So now here is this block of metal in your radio it is called a chassis (cha-sea). It was used to mount parts for the radio. Now first things first take off the knobs beware many knobs just pull off but before doing so check for little miniature screws. It’s better to check then breaking off the knobs. Just gently pull off the knobs. Now the chassis screws are almost always under the chassis though rarely they are on the side of the chassis just unscrew the bottom screw(s), now if your chassis is on a slant put your hand on it to keep it from falling out.
So the chassis is out now if the speaker is broken in a little hole grab a piece of paper towel or cloth and some rubber cement (No regular glue or super glue) put the paper towel or cloth over the speaker hole and dab the perimeter of the paper towel or cloth with rubber cement. Now on to the tuning capacitor grab a can of Metal contact cleaner (not for contacts the other kind) and spray it in the side of the top on the tuning capacitor, work it back and forth a few times. If your dial string is broken use heavy duty string (not thread) or anything else or it will break.
My radio doesn't quite work right!
It hums! If you replaced the filter caps, there's a chance you have a weak rectifier tube or a bad audio amp tube.
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It's deaf! Make sure your antenna is ok and wired properly. Try turning the radio. The antenna is directional. If that doesn't solve it you may have a weak tube.
It doesn't play very loud before it sounds fuzzy. You may have a weak audio amp tube. Peek inside the cabinet while the radio is on (remember not to touch any metal so you dont get shocked!) If you have a tube that has a deep violet or deep blue glow inside the glass while it's powered up it may be a worn audio amp tube. Note the position of the tube on the chassis, UNPLUG the radio, get the tube out and look up it's number on the web. If the tube comes up as being an audio amp tube it probably needs replacing . A common audio amp tube on AA5 radios is the 50L6 and the 35L6. They are cheap and easy to get from tube vendors.
I get a raspy buzzing noise between stations. Electric eye lamps (lamps that turn off during the day automatically) have been known to create nasty noise on AM. Check on a known good AM radio to see if you get the same noise. If you do, your culprit is not the radio itself.
Radio sounds good at first then begins to sound distorted as time passes. You may have an out of spec resistor. While the radio is on, peek inside the cabinet being careful not to touch any metal so you don't get shocked. https://heavyjobs.weebly.com/blog/sega-saturn-astal-isolation. Look for a tube who's metal structure inside is glowing orange or red like its gonna melt. Denoiser premiere pro. I'm not referring to the heater filaments as those are supposed to glow orange. If the tube structure itself is glowing from heat you may have a bias problem which is more than likely in the audio amp circuit of the radio. Obviously you can't perform this visual check on all metal tubes. Either way, it's time to get out the schematic and meter.
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Following these same instructions I have resuscitated several old tube radios. The AA5 was built for simplicity thus there isn't much to go wrong and they are forgiving. Once your radio is up and running, enjoy it. Use it every so often. Just like an antique car, its bad to have it sit unused. Fire it up every now and then and show off your work! Prithviraj chauhan full serial download free.
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