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-   -   Philco 41-285 wiring issue (http://www.videokarma.org/showthread.php?t=246271)

Mick AV-8 10-24-2009 06:25 PM

ITS ALIVE>>>ITS ALIVE>>ITS ALIVE>>>
Well took the great advices and replace the electrolytics, kept the diode, lit the tube, and cleaned all the pin conntections. Its working pretty good right now.
Also messed around with the way the wires to the antenna are hooked and this is what I have right now. from left to right looking forward from the back of the chassis... screw 1 "S",screw 2 "A", screw 3 "nothing hooked", screw 4 "G".
Not sure if this is correct.. but so far it has the best reception.. can not pick up any shirt wave..but I am in the cellar work shop..maybe when I put it upstairs ground level it will be better.
I also noticed that the antenna in standing position close to the chassis makes a big difference in reception..must have something to do with field.
This Philco deffinetly lacks the strong sound and punch that I get out of my 10-tube 10S464 Zenith. I listen to the Zenith almost every day. Works with help from the nice people found at this web site.
Still working to see if I can get some puch out of the speakers on this Philco.
Only has one simple knob for trebble/bass though.
Zenith has an array of sellectors.

jeyurkon 10-24-2009 07:51 PM

Congratulations!

However, the antenna connection doesn't seem quite right. The schematic is a bit hard to read because of the resolution. It looks like the first terminal is the one that shouldn't be connected in as much as it goes to the speaker. It looks like it's there in case you want an external speaker. You can trace that easily enough to see which terminal goes goes to the speaker.
The A, G, S labels, are they on the antenna leads or the chassis terminal? It sounds like they're on the antenna if I understand you correctly. In that case I think you should have G going to 3, and A to 2 and S to 4, or A to 4 and S to 2. You might have to try both configurations of A and S to see which is correct.

John

Mick AV-8 10-27-2009 11:44 AM

Followed your antenna suggestions and it works better now.A2,G3,S4.
Can you spray the electronics solvent cleaner into the volume control unit?
I can not seem to get high volume out of the Philico..my Zenith really packs a punch.
Wondering what things I can look at to help increase the volume output.

jr_tech 10-27-2009 01:03 PM

A little solvent contact cleaner might improve the volume control... is it scratchy sounding?

Another experiment that you might try is to hook an external speaker between pin 1 (speaker) and pin 3 (ground) of the antenna terminal ... if it is much louder than the one in the cabinet, it could indicate a problem with the old speaker.

jr

Mick AV-8 10-30-2009 09:55 PM

Since I do not have a tube tester, I pluged in the radio and shut off the light.
I can see all the tubes do have a glow. So even though that is true..could one of the tubes be a problem in not getting a loud volume?
The volume control works but all the way up it is not even half of what my Zenith puts out.
Just wondering if there is a certain tube to look at.:scratch2:

jeyurkon 10-30-2009 11:20 PM

Could be. Could be alignment. Could be a number of things. I may have asked this before, but what part of the country are you located in?

John


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