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

IF Can Capacitor value (SMD)
#1

Hey guy's I have a Admiral 5R11 with a 5R1 chassis the print is here.

http://www.nostalgiaair.org/pagesbymodel...000103.pdf

It had SMD so I have disassembled and removed the mica and trimmed the paddled so they don't touch.
 the original cans have been replaced ( probably smd), the resistance of the new cans is the same at 24 ohms per coil 455kc

There is silver mica disease so my problem is this. What value for the caps? The print shows nothing, is there any way to ball park the PF value or do I just start subbing values, if so what is a starting point 130pf? 

Thanks Eric
#2

Hey Eric, start by lightly tacking in 100pf caps on both transformers. Then try your radio and see if you can get it to peak out and receive. If 100 pf doesnt work, go up to 110, then 120, then 130pf. Just lightly tack the leads to the transformer terminals so you can remove them to try a different value. I've read that restorers are using 100pf caps in the IF cans, but 100pf doesn't work al the time. I recently restored a Philco 53 - 564 and 100pf caps worked on the first IF transformer,  but I ended up using 120pf in the second IF transformer.  Just experiment and you will get it. Just take your time.




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
6TPZ and 5TPO Radio Help
Welcome to the Phorum, R3Sons! I have very limited experience with car radios other than installing custom radios back ...GarySP — 01:08 PM
462ron
OK, I need to rename this thread to say..Eico 368 TV/FM Sweep Generator instead of the current title..Heathkit Sweep Gen...462ron — 12:49 PM
6TPZ and 5TPO Radio Help
Hello, I have a Philco (Ford) 6TPZ and a 5TPO radio.  I replaced the electrolytic capacitors in both.  I have the SAMS m...R3Sons — 12:29 PM
The list of my radio & TV collection!
Hello Peter, Thank you for posting that !! Sincerely Richardradiorich — 09:40 AM
Eico 232 VTVM Schematic
It's a microwave antenna. ?;-p?. I substituted 1N4002s off the 6.3 vac winding for the 1.5 volt battery. Uniprobe is the...RodB — 05:50 PM
Eico 232 VTVM Schematic
Try BAMA for a schematic. Looks like a replacement power source for the D battery has been installed. The tube may be...Chas — 04:51 PM
Eico 232 VTVM Schematic
Is that a battery holder?morzh — 04:43 PM
Eico 232 VTVM Schematic
A friend gave me this Eico 232 VTVM and I'm having trouble locating the schematic for it. This one seems to be a later v...RodB — 04:17 PM
Var resistor id
Considering what it is in series with, I doubt there should be any power requirements. Of course, we should know wher...morzh — 03:23 PM
Var resistor id
Trim pot, about 1/2 watt part of focus divider. As stated 2k ohms. This appears to be a rusty chassis, resolder all ...Chas — 03:19 PM

[-]
Who's Online
There are currently 4458 online users. [Complete List]
» 1 Member(s) | 4457 Guest(s)
Avatar

>