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Category: Restorations

I just finish a 2-week restoration of 2 Philips BR397A. One from Juvenal and the other from my own collection. Juvenal's set was electricaly in a very good shape but, with a very bad looking and broken cabinet. On the other hand, mine was electricaly in a bad shape and a nice looking cabinet.

To get them back to live, I got a third set to supply parts. Cabinet and knobs went to Juvenal's. Tone control, xfmr, rect socket, a couple of resistors, and a AZ1 tube went to mine.

I replaced electrolytics, some film caps, and power cord. After a very good cleaning, a new cabinet, and knobs, Juvenal's set was looking great and playing with a very rich sound.

Mine gave me some headache. In the same way, I replaced electrolytics, some film caps, tone parts, and a couple of resistors. To my surprise, the xfrmer was 5V rect rather than 4V required by AZ1. Besides, the plate voltage was not enough to run an AZ1. Well, I finished the work with a pair of diodes to do the rectification job. The set works great, but I'll keep searching for an original or even compatible xfrmer.





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Category: Restorations

I've been restoring a Philips model 836A, a TRF and inductive set, from Geraldo Tonon, Brasília. So far, I've replaced all out of specification resistors and capacitors. I still can't get B volt higher than 35 Volts...
Any ideas?

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Category: Restorations

I spent the last 2 weeks restoring this high sensitivity radio set, also from Juvenal a fellow colletor from Brasilia. Chassiss was in a very good cosmetic condition and original parts and components. Cabinet was in a bad shape with some termites work and awful finish. Thanks to Pieter de Kock for technical information. Follow the cabinet restoration work, below. Click image for a large view.

1) Cabinet old finish stripping


2) Cabinet disassemble and stripping almost done.


3)Stripping and 120 grid sanding done.


4) Working termites holes and veneer flaws with wood filler F12, ipe wood.


5) Cabinet after 150, 180, and 220 grid sanding and the begining of french polish work.


6) Cabinet refinished


7)Back view of the restored chassis


8) Front view of chassis


9) Top view of chassis


10)Assembled radio


11) Back view of assembled radio


12) Radio working

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Category: Restorations

I've been working on two Philips models with similar chassis. Model 510A belongs to me and model 525A to a fellow Juvenal. It's been a challenge since both have antenna coil in bad condition. They are working great now that I solved the coil problem with a simple hot gun to melt a little bit the wax and some resoldering. It worked, the clean sound came out great. Philips models 510A, 522A, 523A, 524A e 525A have this same coil, which has 4 sections: 90 and 30 ohms interconnected; and 4,5 and 40 ohms interconnected.



Philips 510A, 1935, Netherlands


Philips 525A, 1935, Netherlands

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Category: News

Three more pictures of dial pointer and knob, with its measures, from RCA model 4X3 are up.

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