How to Fix a Classic American AM Tabletop Tube Radio 1. Steps with PicturesNext step, turn it over Find a way to support your radio while its upside down so as not to stress or damage any parts and lets dig inWatch free 600 Free Live TV Channels. See 45000 Complimentary movies TV shows and documentaries. Record Local TV zero cost. View Horror Movies at no chargeUnderneath youll find a multitude of obsolete parts. Some are easy to read, some are not. First well worry about looking for physical damage. WWI-re.png/1200px-WWI-re.png' alt='Watch I Am Potential Tube Free' title='Watch I Am Potential Tube Free' />Were looking for burnt or overheated parts. Charred stuff is bad. If you find any charred parts its pretty much game over. Youll need to get a schematic for your radio to figure out what burned. A good source for free radio schematics on the web is nostalgia air. Look Ma No circuit board Most tube radios where built by hand and used point to point wiring. Summaries of and commentary on neurology medical journal articles covering topics such as Alzheimers disease, epilepsy, multiple sclerosis. This video demonstrates nasogastric tube insertion and considers indications, contraindications, and potential complications. Back in the day somebody always knew somebody else that could fix minor things on radios and thats what Im going to cover here. In this instructable Im going to. While you are in there do not poke and prod. Old wiring becomes brittle. Unnecessary poking and prodding will result in unnecessary loss of insulation resulting in necessary replacing of more stuff The good thing is that if you dont move it, it wont flake off and the wire will retain the shape it has taken. If you feel uncomfortable with the brittle stuff you can replace it but be very careful to route things back where they were and connect them back to the same exact spots. Youll need a good soldering iron for this. Little 1. 5 watt irons wont work. While on the topic of wiring, lets talk about power cords. If the power cord is brittle, dry rotted, or is cloth, replace it with a new 2 wire cord. When you remove the old cord strip some of it and make sure its a plain old copper lamp cord. If it looks like some kind of spiral wound silver colored stuff it may be resistance cord. Resistance cord was used in early AA5s to drop some of the voltage feeding the radio. The stuff is hard to get. There are workarounds but they are beyond the scope of this instructable. Twisted Season Finale Gunshot on this page. Doing away with the resistance cord and just wiring in regular cord will result in a very short lifespan for your tubes Back to working under the chassis If your radio is mostly or all original the first thing that may stand out as that dont look right are the wax paper capacitors. Buffy The Vampire Slayer Episodes Season 5. They get a dusty, dirty look to them and sometimes blow their innards out the ends. All wax capacitors should be replaced regardless of how new they look. If they havent already, they will fail. Wax capacitors look like little paper cylinders that have been dipped in wax. They are usually rated somewhere between 0. These must ALL be replaced. Watch The Adventures Of Huck Finn Online'>Watch The Adventures Of Huck Finn Online. They are what is commonly used to couple the different section of the radios circuitry together. Along with the wax caps, the next item that must be replaced is the electrolytic filter cap or caps. Here you are looking for a large cylinder that can be made of metal or metal encased in cardboard. The value will usually be somewhere around 2. These are very important as they are what filters the DC voltage that runs the radio. Bad filter caps will result in loud hum or even damage to the radio. Back to the note pad Get your notepad out and make an inventory of all the wax and electrolytic caps you will need to get. Write down the values mfd and voltages. While reading the caps be very careful to cause as little disturbance to adjacent components as possible. Any wire you move may lose its insulation. A set of long nose thin needle nose pliers are excellent for this task. Feel free to grab the body of the capacitor and carefully turn it to facilitate reading its values. If the wax is too dirty to read the value on the cap just use a small flathead screwdriver to scrape away the exposed wax layer. I strongly advise against cutting out caps in order to read them. One can very easily forget where they went and end up causing more damage.