Philips B6X72A Repair and Restoration Part 3

[@pd1rwk825]

You've tot a nice channel. Enjoy watching your struggling with the old Phillips. It site is a niffty thing.

[@Donno308]

Hope you enjoyed your day at the beach and didn’t get too sunburned! I would consider 28 degrees to be the perfect mild spring afternoon! Good luck with that bloody Philips! Have you tried using a tiny jeweller’s flat screwdriver to bend in the contacts so they make better contact? Taking the FM module apart would indeed be “character building” but if you work slowly and carefully I have no doubt it will be ok. Congratulations for thinking “outside the box” with the output stage of the first radio. A radio that works is always better than me that doesn’t in my view. No doubt you will lie awake at night wondering what the fault was though. Cheers Rod. Looking forward to your next one!

[@DERB_Seymour_Indiana]

Hey Rod. I think your fix to the first radio was perfectly acceptable. I know there are a lot of purists out there that would cringe at the notion of a fix like that. Sorry to hear about your slight accident and glad all is mostly well. As to the Philips radio, nice fix on the tuner shaft/pointer situation. Very clever indeed. The FM problem sounds exactly as you stated, an intermittent connection. Just need to figure out what is the primary culprit. :) Hope you had fun at the beach.

[@radio-ged4626]

Hi Rod, I haven't checked the circuit diagram for this radio so I could be totally wrong with this suggestion. Have you checked to see if there is any D.C. voltage on the volume control? Usually the design is such that D.C. is blocked from the volume control, but not always. That can cause the scratchy sound when you adjust the volume. As I say this could be total rubbish in your case😀. Edit: Any way it sounds like you've got your hands full with the FM valve base problem for now. Good luck with stripping down that FM module if that's the way you're going to go. I really wouldn't fancy doing that at all.

[@rodsradios]

Hi Radio-Ged, I checked your tip for D.C. on the vol control but no luck, just a worn track I'm afraid.

[@radio-ged4626]

@@rodsradios Thanks for the feedback.

[@alainblazit9504]

Replacing the audio stage with a transistorized or integrated one should provides you a much lower distorsion. How did you made the power supply for this stage?

[@rodsradios]

An feed taken from the heater winding on the added transformer (6.3 Volts a.c.) rectified with a 1N4007 diode and smoothed with a 1000uF capacitor giving about 9 volts d.c. to supply the amp module.

[@ry491]

Typical Philips. Lovely looking radios and sound good when working well but always a nightmare . I don't bother with them now . Somehow they always seem to have an obscure fault and never easy to work on .