05-31-2017, 07:47 AM
welcome to the board.
step 1- make double sure you clearly understand what code" number your set is.
step 2- verify the prints here match your layout exactly, if not obtain prints from "the philco work bench".
step 3- spend several hours randomly checking your radio wiring to the prints & perform a visual inspection.
step 4- some component values may start to not match your prints, if yes double check your Code number.
---- within each code number there may be several different versions called "run numbers."
----example i am a 46-1226 code 121. , however within oode 121 there are three models called Run1, Run2, Run3.
----my radio is wired to Run3.
----think of this like car, an 87 thunderbird looks just like an 88 thunderbird. 83-87 Tbirds wired just about identical yet the 88 was different. the 88 is also the very last year of the fox body design making this a one year only deal.
-step 5- using painters tape, make tiny tags on each part and lable the part as C1,, R22, L1, T1 etc.
-make a list of parts you need, assume all resistors , capacitors & Tubes need replaced.
-as a rule to a minimum, assume all capacitors & tubes need replaced
-step 6- build out your parts list and get things on order.,, should be less than 100$ to get tubes, caps and misc stuff.
---- radial capacitors are two wires exiting one end of the can
---- axial capacitors are an "axle", one wire out each end of the can
------determine your capacitor application needs for axial or radial.
------ "target" using all 600v application capacitors
------ "custom" target voltage rating for your filter capacitors
------ dont replace any caps that look like a domino , or any other mica style cap.
-step 7- plan in a polarized 2 prong or retrofit in a 3 prong power chord
-step 8- plan in a retrofit surface mounted inline fuse to the primary side of the input transformer if equiped.
-step 9- start one wire at a time , one part at a time and start replacing / checking stuff. remove all tubes and power up chassis, verify you have voltage on your transformer secondary and take notes on what the values are, then see if this matches your diagram. once you get past this it is just as important to jump directly to the speaker section and determine if you have a bad speaker field coil or ouptput transformer, this will require specail attention and help from others to determine a replacement option.
-step 10- when complete add a tiny dot of white paint to each cap and resistor. in the future when a part fails, the white dot will turn brown giving you a visual aid later was to what area had a fault.
An aticulating desk lamp with magnefying glass built in will become most important many times during repairs so get one in position.
Plan on the radio chassis sitting in one spot for several weeks and stick with the plan to get it running. You will need an area you can control and manage without random pets showing up making a muck of things ,, such as Cats.
Pay attention to some of the purist style restores done here. some people actually restuff the old capacitor cardboard tubes wtih a modern capacitor hidden inside, if this is something you would like to do, plan this in ahead of time by way of what style capacitor you have chosen.
you can use most any higher voltage rated capacitor you want,, the higher the voltage generally the more small the physical size of the capacitor becomes. If you go with modern capacitors, your replacements will generally be 75% smaller than your originals. You will end up with a lot of exra space when you are done.
dont "think" you can clean up the way the interior wiriing looks. If you replace a wire, then make sure the replacement is as close to the same length as the old. The radios were tuned at the end of the assembly line,, an so the tiny difference in the wire length you may introduce could affect your dial scale and where stations appear.
One last thing,, just because it "looks" like a resistor doesnt mean it is. it could be a capacitor. Color coding has not changed for resistors *but* the way in which we determine the value has. In some cases the "body" color of a resistor denotes the first significant digit, then the first stripe is the second significant digit.
In nearly all cases, antique capacitors used the resistor color code as well. There are round resistor looking items in your set that are actually called bumble bee capacitors..... toss those out asap in trade for replacements.
step 1- make double sure you clearly understand what code" number your set is.
step 2- verify the prints here match your layout exactly, if not obtain prints from "the philco work bench".
step 3- spend several hours randomly checking your radio wiring to the prints & perform a visual inspection.
step 4- some component values may start to not match your prints, if yes double check your Code number.
---- within each code number there may be several different versions called "run numbers."
----example i am a 46-1226 code 121. , however within oode 121 there are three models called Run1, Run2, Run3.
----my radio is wired to Run3.
----think of this like car, an 87 thunderbird looks just like an 88 thunderbird. 83-87 Tbirds wired just about identical yet the 88 was different. the 88 is also the very last year of the fox body design making this a one year only deal.
-step 5- using painters tape, make tiny tags on each part and lable the part as C1,, R22, L1, T1 etc.
-make a list of parts you need, assume all resistors , capacitors & Tubes need replaced.
-as a rule to a minimum, assume all capacitors & tubes need replaced
-step 6- build out your parts list and get things on order.,, should be less than 100$ to get tubes, caps and misc stuff.
---- radial capacitors are two wires exiting one end of the can
---- axial capacitors are an "axle", one wire out each end of the can
------determine your capacitor application needs for axial or radial.
------ "target" using all 600v application capacitors
------ "custom" target voltage rating for your filter capacitors
------ dont replace any caps that look like a domino , or any other mica style cap.
-step 7- plan in a polarized 2 prong or retrofit in a 3 prong power chord
-step 8- plan in a retrofit surface mounted inline fuse to the primary side of the input transformer if equiped.
-step 9- start one wire at a time , one part at a time and start replacing / checking stuff. remove all tubes and power up chassis, verify you have voltage on your transformer secondary and take notes on what the values are, then see if this matches your diagram. once you get past this it is just as important to jump directly to the speaker section and determine if you have a bad speaker field coil or ouptput transformer, this will require specail attention and help from others to determine a replacement option.
-step 10- when complete add a tiny dot of white paint to each cap and resistor. in the future when a part fails, the white dot will turn brown giving you a visual aid later was to what area had a fault.
An aticulating desk lamp with magnefying glass built in will become most important many times during repairs so get one in position.
Plan on the radio chassis sitting in one spot for several weeks and stick with the plan to get it running. You will need an area you can control and manage without random pets showing up making a muck of things ,, such as Cats.
Pay attention to some of the purist style restores done here. some people actually restuff the old capacitor cardboard tubes wtih a modern capacitor hidden inside, if this is something you would like to do, plan this in ahead of time by way of what style capacitor you have chosen.
you can use most any higher voltage rated capacitor you want,, the higher the voltage generally the more small the physical size of the capacitor becomes. If you go with modern capacitors, your replacements will generally be 75% smaller than your originals. You will end up with a lot of exra space when you are done.
dont "think" you can clean up the way the interior wiriing looks. If you replace a wire, then make sure the replacement is as close to the same length as the old. The radios were tuned at the end of the assembly line,, an so the tiny difference in the wire length you may introduce could affect your dial scale and where stations appear.
One last thing,, just because it "looks" like a resistor doesnt mean it is. it could be a capacitor. Color coding has not changed for resistors *but* the way in which we determine the value has. In some cases the "body" color of a resistor denotes the first significant digit, then the first stripe is the second significant digit.
In nearly all cases, antique capacitors used the resistor color code as well. There are round resistor looking items in your set that are actually called bumble bee capacitors..... toss those out asap in trade for replacements.
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