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philco

 the people's set model 444

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Philco 444

 

 

Internal view of restored set

 One of a series of so-called "People's Sets", a term generally assumed to have been used because of the supposed similarity between the Bakelite cabinet versions of the set and the rear window of the Volkswagen (People's car). The release date of the 444: 1936. The chassis is a three valve ‘short’ superhet with only one tuned IF stage and an output valve doubling as detector and AVC. The mixer is of the self-oscillating type and IF trimming is by compression capacitors. AC mains, full-wave valve rectification. ME loudspeaker. Two waveband, no tone control. Bakelite cabinet.

Brief restoration summary

Cabinet sound but dull and dirty. Grille cloth damaged, badly soiled and rotting. No rear cover. Little rust on chassis metalwork, but very dirty, encrusted with a greasy layer. At some time, additional loudspeaker leads fitted, not very expertly. Pointer on dial in wrong place, rendering it invisible in use. The two halves of the tuning gang capacitor have been wired together. The knobs are on the wrong spindles. Illumination of dial seems weak. The tuning gang and dial assembly is loose. Main smoothing capacitor, which should be visible above chassis, is missing. One of the special chassis securing bolts missing. These points are indications that the set has been ‘got at’.

Valves tested:

 PENDD61 output valve: Almost 100% output on pentode section. Both diode sections OK.

80 rectifier: Although output was satisfactory on both anodes, some worrying ‘flicking’ of the tester meter needle indicates a problem.

78E I.F.amplifier: Low emission.

6A7 mixer/oscillator: Low emission.  

Accordingly, new valves fitted were Mixer/oscillator, I.F. amplifier and rectifier. Output valve was useable.

Under-chassis examination and work.  

Volume control dismantled, cleaned and reassembled. Wavechange switch cleaned. Valveholders cleaned.

The incorrect double reservoir and smoothing cap that someone had fitted by hanging dangerously in the wiring beneath the chassis was removed and a correct metal tubular replacement capacitor fitted to original clip. New mains lead fitted, using a new grommet and a restraining clip. New mains plug fitted.

Replaced components include C8 (HT RF bypass), C11 (LF coupling), C5 (V1, V2 screen bypass), C12 (V3 pentode cathode-grid decoupling), R6 and R8 ( AVC coupling resistors). Replacement rubber washers bonded to screw plates in chassis corners. General clean-up.

Realignment.

Full realignment of RF and IF stages was carried out. An Advance signal generator was the signal source via a dummy aerial and output was measured using an Avo model 8 as an output meter.

Above chassis work.

Chassis metalwork degreased and cleaned. Valve screening cans cleaned. Valvecap connecting leads replaced/repaired. Faulty linked tuning gang wiring returned to originality. Tuning gang and dial dismantled and cleaned. New rubber bushes on reassembly. New dial lamp and wiring. Loudspeaker removed and damaged cone repaired. New fabric fitted to board. Knobs and cabinet degreased and polished.

Replacement back made from painted greyboard and fitted using 6BA bolts after repairs to the threads of the mounting holes.

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