Philips L6X38T Experiment

Radiotechniek album
Philips L6X38T Experiment foto 1
We are going to restore a demolished Philips L6x38T.
Philips L6X38T Experiment foto 2
This print is green from oxide. Broken and loose print traces. But we're going to fix all this.
Philips L6X38T Experiment foto 3
The chassis once fell and the bottom left is bent.
Philips L6X38T Experiment foto 4
The chassis is otherwise in good condition.
Philips L6X38T Experiment foto 5
After straightening the chassis we fit the front panel.
Philips L6X38T Experiment foto 6
The rear gives a good idea of the chassis of this radio.
Philips L6X38T Experiment foto 7
The top view of the chassis gives a nice idea of how this radio was built.
Philips L6X38T Experiment foto 8
The side view.
Philips L6X38T Experiment foto 9
And of course the push button mechanism is all aligned. The chassis is straight again and everything fits as intended.
Philips L6X38T Experiment foto 10
The switches have now been removed from the PCB. The green corrosion is clearly visible. Some of the trimmers have also been removed for replacement.
Philips L6X38T Experiment foto 11
Here the PCB is almost complete except for the potentiometers. The original Philips potentiometers are very old.
Philips L6X38T Experiment foto 12
The power amplifier also needs some attention.
Philips L6X38T Experiment foto 13
A leg of one of the transformers was broken.
Philips L6X38T Experiment foto 14
Fixed the swivel foot lock.
Philips L6X38T Experiment foto 15
And then the rebuild of the radio can begin.
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First the AM tuning capacitor.
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And of course the tuning string that you always have a huge argument with.
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Dial in front and it looks like a real James Bond radio.
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Amplifier board mounted with part of the wiring.
Philips L6X38T Experiment foto 20
The pcb is now clean and partly restored
Philips L6X38T Experiment foto 21
The top of the pcb looks neat again. This pcb is a pcb from 1965 that has not yet had any modifications.
Philips L6X38T Experiment foto 22
Now also installed the potentiometers. Piher was chosen here because they are simply very good.
Philips L6X38T Experiment foto 23
And this is what the pcb looks like after restoration.
Philips L6X38T Experiment foto 24
And then the first test.....
Philips L6X38T Experiment foto 25
Just listen along. The station is Extram, a local station is received without an antenna.
Philips L6X38T Experiment foto 26
And now I'm playing for antenna, we still receive Extram on the medium wave.
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Installing the wiring to the antenna gives the following result......
Philips L6X38T Experiment foto 28
A wonderful AM radio time for FM.
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Replacing a coil affected by corrosion along the way.
Philips L6X38T Experiment foto 30
The location of the replaced coil is clearly visible on the print.
Philips L6X38T Experiment foto 31
Clean the FM tuner board.
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The closed FM tuner.
Philips L6X38T Experiment foto 33
Put the stuff together and...
Philips L6X38T Experiment foto 34
The construction of the chassis is of course not always easy. The print is very delicate and you have to pay close attention to what you are doing.
Philips L6X38T Experiment foto 35
But all effort is rewarded. If you listen to the FM of this world receiver.
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The mid frequency RF looks as it should.
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The place from where it was measured.
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Measurements at the FM detector.
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Again the place of measurement.
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Measurement of the transmittance curve of the RF Adjustment is clearly necessary.
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The wiring is already starting to make good progress. After some test adjustment, another FM test....
Philips L6X38T Experiment foto 42
While listening, my little friend came and sat next to me. Insanely sweet animal.
Philips L6X38T Experiment foto 43
Switches are of course all broken. but luckily I found something.
Philips L6X38T Experiment foto 44
Switches installed and wiring connected.
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And wow the dial lighting works.
Philips L6X38T Experiment foto 46
Meter and AM antenna mounted.
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And of course the connection panel is also a hassle, but it all works out in the end.
Philips L6X38T Experiment foto 48
And then the chassis is quite complete.
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My little friend.
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Time for adjustment.
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FM Detector transmission curve in slow motion.
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Just the image of the FM detector.
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We've come a long way. Unfortunately I am still looking for the 1965 scale for this radio.
Philips L6X38T Experiment foto 54
And just listen for a moment...