Duncan2, I assume very small value capacitors of the elements you are
referring to the ceramic caps on those boards. Ceramic caps in those
tuning boards have their role, as discussed.
The electrolytics should be the wear out items replaceable in the receiver, yes?
When I get to those boards I'll give a good once over before changing them.
Do we really think the Elna designed and expected these caps to last 50 Years?
Down the road I'm more concerned with the power transformer enamel starting to deteriorate and causing issues.
I won't even mention upgrading the bridge rectifier to a modern
discreet soft recovery diode version one.
Any ideas for one that comes ready made?
Maybe from Diodes Inc or a modern hexfred version.
I'll quit while I'm ahead.
Cheers,
Elna is a Japanese company USA radio communications of WW2 vintage wouldn't be using their capacitors .
I have several Hallicrafters communications receivers -- SX28 etc the small value capacitors still function okay and I have late 20,s -30,s UK tube radios with all the polystyrene /ceramic etc capacitors still okay .
None of the ones I pulled are faulty , maybe look old fashioned and basic looking but still test okay .
I even have UK tube radios of the late 20,s mains transformers with string holding the paper insulation together and looking like somebody wound it in a garden shed .
Nowadays its "brainwashed " into society that if its a few years old it must be replaced way back in earlier days tube radios cost a few weeks wages and the public expected them to last a long time .
I have a 1920,s semi-variable trimmer capacitor in light brown with black speckles in Bakelite several inches long as well as 20,s RF coils still in their boxes and a large collection of variable capacitors used for tuning a waveband all still working okay and a Varley WW resistor the size of a small tube and looking like a tube with chrome ends in a Bakelite case .
Yet buy a "smart TV " and a few years later you lose all the apps and have to buy a smart-box --do you see what I am getting at ?
I have several Hallicrafters communications receivers -- SX28 etc the small value capacitors still function okay and I have late 20,s -30,s UK tube radios with all the polystyrene /ceramic etc capacitors still okay .
None of the ones I pulled are faulty , maybe look old fashioned and basic looking but still test okay .
I even have UK tube radios of the late 20,s mains transformers with string holding the paper insulation together and looking like somebody wound it in a garden shed .
Nowadays its "brainwashed " into society that if its a few years old it must be replaced way back in earlier days tube radios cost a few weeks wages and the public expected them to last a long time .
I have a 1920,s semi-variable trimmer capacitor in light brown with black speckles in Bakelite several inches long as well as 20,s RF coils still in their boxes and a large collection of variable capacitors used for tuning a waveband all still working okay and a Varley WW resistor the size of a small tube and looking like a tube with chrome ends in a Bakelite case .
Yet buy a "smart TV " and a few years later you lose all the apps and have to buy a smart-box --do you see what I am getting at ?