The Philips L3Z90T was manufactured by Philips Electrical Industries of N.Z. Ltd in 1961.

7-transistor battery portable

1961 Philips L3Z90T

Technical Information

Valves (7 transistors, 1 diode): OC44, OC45, OC45, OA79 Diode, OC71, OC71, ( OC72, OC72 Output Pair)

Intermediate Frequency: 455kc/s and 454kc/s (3rd IF)

Frequency Bands: 1

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

Download Full Service information (Philips_NZ_model_L3Z90T_7-Transistor_Portable_Personic.pdf) here

Note: this set has two different IF frequencies

1961 Philips L3Z90T


1961 Philips L3Z90T

1961 Philips L3Z90T

1961 Philips L3Z90T

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.