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Philco 37-60 Hum, Weak Reception
Ron Ramirez
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Posts: 13,776
Threads: 580
Joined: Sep 2005
City: Ferdinand State, Province, Country: Indiana
#6

02-08-2018, 07:08 AM
No, no, no. Do not install electrolytics with reverse polarity!

I meant that you should check the negative leads to be sure they are installed correctly.

How about a schematic?
http://www.nostalgiaair.org/pagesbymodel...013205.pdf

Notice that electrolytics (20) and (42) have their negative leads connected to chassis ground, but not so with electrolytic (44) - its negative lead is connected to B-, not to chassis ground. If you connected its negative lead to chassis ground, your radio will always hum.

Check (44) and get back with us.
--
Ron Ramirez
Ferdinand IN
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Messages In This Thread
Philco 37-60 Hum, Weak Reception - by bzadel - 02-07-2018, 02:26 PM
RE: Philco 37-60 Hum - by Ron Ramirez - 02-07-2018, 07:04 PM
RE: Philco 37-60 Hum, Weak Reception - by vinzer - 02-07-2018, 11:01 PM
RE: Philco 37-60 Hum, Weak Reception - by bzadel - 02-08-2018, 12:34 AM
RE: Philco 37-60 Hum, Weak Reception - by Ron Ramirez - 02-08-2018, 07:08 AM
RE: Philco 37-60 Hum, Weak Reception - by bzadel - 02-08-2018, 02:20 PM
RE: Philco 37-60 Hum, Weak Reception - by bzadel - 02-08-2018, 02:36 PM
RE: Philco 37-60 Hum, Weak Reception - by bzadel - 02-08-2018, 02:51 PM



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