Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

Thread Closed
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

46-350 works too well
#3

The output transformer was bad on my 46-350 also. I got a second one and used the original for parts. Where did you get your replacement?

Just on general principles, could the AVC in your radio be open somewhere if you can't bring station volumes down to reasonable levels? I'm definitely not clear on how the AVC works on this radio, but it looks like the AVC voltage is filtered inside the 2nd IF can. It might be that R302, 22K Ohm, which (I think) is inside that can, is open. If not, there might be other resistors in the AVC circuit that are open.

Philco's number for that can is Z301. I'm pretty sure their intention was for you to replace the whole can instead of replacing components, so they don't show the location of the components inside it in their service package, but both the Philco and Rider schematics show that resistor surrounded by a dotted line along with the If transformer coils and other components.

There is also a 2.2 Mohm resisitor R301. I'm probably missing something, but I don't see you can get your AVC voltage without going through those 2 resistors.

John Honeycutt


Messages In This Thread
46-350 works too well - by billp - 03-12-2013, 04:20 PM
RE: 46-350 works too well - by TA Forbes - 03-13-2013, 12:12 AM
RE: 46-350 works too well - by Raleigh - 03-13-2013, 12:48 AM
RE: 46-350 works too well - by billp - 03-13-2013, 08:05 AM
RE: 46-350 works too well - by BrendaAnnD - 03-13-2013, 08:22 AM
RE: 46-350 works too well - by Raleigh - 03-13-2013, 11:15 AM
RE: 46-350 works too well - by billp - 03-13-2013, 03:52 PM
RE: 46-350 works too well - by billp - 03-15-2013, 05:21 PM
RE: 46-350 works too well - by billp - 03-18-2013, 01:30 PM
RE: 46-350 works too well - by morzh - 03-18-2013, 01:50 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
New member
Hi. I specialize in refurbishing Predictas, but I'm in Chicago. If you can get it to me, I'd be happy to go over it. ...Bob Andersen — 06:43 PM
An attempt to remove the Field Coil from a G speaker
I have 3 G speaker, all with open Field coils. Today I pull one of the shelf and decided to try to remove the FC (spo...morzh — 06:07 PM
Philco 91 Restore Code ??
Thanks Mike. I will check them out.dconant — 05:52 PM
Philco 91 Restore Code ??
There is no such thing as bad Fluke. This said, they are expensive. A Fluke is easily 10x the price of comparable CCC...morzh — 05:45 PM
Philco 91 Restore Code ??
Hello Mike, Yes, I have 3 Fluke meters one being my first Fluke 77 and other being Fluke 87. My third is Fluke clamp -...radiorich — 05:04 PM
Philco 91 Restore Code ??
I knew that Fluke was the Cadillac so with that in mind what Fluke would you recommend I get?dconant — 03:53 PM
Philco 91 Restore Code ??
Yep. 10W is probably enough. Also, if the meter measures Farads, then it should also have that "Delta" button...morzh — 02:38 PM
Philco 91 Restore Code ??
I measured the current through the resistor I am using as a replacement for the speaker field coil and got 40ma. So that...dconant — 02:32 PM
Philco 91 Restore Code ??
No I'm not saying I don't own a DMM. I have a CCC one (Thsinde 18+). I forgot that could read caps. I did purchase a Flu...dconant — 02:28 PM
Philco 91 Restore Code ??
Are you telling me you do not own any decent DMM, that can measure capacitances from a few pF and up? Even todays CCC (C...morzh — 01:44 PM

[-]
Who's Online
There are currently no members online.

>