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:
[-]
Recent Posts
philcorepairbench.com - shadow-meter
Anyone know of a way to recover these files from the repair bench? Thanks. fenbach — 11:16 PM
Philco model 38 code 121 not receiving signal.
That's true. Of course If I were to get a vtvm I'd probably have to sink money in to it to get it working right. Probabl...Stormlord5500 — 08:44 PM
Philco model 38 code 121 not receiving signal.
A DMM is good enough. One rarely has to measure indictance, but if you do, short of getting a serious LCR meter (I hav...morzh — 07:35 PM
Testing a speaker and output transformer Trutone A2-G
You guy's are right on. I found a broken wire on the speaker plug that I replaced and all is well now. Have better volu...murf — 03:43 PM
Philco model 38 code 121 not receiving signal.
I need to get a vtvm. I think that little component tester is just more accurate. Plus it shows the inductance which is ...Stormlord5500 — 03:07 PM
Philco model 38 code 121 not receiving signal.
I use a pair of Mastercraft brand DMMs from Canadian Tire, from what I read most of those DMMs use the same main chip re...Arran — 02:36 PM
Philco model 38 code 121 not receiving signal.
Thank you sir. Yes I feel good and also relieved because this one's been weighing on me a bit.Stormlord5500 — 11:18 AM
Philco model 38 code 121 not receiving signal.
It feels good don't it? Good luck on the rest.Paul Philco322 — 11:06 AM
Philco model 38 code 121 not receiving signal.
I've reinstalled the coil. Now IT'S ALIVE!!!!!! I fired up my TinySA on signal generator mode and set it to 1400Kc and ...Stormlord5500 — 11:01 AM
Philco model 38 code 121 not receiving signal.
Yes, Walmart, right up there with Fluke.RodB — 11:00 AM

[-]
Who's Online
There are currently 2003 online users. [Complete List]
» 1 Member(s) | 2002 Guest(s)
Avatar

>