbers are transformerless (hot chassis) sets and great care should be taken, or the sets avoided altogether.

Other documented models using this chassis (2 in total)

1952 Philips BZ126A